Protaper 033229 PTR Rear Sprocket - Aluminum exhaust-pipes 1979 Triumph Bonneville 750 T140ES

1979 Triumph Bonneville 750 T140ES

2012-2013 Moto Guzzi Griso 8V SE

2005 Harley Davidson FXDC Super Glide Custom

1991 Yamaha YZ250

3-position quick-switch rebound

Protaper 033229 PTR Rear Sprocket - Aluminum exhaust-pipes 1979 Triumph Bonneville 750 T140ESRace Spec (RS) Rear Sprockets feature our revolutionary Angled Mud Groove. This exclusive design creates a self cleaning effect during operation, shedding away mud that would otherwise lead to horsepower loss and sprocket wear. With their precise CNC machining and unique layout, these grooves also allow an increase in tooth surface area of up to 40% over competing sprockets. As a result, contact with the chain is significantly improved, leading to a