This is an upgraded version of the OEM Clutch. Xtreme Mower Clutches, uses machined billet pulleys, upgraded bearings with high temperature grease, and a triple protected wire harnesses. The proprietary Xtreme Cool Coil technology reduces temperature to extend clutch life, and has a replaceable pulley bearing. Every Xtreme Clutch comes with a watertight integrated wire harness - PLUG and PLAY !