710: Portal Pros Goes Toyota: Real Numbers, Real Trails & What’s Coming Next

An integrated bump stop is a suspension contact point built into a bracket or component so the suspension has a controlled “hard stop” near full compression. On off-road setups, it helps protect shocks and linkages from bottoming out when the suspension travels through big bumps.

“Johnny joints” are a brand name commonly used for rebuildable spherical-style suspension joints. They’re designed to handle misalignment and articulation on off-road link suspensions while still being serviceable (you can replace internal wear parts instead of replacing the whole joint).

“Hymes” refers to Heim joints (also called rod ends), which are spherical bearings used in many off-road suspension linkages. They allow smooth movement through angles and articulation, which is helpful when links swing through large arcs on trails.

Aluminum links are suspension arms/links made from aluminum instead of steel. They’re often used in off-road kits to reduce weight while maintaining strength, and the speaker claims these aluminum links are included “standard” on the suspension kits and can also be ordered separately.

The Trail Revival program is referenced as an off-roading community initiative tied to the onX Offroad app. It’s presented as a way the app company participates in trail stewardship and community events.

The Jeep Wrangler is a dedicated 4x4 SUV built for off-road use, with a strong reputation for trail capability and customization. The podcast mentions maintenance on the Rubicon Trail and references an “elite partnership,” which aligns with the Wrangler’s frequent role in off-road events and trail communities. It’s discussed because it’s one of the most common vehicles associated with serious trail driving.

The Ford Ranger is a midsize pickup truck built for work and off-road use, and it’s commonly discussed in 4x4 circles because it’s practical, capable, and widely supported with aftermarket parts. In the podcast context, it sounds like the Ranger is being referenced alongside other “Light Ranger” options, likely in relation to towing or trail setups. It’s a frequent topic because it can be configured for different levels of off-road and utility needs.

The Aston Martin Vanquish is a high-performance grand tourer, meaning it’s built for fast, comfortable long-distance driving rather than hardcore off-roading. In the podcast, it’s mentioned as a possible option (“work with Vanquish, right?”), likely in the context of a vehicle they could use or reference during the discussion. It comes up because it’s a distinctive, performance-focused car that stands out even in a 4x4 off-road setting.

“V eight” refers to a V8 engine, where eight cylinders are arranged in a V shape. In this segment, the speaker isn’t chasing big power numbers; they’re highlighting that the V8’s smoothness and drivability make the car feel pleasant on-road.

NVH stands for Noise, Vibration, and Harshness. The speaker is saying the Lexus has low NVH, meaning it’s very quiet and smooth compared with their Jeeps, which tend to feel louder and more “busy” while driving.

The Jeep Grand Cherokee is a midsize SUV that’s often used for off-road setups, and this speaker specifically references a 1994-era example. They describe it as having “electronic everything” for its time, including dashboard/indicator-style alerts like tail lights out or doors open.

“Electronic everything” here means the vehicle relies heavily on electronic systems for functions and alerts, rather than simple mechanical controls. The speaker then gives examples like a small display that warns about issues such as tail lights being out or doors being open.

“JK” refers to the Jeep Wrangler JK generation, and the speaker contrasts it with their older Grand Cherokee. They describe the JK as “stepping back 10 years” in electronics/features compared with the newer vehicle they’re used to, while also saying it’s better because it’s newer overall.

The speaker is contrasting modern off-road vehicles with older, simpler ones by emphasizing “almost no electronics.” The idea is that fewer electronic systems can mean fewer things to fail on the trail and a more straightforward, mechanical-feeling experience.

“Poverty edition” is a slang term for a stripped-down trim level with fewer convenience features. In this segment, the speaker uses it to explain why they have to manually roll/reach for the window from the passenger side.

The Lexus GX470 is a Toyota-based luxury SUV built around a V8 engine and body-on-frame construction, aimed at off-road comfort. In this segment, the hosts connect it to the “100 series Land Cruiser” platform and explain it’s essentially the GX variant of that era’s Toyota 4Runner/Land Cruiser family.

The Lexus GX460 is the newer-generation GX model compared to the GX470, still built on a Toyota-derived platform with a V8. The hosts discuss how the “460” naming is tied to engine displacement, contrasting it with the older “470” model.

Displacement is the total volume swept by an engine’s cylinders, usually measured in liters (L) or cubic centimeters (cc). In this segment, the hosts say the GX “470” vs “460” naming relates to the engine displacement, which is a quick way to understand which engine family you’re looking at.

