Serpent 500428 - SRX4 Top Shaft 20T Race-Spec Replacement Shaft  [SER500428]

Reliable drivetrain control with the Serpent SRX4 Top Shaft 20T

The Serpent 500428 - SRX4 Top Shaft 20T is a purpose-built shaft for the SRX4 chassis, designed to enhance drivetrain smoothness. It aids in reducing jerky power transfer and supports stronger, more predictable throttle feel during competitive runs. The part is intended for durability under frequent use.

Why racers fit the Serpent SRX4 Top Shaft

Its 20-tooth configuration helps even out torque delivery across the gearbox, which often improves corner exit stability and throttle modulation. The shaft is a sensible upgrade for drivers chasing repeatable laps and reliable drivetrain behaviour.