This range of Kelford high performance camshafts is to suit Subaru EJ25 WRX STi with AVCS (2004 - Current) equipped with Subaru's awesome AVCS (Active Valve Control System) on the intake cams only. In addition to our catalogue range, we can manufacture custom cams to your specifications, or design a profile to suit your specific application. Please note that the correct valve spring selection will depend on the installed height in your particular cylinder heads. Please contact us to discuss the correct valve spring selection. R-199-E Camshaft Set 292&288/294 Degrees advertised duration. 11.00mm&11.00mm/11.00mm lift. 290° camshafts to suit high boost, high rpm Drag Racing engines. Ported head with +1mm valves. 67mm+ turbo. Fuel type E85 or methanol. Must be run with fixed cam timing, AVCS delete. Kelford Cams recommend valve spring upgrade KVS1847-BT. Slot/keyway style trigger on rear of intake cams.