The Serpent 903682 2-speed shaft is a practical upgrade that sharpens the Viper 988 GP transmission. With a rugged build, the shaft is focused on delivering reliable gear changes and longer service life under competitive use. It is matched to the Viper 988 series so you get consistent results lap after lap.
This 2-speed shaft is made to slot into the Viper 988 GP assembly and supports straightforward installation without complex mods. Its design emphasises steady performance, which helps when dialing in gear ratios and tuning acceleration. Use it when you want a dependable component in high-speed running.
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