Mugen MRX-5 1st Gear 18T by Arrowmax AM-MRX5-H0759  [AM-MRX5-H0759]

Clutch pinion for Mugen MRX-5

This Arrowmax AM-MRX5-H0759 1st Gear 18T is a dedicated clutch pinion produced for the Mugen MRX-5 platform, manufactured from 7075-T6 aluminium with a hard coating to resist wear during use. It is intended as a direct replacement or upgrade for MRX-5 clutch assemblies and is part of a tooth-count range that offers setup flexibility.

Functionally the gear serves the primary role of transferring torque from the motor pinion to the spur gear within the RC gearbox, and the hard-coated 7075 material focuses on abrasion resistance under typical electric RC loads. The part is compatible with spur gears used on the MRX-5 and is provided to support precise gear meshing and predictable tuning changes when altering tooth counts.

Available tooth counts in this series include 16T, 17T, 18T, 19T, 20T and 21T, allowing straightforward gear ratio adjustments for track tuning without changing the motor pinion. When replacing the 1st gear, verify spline fit and clutch interface on your MRX-5 before final assembly to ensure correct engagement and backlash.