EXHAUST VALVE YAM Rear Bumpers These belts are built with

These belts are built with lab-proven technology and trail-proven strength—you won’t find a better set of belts anywhere

With a factory-calibrated starting point and full tunability

TTS Camshafts are designed to provide smooth power delivery throughout your engine's entire operating range

2 bumpers per package

Ultra-durable

EXHAUST VALVE YAM Rear Bumpers These belts are built withThese materials have proven heat and corrosion resistance properties. Each valve is designed using Finite Element Analysis software, and profiles are tested on our computerized flow bench. Strict attention is paid to the surface preparation of the valves, and the purity of the chrome is closely monitored. A 360 degree anode is used to produce the highest possible grade of hard chrome finish. White Diamond Valves are light, strong, one piece forgings