Traxxas TRX-4® 1/10 Scale Trail Rock Crawler Assembly Kit w/TQi™ 2.4GHz Radio

The Traxxas TRX-4 Kit (82216-4) is the build-it-yourself version of the legendary 1/10-scale TRX-4 crawler. It packs exactly the same technology and components as the RTR model but gives you the satisfaction of assembling it from scratch: bolt up the portal axles, the two-speed gearbox and the remote-locking differentials yourself, and learn every detail of your rig before it ever hits the trail.

All parts arrive in numbered bags with a full-colour, easy-to-follow manual. The electronics — XL-5 HV ESC, Titan 21T motor and servos — are fully waterproof and ready to install. The GTS coil-over shocks and suspension arms come pre-assembled to speed up the build.

Out on the trail, the TRX-4 shows why it sets the crawling benchmark: the 1.5 mm steel ladder chassis with moulded cross-braces soaks up even the most brutal flex, the portal axles deliver massive ground clearance and the T-Lock diffs lock and unlock remotely from the transmitter. Compatible with 6–7-cell NiMH and 2S–3S LiPo packs.

Body, battery and charger not included. Compatible with any 312 mm Traxxas clipless body (Defender, Bronco, F-150…)

• Scale: 1/10
• Drive: Shaft-driven 4WD
• Axles: Portal (dual-reduction, massive ground clearance)
• Transmission: 2-speed (high/low) with remote shift
• Differentials: Front and rear T-Lock remote-locking diffs
• ESC: Waterproof XL-5 HV (3S LiPo compatible)
• Motor: Titan® 21T 550 reverse-rotation
• Radio: TQi™ 2.4 GHz 4-channel with Cruise Control (4 servos included)
• Shocks: Silver anodised aluminium GTS coilovers, height-adjustable
• Front suspension: 3-link with Panhard bar
• Rear suspension: 4-link triangulated
• Battery: 6–7-cell NiMH or 2S–3S LiPo (not included)
• Chassis: 1.5 mm steel ladder frame
• Steering angle: 45°
• Wheelbase: 312 mm