The Serpent SER903728 2-speed spring is supplied as a replacement part for the Viper 989 GP to restore positive gear shifts. It helps maintain the transmission's intended shift characteristics for competitive and casual use.
Intended for use in Serpent Viper 989 GP and SRX8GT R GP SER600072 gearboxes, this spring ensures steady tension so shifts occur predictably under load. It is a sensible part to stock for routine maintenance and pre-event checks.
Install the new spring with the model switched off and consult the service manual for the correct removal procedure. After refit, run the gearbox by hand to confirm correct engagement and inspect surrounding parts for wear.
Copyright © 2008-2025 rcjaz.co.uk All rights reserved