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

Serpent SER903799 Centax gear-pinion Aluminium 18T XLI Gen2
Price:
£11.09
Brand:
Serpent
Model:
SER903799
Condition:
Brand New
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CNC Aluminium Pinion for Precision Drive

The Serpent 903799 18T pinion is CNC machined from aluminium to provide a precise, light-weight option for the XLI Gen2 chassis. Its construction aims to reduce inertia while maintaining reliable tooth integrity under race loads.

Balance Between Weight and Strength

Aluminium construction lowers the load on the motor and driveline, giving sharper throttle transitions without compromising the gear profile. The exact tooth cut helps maintain consistent contact with the spur gear.

Exact Compatibility with XLI Gen2

Produced to match the XLI Gen2 gear geometry, this pinion provides dependable engagement and helps reduce drivetrain play. Properly installed, it supports efficient power transfer and limits excessive wear.

Practical Upgrade for Club and Series Racing

Whether preparing for a club meeting or fine tuning a race car, the Serpent 903799 is an easy-to-fit component that delivers noticeable improvements in driveability after a straightforward gear mesh check.

Yes, the 18T aluminium pinion fits typical high KV brushless motors used on XLI Gen2 cars, but ensure your overall gear ratio suits the motor to avoid overloading the drivetrain.
Check teeth and mounting after each race or practice session. Look for nicks or deformed teeth and confirm the grub screw is tight and free from thread damage.
Light, careful polishing to remove burrs is fine, but avoid aggressive material removal which will alter tooth geometry. If teeth are significantly damaged, replacement is the safer option.

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