Ski-doo Rexnard Bottom Sprockets for most Ski-doo 13W For XP, XS, XM, & REV GEN4, GEN5

Precision machined 50mm - 32 spline lighter weight heat treated steel bottom sprockets fit most Ski-doo Xp, XS, XM, REV GEN4,REV GEN5 2008-2026 chassis (most models except ANY with mechanical reverse). These are super tough sprockets made to last and give superior performance with lighter weight! PLEASE NOTE THAT SOME 2021 + REV GEN 4 & GEN5 MODELS WITH MANUAL REVERSE HAVE A DIFFERENT BOTTOM GEAR DESIGN AND THESE WILL NOT FIT! THESE WILL NOT FIT THE 2021 SUMMIT TURBO AS THEY ARE NOW HYVO GEARS AND CHAIN! 2021 BOTTOM GEARS FOR XRS, 900 TURBO, 850 TURBO COMING SOON!