The Toyota Land Cruiser is a long-running, body-on-frame SUV built around durability and off-road capability. In off-road circles, it’s especially associated with serious trail builds and a big aftermarket ecosystem, which is why the hosts contrast it with cheaper “shipbox” Toyota builds.

A modular system is designed so key components can be swapped, reused, or adapted across different vehicles. The hosts describe a “modular” portal approach where the same portal box can be adapted quickly to new models using interfaces like adapter plates.

“One ton axles” is shorthand for heavy-duty axle assemblies typically associated with higher payload/towing classes. In off-road builds, people upgrade to heavier axles for strength, but the episode emphasizes that axle swaps don’t automatically translate to a different vehicle or suspension architecture.

IFS stands for independent front suspension, meaning each front wheel can move somewhat independently instead of being tied together by a solid axle. That matters for off-road upgrades because some axle and drivetrain components designed for a solid-axle setup may not fit or work the same way on an IFS platform.

The Toyota GX 470 is a body-on-frame SUV known for off-road capability, and this episode specifically discusses fitting portal gearboxes to it. Portals raise ground clearance by changing how the axle delivers torque to the wheels, which can help with obstacle clearance on trails.

Hollister is referenced as the local off-road area where they took the GX for an early test run after installing the portals. It’s mentioned as the setting for the first real-world off-road driving rather than a technical detail.

A break-in period is the recommended early service interval where new mechanical components are expected to seat and wear in gradually. The speaker’s uncertainty about completing break-in underscores that they were pushing the vehicle off-road very soon after the new setup.

Portals are an off-road drivetrain modification that raises the axle centerline using a reduction gear at the wheel ends. That increases ground clearance and can help with tire clearance and obstacle capability, which is why the hosts talk about delivering “portals” as a product.

The segment calls out used TRD shocks for all four corners, which is a suspension upgrade aimed at restoring control after high mileage. They also later describe these shocks as “IVP 2.5” with piggybacks, indicating a higher-end off-road shock design intended for better heat management and consistent damping.

“IVP 2.5” refers to a specific shock size/valving spec used by the shock manufacturer—here, it’s presented as part of the shock’s performance design. In practice, these kinds of internal volume/valving specs are used to tune how the shock resists compression and rebound, especially under off-road loads.

“Bump stops” are suspension components that limit how far the suspension can compress. “Gen three” implies a specific upgraded generation of bump-stop design, likely tuned for harder impacts and bottoming resistance on off-road rigs.

King of the Hammers is a high-profile off-road race in Johnson Valley, known for extreme rock crawling and brutal suspension/drivetrain testing. Mentioning it signals the rig is being pushed in a competition-level environment.

Johnson Valley is a desert off-road area in California that’s closely associated with King of the Hammers. It’s known for steep climbs, rocky sections, and high-stress conditions for suspension and tires.

Turkey Claw is a named obstacle/section used for off-road testing, where drivers encounter nasty, technical terrain that can force winching and body damage. The mention suggests they’re evaluating how the rig survives real-world abuse.

Rock crawling is slow, controlled driving over rocks and uneven terrain where traction is limited and wheel articulation matters. Drivers use careful throttle and steering to keep tires gripping while the suspension flexes. It’s a common test for how well a drivetrain and suspension setup handles side loads and impacts.

“Whoops” are a series of uneven, rolling bumps in off-road terrain that force the suspension to rapidly compress and rebound. They can unload and reload the tires, pitching the vehicle and stressing components. That’s why they’re relevant to the hosts’ concerns about portal mounting and suspension behavior.

When the hosts say the “airbags popped out,” they’re describing a suspension or off-road air-spring setup that extends under flex or impact. In this context, it’s a sign the suspension is reaching its travel limits or that the system is designed to articulate aggressively. It also indicates the vehicle is being pushed hard enough to trigger safety/fitment behavior.

Rear springs are the suspension springs that support the vehicle’s weight at the back and control ride height and how the rear end reacts over bumps. Removing or running without them shifts the job to the bump stops, changing ride behavior and increasing stress on other suspension components.

Poison Spider is a named off-road trail section used in Jeep/4x4 trail route planning. The speaker groups it with other named obstacles as part of a “trifecta,” implying it’s a recognizable, repeatable route with its own difficulty and line choices.

