Traxxas TRX4M Bronco/Defender Steering Block Upgrade, Brass - JR-TRX4M01-BK by Jazrider  [JR-TRX4M01-BK]

Front axle steering blocks in brass for TRX-4M

This is an RC-scale set of front steering blocks supplied in black with brass construction for Traxxas 1/18 TRX4M platforms. The JR-TRX4M01-BK units replace the stock front steering blocks on TRX4M Bronco and TRX-4M Defender 1/18 models and are aimed at hobbyists running scale trail crawlers.

Adding brass changes how the front axle behaves by increasing mass and giving a metal bearing surface where plastic normally sits. Practically, this improves wear resistance at pivot points and adjusts steering feedback, which can be used to fine-tune front-end balance and steering effort on scaled runs.

Installation notes: these blocks are designed as direct-fit replacements for the listed 1/18 TRX4M Bronco and TRX-4M Defender steering knuckles and typically reuse factory screws and hardware. After installing, double-check steering geometry and wheel alignment and ensure pivots rotate freely without binding.

Tuning impact: because brass adds rotating and unsprung mass at the front, expect a moderately heavier steering feel and a different settling characteristic on rough terrain. Treat this upgrade as part of a wider tuning plan — review tyre choice, suspension preload and servo endpoints to accommodate the altered front-end behaviour.