4AGE-16V Naturally Aspirated Camshafts - High Lift single seater racing or drag cams to suit professionally built competition 4AGE 16V engine. Will pull to around 10.5k rpm depending on engine. More top end power than the 193HV-B. 'HV' high velocity cam profile, more cam sweep area than the stock shim will allow. Must convert to shimless or shim under bucket style lifter. Kelford Cams recommends KVS101-BT valve spring.