BMW Gen1 B58 Stage 1 Performance Camshaft - 270°/268° cams to suit BMW's Gen 1 B58 engine with bolt on intake, exhaust and turbo upgrades. For an engine producing around 550-750hp running a 58-68mm turbo.
 
Still maintains full use of Valvetronic and Dual VANOS for good throttle response and wide power band. Must have valve spring upgrade, Kelford Cams recommend valve spring KVS57-BT.
 
Spring Kit Specs (Optional but Recommended)
90lb seat pressure at 36.5mm installed height. 193lb at 11.0mm valve lift. Spring coil bind height at 23.6mm.
 
BMW have released these engines in several revisions, To simplify things the Kelford team have named these revisions Gen 1, Gen 1.5 & Gen 2 (See Guide on 3rd Pic to choose which one you need)