Integrated Engineering Cam Gears allow you to adjust your power band by advancing or retarding your cam timing without actually changing your cam. This adjustment allows you to dial in whatever cams you have to the setup you are running for peak power. Each cam gear is precision?CNC?machined from solid 6061 aluminum, and features a real one piece male?keyway?for an exact?OE?fit. The cam gear outer rings are machined to?OE?specifications for a perfect mesh with your timing belt and then hard anodized for wear. The threads are roll form tapped to create the toughest threads available, and then stuffed with high quality stainless ARP bolts to lock it all together. Finally, a flawless layer of bright dip anodizing is interrupted only by the crisp laser etching which ensures you can always know exactly where your cams are positioned.