TKI CNC - TOM KOBZA INC- AIRCRAFT GRADE 6061 BILLET OFFSET AXLE FOR 10" REAR IDLERS- (NOW ANODIZED BLACK ONLY). These are the highest quality, strongest axles in existence. We offer them in black anodized only and they complement the 10" Billet TKI CNC wheels we list here also. These include billet rail adapters for SKI-DOO Xp, Xs, Xm, and REV GEN4 and Polaris and Arctic Cat rails to 2015 also. These fit the Summit models from 2008-2019 … all others do your research. These are noW hard anodized black and thus the cost is $10 more than raw aluminum. Sold as one black anodized axle kit-order wheels separately. ADAPTERS INCLUDED FOR POLARIS, ARCTIC CAT, AND SKI-DOO RAILS.