GPM Racing Aluminium Rear Gear Box - 16pcs Set for Traxxas 1/10 TRX4 (TRX4013)

Precision-fit aluminium rear gearbox for TRX4

This aluminium rear gear box set is a 16 pcs RC replacement designed to interface with TRAXXAS TRX4 Trail Crawler rear assemblies, sold as model TRX4013. The components are engineered to secure the rear differential housing, suspension link mounts, rear axle link attachment points and the rear C hub, improving rigidity at these junctions for scale crawling applications.

The kit provides metal replacement hardware intended to reduce flex at key attachment points and preserve drivetrain alignment during low speed technical crawling. It is offered as an aftermarket model accessory only and is not for use on real vehicles.

Installation notes: each component is supplied separately for direct replacement of corresponding stock parts; confirm orientations, trial fit all pieces on your TRX4 Trail Crawler rear assembly prior to final installation and retain original fasteners as templates.

Packing includes

• Stainless Steel Cap Head Screw 2.5×14 – 4pcs
• Stainless Steel Flat Head Screw 2.5×10 – 4pcs
• Stainless Steel Flat Head Screw 2.5×6 – 6pcs

Specifications

• Item Aluminium rear gear box set, 16 pcs
• Material Aluminium
• Model Number TRX4013
• Compatibility TRAXXAS TRX4 TRAIL CRAWLER

This TRX4013 aluminium rear gear box set is supplied as a metal replacement package for TRAXXAS TRX4 Trail Crawler rear assemblies, intended to improve mounting rigidity and maintain drivetrain alignment for scale crawling. Verify part positions and screw lengths against your chassis before completing installation.

What does the TRX4013 kit replace?

The kit replaces selected rear mounting hardware on TRX4 Trail Crawler rear assemblies with aluminium components to reduce flex at differential and link mounting points.

Are the supplied screws the correct lengths?

The packing list specifies stainless steel screws by size; verify each screw against the mounting location for correct engagement and thread engagement before final torquing.

Any special fitting advice for technicians?

Perform a full dry assembly to confirm alignment, use progressive tightening sequences to avoid misalignment, and reference original fasteners and spacings during the final install. Write Product Review Please sign in your account before you can write any review. Sign In Close

Made to order: GPM Racing parts are shipped to us from GPM’s factory, so please allow around 14 days for dispatch.