STEP2. Strengthened valve springs (22001-AM001) and EVO VII retainers required for EVOⅧ～EVOⅧ MR
- HKS SS-Cam are designed to fit unmodified cylinder heads with stock Valve Springs to be a simple bolt on cam kit that can give added performance without changing any other parts or the valve timing.
- By changing cams, cam duration and lift is altered making the ideal valve timing different also. HKS SS-Cams have been tested on the engine bench to find the optimum valve timing and the knock pin has been relocated in a modified position to offer perfect valve timing by simply replacing stock cams with no need for measurement or adjustment.