Eaton-style gear drive oil pump for CB450 delivers 4.5 liters per minute at 2700 rpm and a greater volume at higher rpm, but with a normal pressure to avoid blowing out oil seals. Drive sprocket has six large drive splines inside to match the 450 crankshaft. The primary drive gear must be reduced in width 1mm to provide clearance for the drive chain to the pump. Drawings are included with the kit. This kit does not have the possibility for external oil lines.