Gold Bar Rim is a named off-road trail section included in the speaker’s “trifecta” route. Mentioning it by name suggests it’s a known obstacle with a reputation among 4x4 groups, where vehicle setup (like lockers and tire size) matters.

A “lunchbox locker” is an aftermarket differential locker that replaces only the internal carrier parts inside the differential housing, rather than swapping the whole differential. When it’s the “rear” locker, it locks the rear axle so both rear wheels can be forced to turn together for better traction on steep climbs and low-grip obstacles.

Coilovers are off-road suspension components that combine a coil spring and shock absorber into one unit. In lifted 4x4 builds, coilovers help control wheel travel and ride height, which improves traction and stability when running bigger tires over uneven terrain.

“40s, 42s” is shorthand for running 40-inch and 42-inch tires on off-road rigs. Bigger tires increase ground clearance and can roll over obstacles more easily, but they also add weight and can require suspension and gearing changes to drive well.

A “V notch” is a trail obstacle shaped like a V-shaped cut or dip that forces the vehicle to articulate (move its suspension) and manage traction carefully. On steep off-road lines, it can lift one tire and reduce available grip, which is why drivers often plan their throttle and line choice around it.

When a “front right tire” lifts off the ground, the vehicle has lost contact on that corner, so that wheel can’t contribute traction. In off-road terms, this is a common articulation/traction-loss moment that often leads to sliding if the driver doesn’t have enough grip on the remaining tires.

A winch is a powered cable system used to pull a vehicle out of a stuck position or to help it climb an obstacle. In off-road driving, it’s often used when traction is lost (like a lifted tire) or when the line is too steep to self-recover.

An “optional line” on a trail is an alternate route that’s usually easier or more controlled than the main challenge. Drivers choose it to avoid the hardest section while still reaching the same checkpoint or feature.

“Wedgie” appears to be the name of a specific trail feature/obstacle that the group is using as a landmark. In off-road slang, it often refers to a wedge-shaped section that can force a vehicle into a difficult angle where traction and clearance matter.

A “hard right turn” during an obstacle attempt changes the vehicle’s steering angle and weight transfer, which can suddenly alter traction at each tire. On steep, uneven terrain, that kind of abrupt input can cause the vehicle to lurch or rotate as suspension loads shift.

A “double step up” is an off-road obstacle where the trail rises in two stages, forcing the vehicle to climb both front and rear at the same time. It’s challenging because it can reduce traction and articulation when the tires transition over the steps.

“40 inch tires” refers to very large off-road tires with a roughly 40-inch diameter, which increases ground clearance and helps the tire climb over obstacles rather than getting hung up. On a trail, bigger tires also change gearing and require supporting mods (like suspension and axle clearance) to fit and work correctly.

A spacer leveling kit uses spacers to raise one end of the vehicle to level the stance, usually without changing the full suspension geometry the way a true lift kit does. It can improve tire fitment and appearance, but it may not provide the same off-road performance as a suspension lift with proper alignment and travel changes.

A ring gear is the large gear inside a differential/axle that meshes with the pinion gear to multiply torque to the driveshaft and wheels. In off-roading, ring gear size is often used as a proxy for axle strength and how well the drivetrain resists shock loads.

The Jeep Gladiator is a midsize pickup built on Jeep’s off-road platform. Here, the speaker compares its axle hardware—specifically the ring gear size and axle model code “M220”—to other setups, emphasizing how axle strength affects whether you can survive aggressive trail impacts.

Dana is a major axle and drivetrain supplier, and “44s” is shorthand for a Dana 44 axle family. The “44” naming is commonly tied to axle model/gear sizing, and enthusiasts use it to compare strength between different axles for off-road use.

Throttle refers to how much the driver is commanding the engine to deliver power. In off-road situations, staying on or lifting off the throttle at the wrong moment can change traction and shock loading, which can lead to drivetrain damage.

In off-roading, “backup” is the immediate recovery step after a suspected mechanical failure or drivetrain bind. The speaker uses it as a diagnostic clue: if the vehicle can reverse and move, the axle gears likely didn’t catastrophically fail.

The Toyota FJ Cruiser is a compact off-road SUV known for its rugged styling and trail-focused design. The podcast mentions spending “six hours” and seeing a “red FJ cruiser,” which suggests it was part of the group’s off-road day or a notable sight on the trail. It’s discussed because the FJ Cruiser is a recognizable, capable platform for trail driving and maintenance routines.

