Wheels Manufacturing's Universal Derailleur Hanger - 487-9, tailored for Trek ABP MTB frames accepting SRAM UDH Black/Green. This SRAM-compatible hanger unifies various designs into one standard. Crafted from aluminum, it's robust and designed to rotate backward, preventing chain jams and protecting the drivetrain. Produced in Colorado with precise tolerances, it's compatible with UDH-ready frames and all MTB/eMTB drivetrains. Features an anodized black aluminum body and M12 x 1 thru-axle thread pitch. Fits Trek frames with UDH compatibility.