Bolt-in cam providing power from 2200-5200 RPM in engines with displacement from 107-135 cubic inches. No need for expensive dyno tuning. Display vehicle data channels in real-time. Weather-resistant for use in all conditions. High contrast display, viewable in direct sunlight. Kit includes 475 cam, Dynojet PV-3 tuner, all required bearings, o-rings and hardware. Made in the USA. Designed to work specifically with S&S Stealth air cleaner kit and MK45 mufflers with a stock header or S&S Eldorado exhaust system..