Carlisle Ultimax 3 has evolved into Ultimax PRO. Thicker cross section so more surface area is in contact with clutch. New cog design dissipates heat and aids flexibility Runs cooler for better performance. Run cool, run long & run fast with Ultimax PROAdditonal Fitment:2006-2006 ARCTIC CAT M7 EFI LIMITED2006-2006 ARCTIC CAT CROSSFIRE 600 EFI2005-2006 ARCTIC CAT M6 EFI2006-2006 ARCTIC CAT M72006-2006 ARCTIC CAT M5 EFI2006-2006 ARCTIC CAT CROSSFIRE 600 EFI SNO PRO2005-2005 ARCTIC CAT M52005-2006 ARCTIC CAT M7 EFI2006-2006 ARCTIC CAT CROSSFIRE 700 EFI EB2006-2006 ARCTIC CAT CROSSFIRE 700 EFI2006-2006 ARCTIC CAT CROSSFIRE 700 EFI SNO PRO2005-2005 ARCTIC CAT M7 EFI LE