With multiple World Championship medals EWS series wins and Olympic gold medals to its namesake the XX Eagle DUB Crank is proven as the pinnacle. Engineered with an ultra-strong but ultra-light design that utilizes carbon fiber with a hollow core crank arms. The new XX SL Eagle Transmission T-Type direct mount chainring updates the look and performance to the next level. Proven DUB bottom bracket interface integrates into a multitude of frame options (BB not included)