The Serpent SER903732 2-speed gear 56T XLI Gen2 is designed as a direct replacement for the Viper 989 GP series and aims to restore smooth transitions between ratios. It is engineered to match the original mounting and engagement points of the Viper gearbox.
Before assembly, remove any dirt or old lubricant from the gearbox and test mesh by hand. Proper alignment and a careful break-in help extend service life. Check the gear periodically and swap it out if you find excessive wear.
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