EVO 8 & 9 AEM Tru-Time Cam Gear Black 5-Bolt

American-made AEM Power Tru-Time adjustable cam gears allow you to get maximum performance out of your engine by advancing or retarding cam timing in precise, one-degree increments. That's especially useful for heavily modified engines. They're CNC-machined from 6061 T-6 billet aluminum and have precision-cut, hard-anodized gear teeth. There are also laser-etched markings on the leading edge of the gears in one-degree increments for easy adjustment. Grade 8 bolts, installation instructions, recommended cam-gear settings, and decals are included.