Serpent SER903771 XLI Gen2 2-Speed Gear Set (6) for SRX8GT R GP - Race Tuned  [SER903771]

Precision gearing upgrade for Viper 989 GP

If you want crisper shifts on a Serpent Viper 989 GP, the Serpent SER903771 2-speed gear set gives reliable, controlled transitions under load. It is aimed at racers and hobbyists who need predictable gear engagement on the straights and out of corners.

Engineered to fit the Viper lineup

The SER903771 set is made to integrate cleanly into the Viper 989 GP drivetrain, helping improve shift timing and vehicle balance. Whether running timed heats or practice laps, the gearing helps keep power delivery consistent.

Durable build for track use

Manufactured from quality materials, the SER903771 gears resist wear from repeated high rpm shifts. The set is designed to hold up in competitive conditions while maintaining smooth operation over time.