Traxxas TRX-4 Upgrade JAZRIDER JR-TRX423-BK Black Aluminium Centre Gear Box  [JR-TRX423-BK]

Strengthen your TRX-4 centre with the JAZRIDER JR-TRX423-BK aluminium box

Swapping the stock plastic centre gear box for the JAZRIDER JR-TRX423-BK black aluminium unit improves durability on technical trails. The replacement housing reduces the risk of failure from impacts and sustained loading.

Why go aluminium for the centre box

Aluminium gives greater structural integrity and resists deformation under stress. That keeps gear mesh more consistent and helps protect internal components during tough runs.

Fitting and model fit notes

This centre gear box is manufactured to suit the Traxxas TRX-4 series and generally fits as a direct replacement. Installation only requires common RC tools and minimal adjustment when bearings are in good condition.

Notable benefits

• Better durability for rough use
• Minimal extra mass to preserve handling
• Precision engineered for an easy swap