Features of the Reaper 525 Conversion Cams Conversion cams let you update the mechanical style tensioner system to the late style hydraulic tensioner chain drive system. These use conversion Reaper camshafts with '99-'06 inner cam journals matched to '07-'17 outer cam journals, allowing the use of the '07-'17 cam plate and hydraulic chain drive tensioner system. Hydraulic chain drive components are purchased separately; options include PART #09251060 and PART #09251061. Designed to increase torque band width and increase fuel economy Great bolt-in camshaft upgrade for stock 88" and 96" engines; also performs very well in 103" strokers and will respond well to increased compression and cylinder head work Produces strong low and mid-range power with linear horsepower and torque curve Can be used with factory valve springs, pushrods and lifters Increases throttle response and eases starting 1750 to 5500 RPM power range Reaper 525 Conversion Cams FitmentFits '99-'06 Harley-Davidson Twin Cam, excluding the '06 DynaEmissions: Drag Specialties lists this part as EMIS 3. What the emissions codes meanWorks WithThese cams are the camshaft half of a tensioner conversion. The hydraulic chain drive components are on the OE+ Hydraulic Cam Chain Tensioner Conversion Kit. For the conversion as a complete package, see the HP+ Hydraulic Tensioner Conversion Kits.