North Shore Billet Trek ABP Convert 10x135 Derailleur Hanger All hangers are CNC machined from 6061 T6 Aluminum for strength and stiffness beyond OEM hangers Protective anodized pewter finish 2011-12 Trek Rumblefish 1 & 2 with QR x 135 rear axle 2011-13 Trek Fuel EX Carbon & Aluminum with QR x 135 rear axle 2011-13 Trek Remedy Carbon & Aluminum with QR x 135 rear axle