Max Motosports Electric PTO Clutch for MTD Cub Cadet Troy Bilt ZT RZT 42 50 Mustang XP 917-04622 - Upgraded Bearings Stainless steel brake rivets for a long and safe service life Full Control of Clutch Engagement Simplified No Linkage Design SPEC: 1.00" Crankshaft, 5.923" Pulley, Counter Clockwise, A/B Belt, 125 ft.lbs torque Fits: Cub Cadet 917-04622