HKS Fine Tune Timing Belt – EJ20/EJ25

Optimised specification to suit the Subaru boxer engine, which has a very long belt. Designed to be used with the stock EJ engine belt tensioner. Designed with valve timing during thermal expansion of the block and head in mind, ensuring correct belt tension at all times. New design allows belt teeth to fit fully into the cam gears. Increases strength and durability for high torque engines. High saturation H-NBR used in the rubber ribs for added strength.