02. With a rich history in racing and performance, Bob Wood, of Wood Performance knows a thing or two about making horsepower for both automobiles and motorcycles. His Knight Prowler cams have been used in numerous builds that have taken top honors in various dyno shootouts over the years. His cams are known for their short-duration, high-lift specs that deliver exceptional torque and horsepower. The TW-555s are designed for ’06 Dynas and ’07-later H-D Big Twins. They are bolt-in cams that work with stock springs. Fuel Moto also offers the Knight Prowler Directional Lifters ($229). These lifters can only be installed one way, allowing the oil feed hole in the lifter body to be properly aligned with the oil feed channel in the lifter bore. They are hydraulic roller lifters with a freshly designed pushrod lifter cup that provides proper oil flow through the push rod to the top end.