“Aired up” means increasing tire pressure back up from a lowered off-road setting before driving on-road again. In off-roading, people typically lower pressures for traction and ride comfort, then air them back up when they’re done on the trail.

The “rear diff” is the rear differential, the gear unit that lets the left and right rear wheels rotate at different speeds while also transmitting engine torque to the axle. In off-roading, a damaged differential often needs replacement, and the replacement must match the correct gear ratio (“gearing”) for proper driveline behavior.

“Gearing” here refers to the differential gear ratio, which determines how many driveshaft revolutions correspond to wheel revolutions. Matching the gearing is important so the vehicle’s drivetrain works correctly and doesn’t cause drivability issues or mismatched axle behavior after a diff swap.

“Dropout thirds” describes a differential design where the “third member” (the center section containing the ring and pinion gears) can be removed from the axle housing without pulling the entire axle assembly. This makes diff swaps and repairs faster—useful when you’re trail-side or trying to get back on the road quickly.

“EJS” is a well-known off-road event in Moab (Easter Jeep Safari) that brings vendors and trail-focused builds together. Mentioning “EJS industry” frames the context as a time when people are actively working on rigs and parts.

Moab is a major off-road destination in Utah known for trails where vehicles often need on-the-spot repairs. The hosts connect “being a Moab” with the reality that you may end up working on your rig during the trip.

A “third member” is the removable center section of a differential assembly (often the carrier/gear housing). In many off-road setups, people swap third members to quickly change gear ratios or to replace damaged internals without rebuilding the whole axle on the trail.

“Gears” here refers to the differential ring-and-pinion gear set, which determines the gear ratio. Swapping to different (or used) gear sets changes how the vehicle accelerates and how it behaves at speed—especially important on trails where you want more crawl or better control.

“Cliffhanger” here refers to a specific Moab-area trail or obstacle name used by off-road groups. The host says they drove back out there and “went to Cliffhanger,” then swapped the differential again—implying the trail’s difficulty influenced their setup and timing. In off-road terms, trail names like this often correspond to known lines, rock steps, and traction challenges.

The Lexus GX is a body-on-frame SUV built around a traditional 4x4 layout, and this episode is specifically talking about its rear differential. The hosts mention that the GX used an 8-inch ring gear setup, and later moved to an 8.2-inch version depending on model years.

The Toyota 4Runner is a traditional off-road SUV, and the episode focuses on its rear differential ring gear size. The hosts claim that certain 4Runner model years used an 8-inch setup, then switched to an 8.2-inch differential in 2010.

“8.2” here refers to the ring gear size in the rear differential (the gear set that drives the axle). A larger ring gear is often associated with different strength and gearing characteristics, and the hosts use it to explain what changed across Toyota/Lexus model years.

A factory locker is a differential that can lock both axle shafts together so both wheels turn at the same speed. That improves traction when one wheel loses grip on rocks, mud, or sand—common situations in 4x4 trail driving.

In this context, “8.2s” refers to an 8.2-inch differential setup (ring gear/differential hardware) used in certain Toyota axle configurations. The speaker warns that these can be prone to failure (“blow up”) under heavy loads or aggressive off-road use.

Ring and pinion are the gears inside a differential that transfer engine torque to the axle shafts and set the gear ratio. Changing ring-and-pinion ratios affects how the truck accelerates, cruises, and climbs on trails.

The carrier is the part of the differential that holds the gears (including the side gears and pinion gears) and supports them inside the housing. A “beefier carrier” generally means stronger internal components that can better handle higher torque and shock loads.

“4.9 inch” is being used as a shorthand for a differential/axle gear setup choice (likely referring to a ring-gear size or axle/diff configuration). The speaker is comparing options and leaning toward a specific differential size/configuration for better fit and capability.

A “10 and a half inch tundra axle” refers to a larger Toyota Tundra rear-axle/differential configuration. The speaker is describing a specific swap idea, implying the larger axle/diff can provide more strength and packaging advantages for their build.

In off-roading, clearance is the amount of space between the ground and the lowest parts of the vehicle (like the differential housing). More clearance helps prevent the axle from contacting rocks or ruts during climbs and descents.

An “E locker” refers to an electronically controlled locking differential (a locker) that can lock both axle shafts together. That improves traction when one wheel loses grip, which is especially useful in off-road low-traction situations.

Unsprung weight is the mass not supported by the vehicle’s suspension—typically wheels, tires, brakes, and parts of the axle. More unsprung weight can make the suspension harder to control over bumps, which can reduce ride quality and traction consistency.

