The Surly My Other Brother Darryl is an 80mm-wide fat bike rim built for stability, flotation, and strength on challenging terrain. With a welded seam and double-wall construction, it’s tough enough for expedition use while still being tubeless-ready for modern setups. Designed for 26" fat tires, this rim comes in both 32-hole and 64-hole versions, offering options for standard or extra-strong builds. Whether you're riding deep snow or loose sand, this rim helps keep you rolling smoothly and confidently.