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👉 Check Latest PriceJapspeed crankshaft pulleys are crafted to enhance your engine’s efficiency by reducing rotational mass and boosting horsepower output. Precision-engineered for durability and performance, these pulleys optimise power delivery and throttle response, making them the perfect upgrade for performance-focused vehicles.
Manufactured from high quality 6061-T6 aluminium, reducing weight without compromising strength
Designed to reduce the rotating mass, improving throttle response and allowing your engine to rev faster
Reduces parasitic drag, freeing up more power from your engine
We recommend fitting new belts when fitting under-drive pulleys
Direct bolt on replacement in place of the old pulleys