BMW M car Stage 3 drag racing cams designed for professionally built S58 engines producing 1400hp+. Turbo sizing 76mm+ on high boost. Ethanol blend or methanol.
Valve Spring Upgrade is required, Kelford Cams recommend valve spring KVS58-BT.
Please check intake intermediate rockers for clearance to the new racing cam lobe, OEM pressed steel rockers have sharp edges which may foul on the bigger cam lobe.
Trim/deburr as necessary
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