The SLA155613TLG assembly features a low centre-of-gravity aluminium adapter mated to hardened 32 pitch steel gears for the TRAXXAS SLASH 4X4 (68086-21 version). Positioning the spur lower helps reduce rotational inertia effects on handling, and the steel spur and pinion promote reliable tooth engagement when under power.
Using the included gear sizes the expected drive ratios are: 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.
This aluminium adapter plus steel spur and motor gear combination is described to stabilise power transfer and keep mesh more consistent than softer options, which helps when adjusting final drive to favour either acceleration or top speed on Slash 4x4 layouts.
Fitment tips: check pinion seating and axial alignment, set correct mesh with a full-thickness pattern, and verify there is no interference with chassis parts. Apply appropriate thread-lock to mounting screws and confirm motor shaft engagement with the pinion adapter before testing.
A direct-fit aftermarket gear and adapter set for SLASH 4X4 owners seeking a steel spur with a low-CG aluminium adapter to refine drivetrain response and gearing options.
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