1994 1995 1996 1997 Polaris Big Boss 400 6X6 400L O-Ring Chain and Sprocket Kit Sprocket Set includes: 11T, 12T, 13T. 22T, 22T, 30T, 30T, 42T sprockets and 520-64L, 520-70L, 520-88L, 520-116L 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 1994-1997 Polaris Big Boss 6x6 400L