Hubs shouldn't have a barrier when it comes to what cassette is installed on them, so we picked up the Industry Nine Shimano Micro Spline Freehub Body to fit to our Torch Hubs. Whether we're looking to run a mixed groupset or are switching grouppos completely, this body saves us lots of cash over buying new wheels. The freehub body works with any Torch hub, repacing the existing freehub body with one that accepts our 12sp Shimano cassettes.