The “unit bearing pattern” refers to the bolt pattern and mounting interface of the wheel bearing assembly. It determines whether a given axle/portal setup can physically bolt to the vehicle’s front end and align correctly with the hub and brakes.

A stub shaft is the short axle shaft section in the front that carries the wheel-end components and interfaces with the drivetrain. For portal/axle conversions, the stub shaft must match the input gear and spline count so torque transfers correctly.

The input gear is the gear that receives rotational power from the driveshaft or upstream axle components. In portal setups, the input gear must match the vehicle’s front stub shaft and spline arrangement to ensure proper engagement and gearing.

“Spline” count refers to the number of ridges on a shaft that mate with matching internal splines. A “30 spline” Toyota front setup means the portal/axle conversion must use the correct spline count so the stub shaft and gears engage properly.

The Toyota Tacoma is a mid-size pickup, and the speaker is referencing its second-gen and third-gen years. Tacoma platforms are widely supported in the off-road world, so modular trail parts often get adapted across multiple Tacoma generations.

The Toyota GX470 and GX460 are two different generations of the GX luxury off-road SUV. The speaker is treating them as part of the same “applications” list, which matters because off-road electronics and fitment can vary by generation.

The Toyota Sequoia’s second generation is included in the speaker’s list of platforms that share the same application approach. For off-road accessory development, the key point is that different model lines can still share enough underlying architecture to make a “modular design” work.

The Lexus LX570 is the luxury twin of the Toyota Land Cruiser 200 series, and the speaker groups it with the Land Cruiser for their application work. That matters because electronics and chassis/fitment differences between Toyota and Lexus trims can affect how an off-road accessory installs.

The speaker is referencing the Toyota Tundra’s second generation as part of the same application family as the Land Cruiser 200 series. Generation-to-generation changes can affect mounting points and especially the vehicle’s electronic systems, which is why they’re mapping coverage by era.

In this context, “knuckle” means the steering knuckle—part of the front suspension that connects the steering system to the wheel hub. Because it controls wheel alignment and steering geometry, matching knuckle design is crucial when adapting off-road components across Jeep generations.

ABS (anti-lock braking system) is the vehicle’s braking control technology that prevents wheel lockup during hard braking. The speaker flags ABS as a major risk when adding new applications because modern ABS integration with vehicle computers can be sensitive to wiring, sensors, or calibration changes.

The speaker is referring to how modern vehicles use increasingly complex electronic control units (ECUs) to manage braking, traction, and other systems. As those systems become more integrated and “picky,” aftermarket changes can cause faults or unexpected behavior if they interfere with sensors or modules.

Marlin Crawler is an off-road parts brand known for Toyota-focused suspension and rock-crawling kits. In this segment, the guest references Marlin Crawler’s RCLT kit as a common baseline people compare against when building a capable Toyota. That implies it’s widely used as a starting point for ground clearance and big-tire rock-crawling geometry.

A “one ton swap” means replacing the truck’s axles (and often related components) with heavier-duty axles from a one-ton class vehicle. The goal is stronger driveline components that can handle larger tires, higher loads, and off-road abuse. In this segment, it’s part of a “mild build” strategy compared to upgrading existing axles.

Accutune is an off-road suspension brand referenced here for a lift kit selection. The guest says they picked an Accutune lift kit for a “traditional” non-portal Toyota build running 33s or 35s. That frames Accutune as part of the mainstream suspension-building options for capable-but-not-extreme setups.

Fox refers to Fox Racing Shox, a suspension shock manufacturer commonly used in off-road builds. The “2.2” and “2.5” numbers are shock body sizes (diameter), which generally correlate with different valving and capacity for heavier loads and longer-travel setups. The guest is describing shock sizing choices for the lift kit build.

Regearing means changing the differential gear ratios so the vehicle’s gearing better matches its new use. In off-roading, it’s often done after adding larger tires or lift components to restore drivability and improve crawl/low-speed control.

RCB axle shafts are aftermarket drivetrain components used to replace the factory half-shafts. They’re typically chosen for stronger materials and better durability when a lifted 4x4 runs harder, especially with larger tires and more torque.

Chromoly (chromium-molybdenum steel) axle shafts are made from a high-strength steel alloy. The idea is improved strength and toughness compared with many stock shafts, which can help when you’re stressing the drivetrain off-road.

