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  4. 5 to 6 speed conversion kit for Big Twin

5 to 6 speed conversion kit for Big Twin

Category dedicated to 5-to-6 speed gearbox conversion kits for Harley-Davidson Big Twin engines. Includes gear sets, shafts, synchronisers and the components needed to transform the original five-speed transmission into a six-speed gearbox. Compatible with Evolution, Twin Cam and Milwaukee Eight engine families.

About this category

Improves road performance and the high gear ratio, offering greater smoothness and fuel efficiency. Parts designed for direct installation on Touring, Softail, Dyna models and classic models with large-capacity V-Twin engines.

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