Arrowmax AM-RX8-348521 21T Pinion Gear for XRAY RX8 Lightweight  [AM-RX8-348521]

Improve XRAY RX8 drive feel with Arrowmax 21T pinion

Upgrade your XRAY RX8 using the Arrowmax AM-RX8-348521 21T pinion gear. Machined from 7075-T6 aluminum, this pinion keeps weight low while offering strong resistance to race wear. The hard-coated surface helps maintain gear life over repeated sessions.

Accurate machining for reliable spur mesh

Arrowmax delivers a carefully cut pinion that lines up precisely with common spur gears, reducing noise and boosting drivetrain efficiency. With tooth counts available from 16T up to 21T, you can dial in gearing for acceleration or top speed depending on track conditions.

Why 7075-T6 makes a difference

7075-T6 aluminum combines high tensile strength with low mass, lowering rotational inertia for crisper throttle response. The material also holds up well under load, helping the pinion resist deformation during hard runs.