AEM Electronics Tru-Time Adjustable Camshaft Gears increase horsepower and torque without the need to change the existing camshaft(s) and are a must-have upgrade for engines that are milled, forced induction, high compression or using aftermarket competition cams.Increases horsepower and torque without any cam changes and are ideal for heavily modified enginesGrade-8, six-point hex bolts stand up to repeated adjustments and feature an integral washer flange for greater load distributionTrue laser-etched markings on the leading edge of the gear allow for quick, accurate adjustmentsCNC-machined from 6061-T6 billet aluminiumThe belt surface is hard anodizedRecommended cam gear settings includedManufactured and assembled in the USAAEM's  Tru-Time cam gears enable users to match cam timing with their vehicle's tuning state by advancing or retarding the cam profile(s) in one-degree increments via true laser-etched markings. Precision-cut gear teeth ensure no premature wearing of the cam gear