Camshaft - Reaper® EVO 543 Series - Evolution Big Twin '84-'99Offers more power than the 525 cams without sacrificing low end torque Extremely smooth cam lobe layout maintains quiet valve train and produces the smoothest cruise power band available Excellent bolt in camshaft for stock to mid 96" and 103" engines and works well in 88" and 96" engines Cam is easy starting, increases throttle response and fuel mileage Responds well to increased compression ratio, performance exhaust and a high flow air cleaner 1900