Provide the ultimate in arm-stretching power on the street or in competition Power proven and backed by hundreds of exhaustive hours on V-Thunder's dyno and in on-bike testing, these cams provide added punch at all levels of performance for Evolution motors while maintaining the longevity and integrity of valvetrain parts V-Thunder cams are made with SAE6150 bearing-quality steel and induction-hardened for optimum surface longevity Tolerances are extremely precise with the aid of computer-controlled machining centers Made in the U.S.A.. V-THUND EVL3010 CAM 84-99