XRAY RX8 20T Pinion Gear 7075 HARD by Arrowmax AM-RX8-348520  [AM-RX8-348520]

20T pinion for XRAY RX8

This Arrowmax AM-RX8-348520 pinion is an RC-scale replacement pinion manufactured for use with the XRAY RX8 platform. Machined from 7075-T6 aluminium and hard coated, the part is described as lightweight and durable and designed to mesh cleanly with the car's spur (large) gear.

The part is labelled for the 2ND position in the motor/pinion stack, and is offered in a range of tooth counts including 16T, 17T, 18T, 19T, 20T and 21T to allow straightforward gear ratio adjustments without changing the spur gear. Swapping pinions lets you tune acceleration versus top speed and fine‑tune clutch engagement on two‑stage clutch setups.

When fitting this pinion on an RX8, confirm correct mesh between pinion and spur, ensure axial alignment on the motor shaft, and check that the gear runs without binding. The pinion is an RC-scale component intended solely for model use.