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  4. "THE CURE" MAIN SPROCKET GASKET KIT FOR 4-SPEED BIG TWIN

"THE CURE" MAIN SPROCKET GASKET KIT FOR 4-SPEED BIG TWIN

8 products

Category dedicated to the main pinion seal kit for 4-speed transmissions on Harley-Davidson Big Twin motorcycles. This assembly includes the necessary O-ring or retaining seal to secure the gearbox pinion, preventing oil leaks and ensuring correct engagement.

About this category

Compatible with classic and modern models from the Big Twin family using 4-speed transmissions, including Evolution, Twin Cam, and Milwaukee Eight engines in specific 4-speed configurations. Ideal for gearbox repairs and transmission preventive maintenance. Replaces worn seals to prevent pinion slippage and improve the durability of the mechanical assembly.

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