Wheels Manufacturing Wheels Manufacturing Universal Derailleur Hanger - 487, For Trek ABP MTB Frames designed to accept SRAM UDH, Black - The Squeaky Wheel Bike Shop | Palmdale, CA
Trek ABP/Rear Axle Assembly (with Derailleur Hanger) | 3D CAD Model Library | GrabCAD
Trek M12x1.25x17mm Bolt (Non Drive Side) for ABP Race Systems - W307719 - black
Conversion Kit For Trek ABP 142 x 12 Dropout Hardware with Derailleur Hanger | eBay