Ultimate XS is designed for high horsepower sleds and delivers strength and dependability never before available Carlisle innovation provides superior performance & longer belt life unsurpassed by any competitive belt Ultimax XS has increased strength and is built with new heat tolerant materials With a revolutionary new compound, extra strong Aramax cord and new manufacturing processes the Ultimax XSruns cooler, longer and faster Extensive lab and field testing have proven that Ultimax XS can withstand the punishment that today"s super-sleds dish out Capture the power with belts by Carlisle Additonal Fitment:2007-2007 ARCTIC CAT CROSSFIRE 8 2006-2006 ARCTIC CAT ZR 900 EFI2006-2006 ARCTIC CAT ZR 900 EFI SNO PRO2007-2007 ARCTIC CAT CROSSFIRE 8 SNO PRO