2006-2008 Polaris Snowmobiles FS/FST Service Manual., Page 172Get this manual
Final Drive and Brake Systems GEAR AND DRIVE TRAIN
Optional Parts
A selection of gears and drive chains are available to lower or raise the final drive gear ratio
8.42CD Chaincase Gears
PART NUMBER DESCRIPTION
3221183 3221143 3222133 3222136 3222128 3221180 3222118 3222116 3222117 3221184 3222137 3221181 3221189 3221186 3221190 3221191