The Serpent 904213 mainshaft is a key spare for Viper 990E owners who want consistent drivetrain behaviour. It is designed to fit precisely and support reliable performance during regular running.
Specifically matched to the Viper 990E, this mainshaft gives a snug fit and dependable wear resistance to help preserve smooth power delivery. It is a sensible swap for worn parts or for those wanting incremental drivetrain stability gains.
Copyright © 2008-2025 rcjaz.co.nz All rights reserved