Steel Spur Gear Upgrade for PRO-MT 4x4 (PRO631802)

The Steel Spur Gear Upgrade for PRO-MT 4x4 is a hardened steel spur gear designed to strengthen the PRO-MT 4x4’s drivetrain and handle higher power.

Crafted from CNC-machined hardened steel and finished with a black oxide coating to resist rust, the gear is narrowed and lighter than the stock part to reduce weight and friction for smoother, quieter performance. As a direct stock replacement, it fits PRO-MT 4x4 and PRO-Fusion SC 4x4 models, making it a practical upgrade for high-power builds.