Hybrid Racing K-Series Timing Chain Tensioner - HYB-TCT-01-05Dual ratchet design. Tighter tolerances than OEM Honda chain tensioner. More durable than OEM unit. A must have if your using aftermarket cams and valve springs. Despite being a fairly robust motor, k series engines have been found to have weak timing chain tensioners that fall victim to excessive wear when aftermarket cams are installed in the motor (and in some instances with stock cams). The fast ramp rate of aftermarket cams is the main cause of