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

Performance-minded pinion for the MRX-5

The Arrowmax AM-MRX5-H0759 1st Gear 18T is an aftermarket clutch pinion made for the Mugen MRX-5 platform. Constructed from 7075-T6 aluminium and treated with a hard coating, it is intended to resist wear during regular electric RC operation and to serve as a dependable replacement or upgrade.

This pinion's primary function is to pass torque from the motor pinion to the spur gear while preserving consistent mesh. The hard-coated 7075 alloy focuses on abrasion resistance so gear geometry stays predictable when you change tooth counts for tuning.

Offered tooth counts are 16T, 17T, 18T, 19T, 20T and 21T to allow simple ratio changes without modifying the motor pinion. Before running, always confirm spline engagement and clutch contact on your MRX-5 to ensure correct backlash and reliable engagement.