HD Switch AM141536 HiTorque Clutch & Blade Switch AM135131 for John Deere X300 X300R X304 X305R X310 X320 X324 X340 X360 X500 X520 X530 X534 X540 X590 Mower Tractor - Billet Pulley & 10AMP OEM Upgrade

HD Clutches are designed by HD Clutch and Assembled in the USA. We use Machined Billet Pulleys for several reasons. The first, formed pulleys are damaged easily, and any 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. Lastly and most importantly, a Billet Pulley does not spread during tough loads and maintains a Constant blade speed. Allow us to explain: When a pulley spreads it opens up and allows the belt to sink in slightly, this acts like a smaller pulley and slows the belt speed, which slows downs the blades and adds additional wear to the belt. Higher Torque: We add a few more windings to our coils to provide the maximum gripping strength to prevent damaging micro-slipping. Clutches 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.