Renthal 224U-520-49GPBK Ultralight Rear Sprocket - Black - 49T engine-radiators-components Comes with washers and cotter

Comes with washers and cotter pins

and manufacturing processes insure compatibility of the valve springs force and natural frequency with the cam profile

It's susceptible to damage from road debris

Replaces OE 4412475

1988 Polaris Trail Boss 250 2x4

Renthal 224U-520-49GPBK Ultralight Rear Sprocket - Black - 49T engine-radiators-components Comes with washers and cotterMarketing Color: Black Material: Aluminum Sprocket Position: Rear Sprocket Size: 520 Sprocket Teeth: 49 Renthal Ultralight rear chainwheels are manufactured to exteremly tight tolerences from a special material developed to withstand the rigours of Supercross, Motocross and Enduro. The 7075 T6 aluminium alloy rear chainwheels are 66% lighter than steel, yet incredibly durable. Their advanced tooth profile, concentricity and accuracy of fit provide