Toyota 4AGE Racing Camshaft: High Lift cams to suit professionally built naturally aspirated 4AGE 16V competition engines. Will pull to around 9.5k rpm depending on engine. 'HV' high velocity camshaft 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 springs.