Kelford Performance CamshaftsThe Kelford Cams range of camshafts for Nissan RB20 and RB25 engines has come from many years of racing RB engines down here in New Zealand. The HL series are popular because there is no head clearancing required, but the more serious engine builder uses the higher lift, split lobe profiles. This catalogue range is designed for hydraulic lifter engines (with the exception of the NEO), however solid or haydraulic lifter custom profiles are available.