Traxxas TRX4M Parts & Upgrades

Shop Traxxas TRX4M parts and upgrades for 1/18 crawlers, from tires and beadlock wheels to suspension, steering, motors and drivetrain parts. Choose parts for your exact version: Bronco, Defender and High Trail K10 or F-150 builds can require different links, driveshaft lengths, body mounts and clearances.

Choose TRX4M upgrades for your build

Traction and stability: Browse TRX4M tires, TRX4M wheels and brass upgrades. Compare tire diameter, wheel hex and offset before ordering, and check body clearance at full steering lock and suspension compression. The crawler tire guide and brass weight guide explain how to plan these changes together.

Suspension: Our TRX4M shocks include INJORA 53 mm oil shocks and INJORA 59 mm brass/aluminum oil shocks. Compare eye-to-eye length and mounting points with your current setup. Longer shocks can change ride height and suspension geometry; choose the length that suits your chassis and intended travel.

Motor and drivetrain: The INJORA 180 brushed motor is available in 48T or 55T. Turn count changes the balance between speed and crawling control; also check voltage, ESC, pinion and transmission compatibility. Explore TRX4M motors and powered transmissions and our TRX4M motor guide. The INJORA V2 center driveshafts are listed for Defender/Bronco: confirm the required shaft lengths rather than assuming they fit every High Trail build.

Steering, chassis and bodies: Find TRX4M servos, LCG chassis and replacement bodies and cages. Match servo mount, horn spline and power requirements, and check which chassis a replacement body needs.

Browse the INJORA TRX4M selection or AXSPEED TRX4M selection. For a complete upgrade sequence, read the TRX4M upgrade guide.