TRX-Series Truck Guide

Find the Perfect Traxxas Trail Truck for Your Outdoor Adventures

Traxxas 1/10 scale TRX^®-series trucks are the most versatile, capable, and popular trucks in the wild. There’s a TRX for every taste and budget from the lightweight, trail-focused TRX-4 Sport to the six-wheel traction of the Mercedes-Benz^® G 63^® AMG 6X6. TRX-4s are available as Ready-To-Run^® models or as fun and rewarding assembly kits. High Trail Edition^™ TRX-4s come outfitted for extreme off-road fun with pre-installed lift kits, huge 2.2″ tires, and highly detailed bodies. This article will cover the features and specs shared by 1/10 scale TRX models and highlight where they differ, followed by a handy comparison chart at the end. We'll even take a look at the new 1/18 scale TRX-4M with its own unique features.

Two kits, eight RTRs, six replicas, one tracked truck, and a 6-wheeler—you can’t beat the TRX series for variety.

Features Shared in 1/10 Scale TRX Trucks


TRX Truck Features

Portal axles with metal ring, pinion, and portal gears Dual-plate slipper clutch Telescoping driveshafts with hardened steel U-joints 3-link front suspension with Panhard bar Aluminum GTS shocks 45° steering angle Dual-fit battery tray	4-link rear suspension Heavy-duty steel links True waterproof capability Ready-To-Run^® models also feature: XL-5™ HV speed control with Trail and Crawl modes Metal-gear, high-torque steering servos TQ™ or TQi™ 2.4 GHz radio system

Portal Axles
A signature feature of TRX-series trucks, portal axles offer two huge advantages on the trail. The first is ground clearance. The portal design allows the differential to sit much higher relative to the running surface, allowing TRX trucks to pass over taller obstacles that would snag a straight-axle truck. The second big plus is the elimination of “torque twist.” When a conventional straight-axle truck leans over as the drivetrain delivers power, that’s torque twist. The portal axle design results in more than twice the total gear reduction of a straight axle. This high gear reduction turns driveshaft RPM into torque, while low-RPM straight axle trucks delivers torque directly to the axle—resulting in torque twist that reduces traction and looks unrealistic in action.

Portal axles have an extra pair of gears at each end that raise the differential and increase the axle’s total gear reduction. Ground clearance is increased, torque twist is eliminated.

Steel Ladder Frame
All TRX-4 models are built on a pair of rugged C-channel rails made of 1.5 mm steel. Each rail is a single piece that reaches from bumper to bumper with molded crossmembers for maximum durability and strength. Even extra-long rails found in TRX-6 trucks are each one piece, not standard-length rails with bolt-on extensions.

Each C-channel frame rail is a single piece of tough 1.5 mm steel

GTS Aluminum Shocks
Standard TRX trucks ride on 90 mm GTS shocks, while lifted High Trail Editions get longer 110 mm GTS shocks for greater articulation. The aluminum bodies have 8 mm bores for authentic scale proportions while allowing sufficient oil capacity for smooth damping performance. Inside the shock, dual X-ring seals and plated shafts assure long seal life and leak free performance. Trailside ride-height adjustments are fast and tool-free thanks to the threaded shock bodies, and the dual-cap design makes shock-oil swaps and rebuilds simple.

Silver shocks are standard, with anodized red, blue, and green available as options.

Lifted High Trail Editon trucks get extended 110 mm GTS shocks for greater articulation and control.

Heavy-Duty Steel Suspension Links
TRX-4's upper and lower links are high-strength steel and equipped with captured rod ends and steel hollow balls. The rigid links resist flex and shrug off rock-crawling scrapes for long life and top trail performance.

All TRX trucks are equipped with steel links that hang tough and don’t flex.

Choosing a TRX-4

TRX-4 High Trail Editions are the pinnacle of big, lifted performance with their factory-installed Long Arm Lift Kits and highly detailed clipless bodies. Large 2.2″ wheels and tires tame even the most technical trails with extended 336 mm wheelbases on the Ford^® F-150^® and Chevrolet^® K10 for greater stability and a smoother ride. Hidden internal latches give High Trail Edition bodies smooth flowing lines with loads of bright chrome and molded body accessories for true-to-scale authenticity.

Sporting top-of-the-line Ranger XLT trim, the Ford F-150 High Trail features a factory-installed Long Arm Lift Kit and stands over an inch taller than standard TRX-4s.

The stunning K10 pickup body combines Traxxas’ clipless body technology with high-gloss chrome and artful details for an authentic scale appearance.

