For help finding the correct hanger for your bike please see the Wheels Manufacturing Hanger Finder.SRAM COMPATIBLE UNIVERSAL DERAILLEUR HANGER W/ 30mm washerThe new SRAM compatible Universal Derailleur Hanger simplifies thousands of hanger designs into one universal standard. Machined completely out of aluminum, this new hanger is not only strong but designed to rotate backward and slip slightly in the case of an impact preventing chain jams and protecting the drive train. All Wheels Manufacturing replacement derailleur hangers are produced in our Colorado shop to exacting tolerances. Trek ABP (Active Breaking Pivot) mountain bike frames designed to accept the 404 SRAM UDH (Universal Derailleur Hanger W/ 30mm OD washer) Compatible with all MTB and EMTB drivetrains Machined aluminum body Anodized black. Thru Axle Thread Pitch M12x1.0 8mm Hex