Radio's breakthrough MTB freecoaster hub featuring exclusive Wethepeople "HYBRID" internals. The Sonar delivers zero drag performance with a fully adjustable slack system and "MagnaDrive" magnetic pawl retention—requiring virtually no maintenance. Weighs 33% less than traditional clutch-style freecoasters while offering the durability of a cassette hub. Fully convertible to a standard cassette hub with no additional parts needed. Built over 4 years with Radio MTB team rider Niklas Tilk, this 135mm hub features 6-bolt disc mount, sealed stainless bearings, and 32h spoke count. Available with 10t one-piece or 12t HG cog drivers. 457g (12t). Game-changing innovation for modern MTB.