Serpent 903799 Race 18T Aluminium Pinion for XLI Gen2  [SER903799]

Race-Grade 18T Aluminium Pinion

The Serpent 903799 aluminium 18T pinion is a compact upgrade for XLI Gen2 owners wanting lighter rotating mass and crisper drive feel. Precision machining ensures the gear performs reliably under hard running.

Performance from Lightweight Metal

Using aluminium reduces the inertia on the motor shaft, which helps the car accelerate more rapidly and feels livelier on exit. The material still offers good resistance to wear when maintained properly.

Designed to Fit XLI Gen2 Geometry

This pinion is produced to match the XLI Gen2 gear interface and tooth profile so it meshes smoothly with the spur gear, improving drivetrain efficiency and cutting down on uneven wear.

Quick Install for Competitive Setups

Swap in the Serpent 903799 as part of a gearing tune or race prep session to get noticeable changes in throttle response. Hobbyists will find the install straightforward and repeatable.