TRX-4 Clipless 1/10 4X4 Crawler Builder's Kit

TRX-4® set the standard for off-road versatility with its radical design and rugged durability. The TRX-4 chassis kit combines the same innovative features as the RTR vehicle with the fun and excitement of building your own kit. Build your own portal axles, high/low range transmission, and remote-locking differentials. All the parts are organized neatly in labeled bags along with waterproof electronics and pre-assembled shocks and suspension links. A fully illustrated color manual makes the kit as much fun to construct as it is to take off-road.

The TRX-4 Chassis Kit includes a full-color instruction book that’s easy to follow and fun to use. Each section corresponds to a labeled bag with step-by-step assembly instructions. True-to-scale part illustrations and ruler charts make it easy to differentiate between different screws, bearings, and gears.

The TRX-4 Chassis Kit arrives ready to assemble with a full-color instruction guide, TQi™ 4-channel 2.4 GHz radio system, and complete waterproof electronics including servos, XL-5™ HV ESC, and Titan® 21T motor. Key parts like shocks and suspension links come pre-assembled to make building easy and fun.

Clipless body mounting makes it easy to customize your TRX-4 kit with any accessory Traxxas 312 mm wheelbase body (sold separately). The hidden latching system provides clean, flowing lines for maximum scale realism. On the trail the clipless body holds tight when you need it, but releases in just seconds to access the chassis.

True-to-scale part illustrations and ruler charts

Helpful assembly tips and clear illustrations

Fully waterproof design

Five drive profiles

Sport Mode — forward / brake / reverse

Race Mode — forward / brake / no reverse

Training Mode™ - 50% forward / 100% brake / 50% reverse (patented)

Trail Mode — forward / brake / reverse / with trail-tuned drag brake in neutral

Crawl Mode — forward / instant reverse - no neutral with 100% hill holding brake

Traxxas EZ-Set® one-button setup

Large, efficient heat sink

Wide voltage latitude 6–7 cell NiMH (7.2–8.4 V) and 2–3s LiPo (7.4–11.1 V)

Two stage low voltage protection (LVD)

Internal cooling fan

Precise, preset gear mesh adjustments

Motor retention separate from gear mesh

Increase ground clearance (3.14″)

Eliminate torque twist

Steel gears

Improve axle geometry and reduce strain on driveshafts

4-channel transmitter

5-channel micro receiver (6533) with fail-safe security and integrated telemetry ports

Compatible with optional TQi Traxxas Link Wireless Module (6511) to access full Traxxas Link app functionality (sold separately)

Automatically stores and loads settings for up to 30 Traxxas Link enabled models

Exclusive Cruise Control feature for extended trail driving

Adjustable steering and throttle sensitivity (exponential)

Adjustable steering and throttle endpoints

Patented waterproof receiver box with easy-access plug

1.5 mm thick steel frame rails increase torsional rigidity

Innovative design allows four wheelbase positions (300 mm, 312 mm, 324 mm, 336 mm)

Adjustable rear shock tower positions for SWB and LWB configurations

Bumpers adjust fore and aft

Rugged rock rails adjust for width

Wire routing clips integrated into frame rails

Hinged battery strap allows quick and easy battery access

No pins to lose

Accommodates different height batteries

Accepts full-size long battery packs

Integrated compartment accepts smaller 1/16 scale batteries (with optional strap)

Full-time shaft driven 4-wheel drive

Tough 6 mm stub axles

Steel front CV driveshafts

Hardened steel rear axle shafts

Remote locking steel gear differentials with cable-actuation

Steel gear transfer case

Two speed high/low range with remote shifting

Dual horizontal shafts

Twin friction plate slipper clutch

Easily removed for servicing

Chassis mounted 2075X metal gear digital servo

Superior 45° steering angle

Direct steering (no servo saver)

Steering geometry corrected for bump steer

Front — 3 link with panhard

Rear — Triangulated 4 link

Heavy-duty rod ends with steel hollow balls

5 mm diameter steel link rods with 4 mm threaded ends

Oil-filled coilover GTS shocks

Silver-anodized aluminum bodies

Threaded bodies with collars easily adjust ride height

Silky smooth damping for the toughest trails

O-ring cap seal and dual X-ring shaft seals

1.9″ Canyon Trail tires with trail-tuned foam inserts

Pre-glued and mounted to tough black scale wheels

Trail tuned S1 rubber compound

12 mm steel hex

Sealed Ball Bearings

Hex hardware with Rust-Resistant Black Oxide Coating

Name: TRX-4 Unassembled Kit

Type: Crawler

Skill Level: 2

Scale: 1/10

Weight: 102.72 ounces (2.91 kg)

Length: 20.57 inches (523 mm)

Width: 9.78 inches (249 mm)

Front Track: 9.78 inches (249 mm)

Rear Track: 9.78 inches (249 mm)

Height: 6.26 inches (159 mm)

Wheelbase: 12.28 inches (312 mm)

Ground Clearance: 3.14 inches (80 mm)

Approach Angle: 63.82°

Departure Angle: 43.22°

Breakover Angle: 59°

Shock Length: 3.54 inches (90 mm)

Wheel Size: 1.9 x 1.02 inches (49 x 26 mm)

Tire Size: 4.64 x 1.89 inches (118 x 48 mm)

Transmission: 2-speed High/Low, remote shifting

Differential Type: 4 gear, remote locking

Gear Pitch: 32

Chassis Structure/Material: Steel ladder frame with Nylon composite cross members

Driveline: Shaft-driven 4WD

Steering: Chassis mounted 2075X metal gear servo

Radio System: TQi™ 2.4 GHz 4-channel transmitter with 6533 receiver

Battery Compartment Specs: 159 mm x 47 mm x 23/26 mm

Motor Name: Titan® 21T Reverse Rotation

Motor Type: High-torque brushed motor

Motor Weight: 8.47 ounces (240 g)

Motor Length: 3.07 inches (78 mm) overall length, 2.25 inches (57 mm) can length

Motor Diameter: 1.53 inches (39 mm)

Motor Shaft Size: 3 mm

Motor Connector Type: Bullet

ESC Name: XL-5™ HV

ESC Type: Brushed

ESC Case Size: 1.23 inches (31 mm) / 2.18 inches (55 mm) / 1.04 inches (26 mm)

ESC Weight: 2.60 ounces (74 g)

ESC Motor Connectors: Bullet

ESC Battery Connectors: Traxxas High-Current Connector

ESC Power Wire: 14 gauge

T-Lock™ Front And Rear Differentials

Two-Speed Transmission

XL-5 HV Power System

TQi Radio System with Servos

Full Color, Detailed Assembly Instructions

Body

Battery

Charger

(4) AA alkaline batteries

This product may only be shipped within the United States. International orders will be cancelled and refunded.

Brand: Traxxas

MPN: 82216-4

Added: 2025 - July

Status: Stock

Discount Eligibility: Discount Ineligible

SKU: TRA82216-4-R6

UPC: 020334032676

Location: K-Top