525C Chain Drive Camshaft Set. Fits Dyna 2006 & Twin Cam 2007-2017525 CAMS A real workhorse, designed to increase torque band width and increase fuel economy. Great bolt in camshaft upgrade for stock 88 & 96 engines also performs very well in 103 strokers. Produces strong low and mid range power with a linear horsepower and torque curve. Can be used with factory valve springs, pushrods and lifters. Increases throttle response and eases starting. Will also respond well to increased compression and cylinder head work.