Viper 989 GP 2-Speed Spring SER903728 by Serpent for SRX8GT R GP SER600072  [SER903728]

Serpent SER903728 2-Speed Spring for Cleaner Shifts

The Serpent SER903728 2-speed spring is a direct replacement part for the Viper 989 GP that restores crisp gear changes. It is made to keep shift points consistent across varied driving conditions.

Where It Works

This spring is intended for use in Serpent Viper 989 GP transmissions and compatible SRX8GT R GP SER600072 setups, delivering stable tension for repeatable engagement. It suits racers and hobbyists who want precise shifting without guesswork.

Quick Swap Guidance

Changing the spring is a simple maintenance task when performed with the model switched off and secured. Follow the service manual to access the gearbox, replace the spring, then run a bench test to confirm the shift timing is correct.