An axle truss is a rigid cross-bracing structure that ties together parts of the axle housing. It’s used to reduce axle flex and help maintain alignment under heavy off-road impacts, improving durability and handling consistency.

A lift kit raises a 4x4’s ride height by changing suspension components like springs/coilovers and related geometry. Off-road builders use lift kits to clear larger tires and improve approach/departure angles, but they often trigger additional drivetrain work like regearing and axle upgrades.

“IFS clamshell” refers to a lift-kit approach for independent front suspension (IFS) vehicles that uses clamshell-style brackets/plates to modify the front suspension mounting area. These kits can be more labor-intensive because they involve more disassembly and careful alignment.

“Axle trust” appears to be a transcription error for “axle truss,” which is a bracing piece that stiffens the axle housing. In this context, it’s part of the portal/knuckle-gusset build plan to reduce flex under off-road loads.

“35” is shorthand for tire size (commonly 35-inch tires) used in off-road communities. The hosts discuss how running 35s may require additional work and how portals can help with fitting even larger tires. The key idea is that tire diameter affects clearance, suspension geometry, and fitment.

“Mid travel” refers to a suspension travel level that’s between stock and full long-travel builds. In this segment, the hosts use it to describe how portal axles can yield flex and usable suspension movement, but not necessarily the same outcome as a dedicated long-travel kit. The key point is that control arms effectively get longer, improving articulation at slower speeds.

“37s, 38s” refers to stepping up to larger tire sizes (37-inch and 38-inch tires). The hosts claim that with portals you can go to those sizes with “not too much work” because you have enough room and clearance. This is about how axle/clearance changes enable bigger tires for rock crawling.

Control arms are suspension links that locate the wheel and allow it to move while maintaining alignment. In this segment, they’re being adjusted to set camber and to manage tire/body clearance near the CAD mount.

Camber is the angle of the wheel relative to vertical when viewed from the front or rear. Adjusting camber helps keep tire contact patch shape correct and can also influence clearance issues when suspension geometry changes.

Scrubber radius is the horizontal distance between where the tire’s contact patch effectively meets the steering axis. Changing wheel offset and steering geometry can increase or decrease steering effort and how the truck responds over bumps; the hosts argue that portal setups aren’t automatically “terrible” because of scrub radius.

Wheel offset is the distance between the wheel’s mounting surface and its centerline. Positive offset (like the “plus 25 millimeter offset” mentioned) changes how far the tire sits inboard/outboard, which directly affects clearance and scrub radius when you change wheel position.

Mechanical trail is a steering-geometry measurement related to how the wheel’s contact patch sits relative to the steering axis (often described using the ball joints and where their line intersects the ground). Increasing mechanical trail generally makes the vehicle track straighter and feel more stable, because the steering self-centers more strongly.

Caster angle is the fore-aft tilt of the steering axis (top of the axis leaning back relative to the bottom). More positive caster typically increases mechanical trail and improves straight-line stability, but too little caster can make a vehicle feel like it needs constant steering input.

A wheel spacer is a thickness added between the wheel and hub to push the wheel outward. That increases clearance to the suspension/body in some setups, but it can also change steering geometry and stress components, so it’s usually paired with correct wheel offset and alignment.

Scrub radius is the distance on the ground between where the tire’s contact patch sits and where the steering axis would intersect the road. Changing wheel offset, spacers, and portal/lift geometry can increase or decrease scrub radius, which affects steering feel and how easily tires clear the body.

The lower control arm is part of the suspension that locates the wheel and controls its movement through bumps and turns. Adjusting it (or related alignment points) can shift the wheel’s position, which changes where the tire contacts the body at full lock.

“Portal” gearboxes (often called portal axles) raise the axle centerline by using a reduction at the wheel ends. That increases ground clearance and can help with low-speed torque, but it changes driveline geometry and can affect what axle shafts, gears, and driveshafts you need when building for very large tires.

RCLT is being used here as a specific long-travel kit option (the “lift kit” cost is broken out by kit parts). The key point is that the kit price has dropped significantly, and the discussion is about budgeting the total build cost once you add shocks and other required components.

RAVflow shocks are the shock absorbers being priced as part of the extreme long-travel build. In these setups, shock choice matters because the shocks must match the increased suspension travel and the off-road damping needs, otherwise the ride can feel harsh or control can suffer.

The Aki tunes rear suspension kit is another rear-end suspension option used in the cost comparison. The episode treats it as a complete parts package for the rear, which is important because long-travel builds often require rear-specific geometry and components to work correctly with large tires and axle changes.

