This SLA155613TLG kit combines a low-centre aluminium gear adapter and hardened 32 pitch steel gears designed for the TRAXXAS SLASH 4X4 (68086-21 version). The aluminium adapter drops the spur gear relative to the chassis mount, while the steel spur and pinion give stiffer tooth engagement under load for more stable drivetrain behaviour.
The supplied gear sizes yield these theoretical gear ratios with common pinion sizes: 56T with 13T = 1:4.307, 56T with 14T = 1:4.000, 56T with 15T = 1:3.733, 56T with 16T = 1:3.500, 56T with 17T = 1:3.294, 56T with 18T = 1:3.111, 56T with 19T = 1:2.947, 56T with 20T = 1:2.800.
The parts are specified as an aluminium adapter paired with a steel spur and motor gear to help stabilise power transfer and maintain a more consistent mesh compared with softer materials. This set is useful when tuning final drive for either stronger acceleration or higher top speed on Slash 4x4 setups.
Installation guidance: verify pinion alignment, set gear mesh using a full-thickness pattern method, and check clearance to nearby chassis parts before finalising. Use suitable thread-lock and torque for mounting hardware and confirm motor shaft length and pinion seating on the adapter before running.
This kit is a direct-fit aftermarket gear set and adapter aimed at SLASH 4X4 owners who want a steel spur assembly with a low-CG aluminium adapter to refine drivetrain behaviour and ratio options.
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