1994 Polaris 300 2X4 O-Ring Chain And Sprocket Set 520-86L 12 Tooth Front Sprocket, 38 Tooth Rear Sprocket and 520-86L O-Ring Chain All Race-Driven sprockets meet or exceed OEM specifications and use hardened S45C steel. O-Ring Chain helps keep the pins lubricated which reduces friction and helps the chain last longer. Fits 1994 Polaris 300 2X4