RCVs here refers to RCV-brand axle components (typically constant-velocity joints/axle shafts) used to handle the stresses of off-road driving and suspension lift. The discussion ties them to the cost of upgrading the front axle when doing an extreme long-travel build.

The rear axle is the drivetrain assembly that carries the rear wheels and houses the differential/gears. In long-travel builds, changing the rear axle (or its gearing and shafts) can be necessary because lifting the suspension and running larger tires changes angles, clearances, and how the driveline components fit and operate.

Dana 60 refers to a specific heavy-duty axle model used on many off-road trucks. In this segment, they’re talking about gear and axle upgrades for a Dana 60 setup to handle very large tires (38s/40s), and they mention a “drop in” approach that keeps the build more cost-effective.

A full-float axle design separates wheel load from the axle shaft, with the hub supported by bearings in the axle housing. The host connects this to the portal conversion process, explaining spline-count changes when moving from a full-float setup to the portal and stock differential side.

“Spline” count refers to the number of teeth on a shaft that engage with a matching gear or hub. Higher spline counts can indicate a stronger or more robust connection, and here the host is describing how the portal conversion uses a 35-spline interface.

“Diff” is short for differential, the gear assembly that allows the wheels to rotate at different speeds while turning. The host notes that the portal conversion must match the stock differential’s input side (including spline count) to work properly.

ARB refers to an aftermarket off-road brand known for lockers and air-actuated differential upgrades. Here, the host mentions upgrading to a 35-spline ARB, implying a stronger or more capable differential/locker setup that matches the portal conversion’s spline requirements.

In a 4x4, the transfer case splits engine power to the front and rear axles and often provides low-range gearing for crawling. When someone says “hopefully it’s not between your transfer cases,” they’re warning about where a drivetrain modification or component change would land in the powertrain layout.

Gussets are triangular reinforcing plates welded or bolted onto structural parts to reduce flex and spread loads. In a drivetrain/suspension upgrade, adding gussets is a common way to strengthen brackets or mounting points against off-road impacts.

Gear reduction is the ratio change that multiplies torque at the wheels while reducing output speed. With portal axles, the added reduction helps with low-speed control and climbing because the drivetrain effectively “gears down” at the wheel ends.

A floor jack is a hydraulic lifting tool used to raise a vehicle for work like axle installs. The segment notes that if you don’t have one, the cost of tools can be higher, which ties into how accessible the portal install is for driveway wrenching.

Jack stands are safety supports placed under the vehicle so it remains stable while you work. The hosts mention having jack stands (and a floor jack) and doing the job with help in a weekend, emphasizing practical installability.

“Airbag suspension” means a suspension system that uses air springs (bags) instead of steel coil springs. In this context, they’re saying you may blow out the air suspension components before you even need to service the portal axles on the trail.

The Rubicon Trail is a famous off-road route in California’s Sierra Nevada, known for technical obstacles and sustained rock crawling. Mentioning it signals the hosts want to test portal installs in a real, high-stress environment where breakdowns and trail repairs are common.

“Super Duty” refers to Ford’s heavy-duty truck line, built for towing and off-road durability. In this segment, they’re discussing a Super Duty “version” of their portal-axle setup and how tire size and axle choices affect warranty coverage and customer expectations.

“14 bolt” refers to a GM full-size truck axle family (so named for the number of bolts on the differential cover). It’s a common upgrade target in off-road builds because it’s robust and has a large aftermarket ecosystem.

“Stickies” is off-road slang for sticky, high-traction tires—often soft-compound rock-crawling tires. Going from 40-inch to 43-inch tires increases leverage and load on axles, bearings, and drivetrain, which is why the hosts connect it to warranty risk.

A “taller lift” means increasing suspension height using lift kits, which raises the chassis relative to the axles. That can improve clearance for bigger tires and obstacles, but it also changes driveline angles and stresses components—part of why warranty and axle choice matter.

A “deeper ratio” means lower numerical axle gearing (more torque multiplication) so the truck crawls slower and pulls harder at low speeds. Portal setups and taller lifts often change how the vehicle behaves off-road, so gearing becomes part of the fitment decision.

“Junk art axles” appears to be a slang/derogatory phrase for cheaper axle options or less-expensive axle builds. The point in context is that some people choose budget axles to save money, then may still spend large amounts later—raising questions about whether a premium portal/axle solution will sell.