Our 9" Big Wheel Billet Axle kits eliminate more rolling resistance and give a wicked look to your Summit or Freeride, Backcountry models in the XP, XM, & REV GEN4 chassis sleds. This kit is for sleds that had 8" wheels from the factory which is 2015-2020 SUMMIT, FREERIDE, Backcountry & SOME RENEGADE MODELS. The billet TKI axle is the best in the biz and the Avid Wheels are top notch. We offer this in a 2 or 4 wheel version. The flatlanders like the 4 wheel kit and can pop the two outer wheels off and throw them in the trunk for powder riding and the center wheels stay tight. This a complete bolt-on and installs in 30 minutes. The 2 wheel kit has a billet 2 wheel billet axle and 2 Avid 9" wheels. The 4 wheel kit has a 4 wheel billet axle and 4 Avid Wheels with the ability to convert to 2 wheel in two minutes. The 4 wheel kit is pictured on a 2015 Summit with T-Motion. This kit fits multiple models and before ordering check your original wheel size and the width of the adjuster slot in your factory rail. Some GEN4 models have .800", and some are .500". All of our axles come in black anodize for corrosion protection.