This aftermarket main shaft is an RC-scale replacement part produced by GPM for the TRAXXAS SLASH 4X4 platform, supplied as a 1 pc set. The design pairs an aluminium shaft body with hardened steel end fittings to balance reduced rotating mass with wear resistance at contact points.
Fit and installation are straightforward for hobbyists familiar with Slash 4X4 driveline service: remove the original shaft from the gearbox or output assembly, inspect splines and bearings for wear, and install the GPM shaft using the original retaining hardware. No special tools beyond standard hex drivers and basic shop supplies are required.
In tuning terms this low‑CG shaft helps lower rotating mass concentration while the hardened steel ends preserve interface durability, making it useful when aiming for smoother driveline response and longer service intervals in off‑road use and club‑level tuning setups.
This GPM main shaft is intended as a direct replacement for Slash 4X4 drivetrains where reduced rotating mass and reinforced bearing interfaces are desired; verify spline and retaining hardware compatibility before final installation.
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