264°/270° cams for the K20C4 engine. Cams suit street/track day cars. Suits 54-66mm turbo upgrade. For engines making 450hp+. Increase in mid-high rpm power. Valve spring upgrade required for high lift. For up to 9000rpm Kelford Cams recommend KVS279-BT. Valve to piston clearance needs checking. Primary exhaust lobe spec: 240° / 9.9mm