Serpent SER903728 2-Speed Spring Replacement for Viper 989 GP SER600072  [SER903728]

Serpent SER903728 Spring for Smoother Gear Shifts

The Serpent SER903728 2-speed spring is a purpose made spare for the Viper 989 GP that helps deliver consistent, smooth gear transitions. It is a compact service part that supports reliable shifting under load for club racing and daily use.

Model Fit and Function

Designed to work with the Serpent Viper 989 GP and related SRX8GT R GP SER600072 fitments, this spring provides repeatable tension and predictable engagement for two-speed gearboxes. Use it when you need steady shift points and dependable behaviour on track.

Replacing the Spring

Swap the 2-speed spring with the vehicle powered down and following the factory service instructions. Remove the gearbox cover, change the spring, check alignment and test the gearbox on a stand before running. Regular inspection prevents worn springs from affecting shift quality.