Fits These Models: 53AH3AGN050, 53AH3AGT050, 53AH3AGN050, 53AH3AGF050, 53AI3AGF750, 53BI3AGF050, 53AH3AGT050, 53AA5B6L, 53AA5B6L709, 53AA5B6L710, 53AA5B6L712, 17AH3AGL710, 53AA5A7M710, 53AA5A7M712, 17AF3AGV710, 17AF3AGV, 17AF3AGV009, 17AF3AGV010, 17AF3AGV210, 17AF3AGP, 17AF3AGP010, 17AH3AGP, 17AH3AGP709, 53AA5B7P, 53AA5B7P709, 53AA5B7P710, 53AA5B7P712, 17AH3AGP710, 01008434, 01008434P, 75905064, Electric Blade Power Take Off Clutch BIGBearing: The Pulley Bearing Takes a lot of abuse and is often the first thing to fail. We use a Larger Pulley Bearing for a much longer life. We designed our Billet Pulley with a snapring making the bearing replaceable. High Torque Coil: This OEM Upgrade is 120ftlbs of Torque (OEM Torque is 95 ftlbs). Higher Torque Means this Clutch holds Strong Even in the Toughest Cuts. Tough Billet Pulleys: Billet Pulleys Reduce Belt Wear and Maintain Perfect Blade Speed. Our Billet Pulley Design uses a Snap Ring and Allows for Bearing Replacement. Premium C3 Bearings: To Combat Heat HD Designed and Spec’d these bearings with C3 Clearances, Premium High Temperature Grease and on Most Models a Larger Tougher Bearing. HD Clutch es are designed at HD Clutch and Assembled in the USA. Higher Torque: 110 ft-lbs (OEM is 95 ft-lbs). We add a few more windings to our coils to provide the maximum gripping strength to prevent damaging micro-slipping during tough cutting conditions. The HD Switch BIGBearing design addresses the #1 reason Clutch es fail with a larger tougher pulley bearing. Machined Billet Pulleys: It is easy to damage formed pulley and damage (even a small stone nick) damages the belt with every rotation. With our Billet Pulley design, we include a snap ring so the bearing is replaceable, making this Clutch rebuildable. Clutch es all run very hot; we use a composite material instead of plastic to allow the heat to dissipate much faster. This makes the HD Clutch run much cooler; extending the bearing and Clutch life. HD Clutch wrote the Bearing specifications to include Premium C3 Rated Bearings and high temperature rated synthetic grease to combat heat. Less Heat = Extended Life.