Description
- High efficiency four-valve heads
- Greater flow efficiency shortens timing durations while boosting performance
- More torque and power from bigger engines 114 inches and all-around riding with an RPM range of 1500-5700
- INTAKE: Timing at .050 = 06/30.M504 grind.CL = 102.Duration at .050 = 216.Duration at .020 = 249.Valve lift = .504.Lift at TDC = .105.Hi-lift springs
- EXHAUST: Timing at .050 = 56/00.CL = 118.Duration at .050 = 236.Duration at .020 = 274.Valve lift = .504.Lift at TDC = .080
