Feuling Reaper 574 Chain-Driven Cams for Twin Cam 1009 Wicked power band for modified engines and an excellent bolt-in for stock 96in., 103in. and 110in. engines; a great all-around camshaft with solid low end performance and mind blowing mid- and top-end power Responds well to modified cylinder heads, increased compression ratio, performance exhaust and intake systems Extremely smooth cam lobe design creates a smooth and quiet valve train Performance valve springs required on 99-04 engines and performance pushrods and lifters recommended 2100-6500 rpm power range