Slient Bottom Sprocket for Arctic Cat 2012-13 - 48T, 34T Spline, 13 Wide For 2012 Arctic Cat ProCross XF 800 Sno Pro Snowmobile Manufactured at sISO 9902 certified facility using the latest technologyMade with heat-treated, case-hardened machine steelHigh-quality construction means gears have proper fitment and maximum efficiencyLightweight with superior strengthOrder chain width to match sprocket width Slient Bottom Sprocket for Arctic Cat 2012-13 - 48T, 34T Spline, 13 WideSlient Bottom Sprocket for Arctic Cat 2012-13 - 48T, 34T Spline, 13 Wide