Our Billet Pulley Design uses a Snap Ring and Allows for Bearing Replacement. Machined Billet Pulleys: It is easy to damage formed pulley and damage (even a small stone nick) damages the belt with every rotation. Cool Coil Technology: We use a Proprietary Composite Material Instead of Plastic. We add a few more windings to our coils to provide the maximum gripping strength to prevent damaging micro-slipping during tough cutting conditions. Less Heat = Longer Life This Allows the heat to Escape the Clutch Faster. HD Clutch wrote the Bearing specifications to include Premium C3 Rated Bearings and high temperature rated synthetic grease to combat heat. 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. HiTorq 150ftlb BIGBearing Clutch & PTO Switch for Husqvarna RZ4219 ELECTRIC PTO CLUTCH fits John Deere GT225 GT235 GT235E GT245 GX255 Lawn... The result a total printing solution designed to fit your needs. Size: 42" x 150 ft; Paper Color(s): White; Paper Weight: 21 lb; Rolls Per Unit: 1 BIGBearing HiTorq 130ftlb Clutch AM126100 & PTO Switch For Higher Torque: 150 ft-lbs (OEM is 125 ft-lbs). With our Billet Pulley design, we include a snap ring so the bearing is replaceable, making this clutch rebuildable. Less Heat = Extended Life. This makes the HD Clutch run much cooler; extending the bearing and clutch life. Clutches all run very hot; we use a composite material instead of plastic to allow the heat to dissipate much faster. BIGBearing: The Pulley Bearing Takes a lot of abuse and is often the first thing to fail.