AXIAL SCX30 7075-T6 Alloy Transmission Kit for 1/30 Crawlers - SCX30/38 by GPM  [SCX30/38]

7075-T6 CNC gearbox shell

This transmission kit is an aftermarket 7075-T6 CNC-machined aluminum replacement made for AXIAL SCX30 platforms and tailored to 1/30 scale brushed rock crawler use. It replaces the gearbox housing and mounting faces to give a rigid machined alloy option where durability and accurate gear mesh matter for low-speed crawling.

Mechanical notes: the design permits motor tooth-slot sliding adjustment to fine-tune pinion engagement and is offered as a replacement for factory part AXI-3311. Internal gears and bearings are not included; the builder must install these and apply appropriate grease to the gears during assembly to ensure smooth operation.

Small hardware is pre-packed for shipping; final assembly requires common hobby tools and careful attention to torque values. For long-term reliability, apply a medium-strength threadlocker to metal-to-metal screws in high-vibration areas.

For builders upgrading an AXIAL SCX30 platform, this GPM 7075-T6 alloy transmission kit provides a precision-machined gearbox shell and mounting options that support tighter gear alignment and consistent pinion engagement; proper installation requires sourcing internal gears and bearings separately and applying grease and medium-strength threadlocker as noted.