TRX-4 Sport models prioritize all-terrain capability with a performance-based approach to outdoor adventure. The Sports' unique bumpers increase approach and departure angles for unstoppable climbing action with the superior traction of fully-locked axles. A lightweight single-speed transmission is geared for massive torque to get the Sport up and over obstacles with ease. Whether it’s a fun trail run or a hardcore technical crawl, the TRX-4 Sport’s capability and purpose-built approach takes your outdoor adventure to a new level.

TRX-4 Sport is a leaner, performance focused truck with a lightweight pickup body, high-angle bumpers, and fully-locked axles for increased climbing versatility.

TRX-4 Sport w/Traxx comes outfitted for adventure with the unstoppable traction of Traxx, working LED lights, and a rugged Expedition Rack full of accessories.

Not two, not four, but six drive wheels—that’s the key to TRX-6’s unstoppable traction. TRX-6 trucks are the ultimate expression of Traxxas’ technology with three independent remote-locking axles and a high/low transmission to deliver massive torque or speed on demand. TRX-6 models come with brilliant LED lighting, scale wheels, and highly detailed bodies for showroom quality looks and trail-hardened style.

An independent intermediate axle gives TRX-6 Mercedes-Benz G 63 AMG 6X6 all the benefits of a short wheelbase with the stability of an extended chassis.

TRX-6 Ultimate RC Hauler is the biggest and baddest rig in the TRX lineup with tremendous off-road capability and a detailed bed for transporting the Traxxas 4-Tec.

Assembly Kits

For many RC enthusiasts, building a rig is half the fun. Traxxas offers two kits to give you the satisfaction of building your TRX-4 from the ground up with a full-color assembly manual. The TRX-4 Sport Kit comes without electronics for the ultimate in customization. The TRX-4 Chassis Kit forms a working chassis with the option to choose your own body. No matter which option you choose, Traxxas ProGraphix^® paint transforms any clear body into a custom work of art.

The TRX-4 Sport Kit includes a rugged Expedition Rack and full complement of scale accessories. Electronics are sold separately for maximum customization.

The TRX-4 Chassis Kit assembles into a complete chassis with full electronics. You complete the look with one of many different clear or pre-painted bodies.

Here’s the breakdown on what you get with each kit.

Choosing a Wheelbase

TRX-4 trucks come in a variety of different wheelbases to match the proportions of their replica bodies. The Land Rover^® Defender^® and 2021 Ford^® Bronco feature a 12.8″ (324 mm) wheelbase, while the 1979 Ford Bronco and Chevrolet^® Blazer are slightly shorter at 12.28″ (312 mm). No matter which truck you choose, all TRX-4s feature adjustable wheelbases for easy conversion to a new body. Click here for a complete how-to guide covering different wheelbase configurations.

The TRX-4 chassis’ wheelbase can be configured with a 300, 312, 324, or 336 mm wheelbase.

Bright chrome details and beautiful Sunset graphics give the 1979 Ford Bronco immediate presence in the wild.

Land Rover Defender’s rugged cage, fender flares, and molded scale accessories are ready for all-terrain fun.

Going Clipless

Several TRX-4 trucks now include the convenience of clipless body mounting, including all High Trail editions and the 2021 Ford Bronco. Clipless bodies rely on a hidden internal cage that locks the body into place with a satisfying snap. The latch’s self-energizing design actually holds tighter if a crash impact or rollover pulls on the body. To remove the body, just reach into the fender well and pull the latch toward the wheel opening. A light touch and one second is all it takes, and there are no body clips to lose.

The new TRX-4 2021 Ford Bronco uses a clipless mounting system that increases scale realism and holds tight on the trail.

There’s one more member of the TRX-4 family that deserves special mention. Outfitted with steel frame rails, oil-filled shocks, and realistic bodies, the TRX-4M^™ scales down all the fun and adventure of the TRX-4 to nearly half its size. The 1/18 scale TRX-4M is small enough for indoor crawling adventures, but its real all-terrain bona fides make it perfect for outdoor fun. TRX-4M takes on challenges with the same Traxxas-Tough^™ durability as its full-size brother with a huge range of accessories for personalized customization.

TRX-4M features the same clipless body technology as the TRX-4 along with tough body-on-frame construction, just like the toughest full-size rigs on the trail.

TRX-4M replicates the features of a full-size truck with detailed bumpers, fender flares, and scale accessories. Even LED lighting comes standard on TRX-4M.

That should cover everything you need to know about the full TRX lineup. You can view the chart below or download a PDF to compare all the TRX-4 models, and you can always reach us at 888-TRAXXAS if you have questions. Or, reach out on Facebook, Twitter, or Instagram. We look forward to talking TRX with you!

See The Full TRX Lineup