Bicycle Bike Derailleur Hanger Derailleur Bracket Bike Tail Hook Frame Gear Tail Hook Aluminium Alloy Mountain Rear for Cyclocross, Mountain, Road Racing Bike - 2 Pack 131763303 Disconnect power to the garage

Disconnect power to the garage door opener before installation

You will need to remove a high-tension outer wire clamp and an inner tub clamp

which suffocates the motor

Take a photo of the belt's configuration around the old pulley and motor shaft for reference

snap-in-place installation

Bicycle Bike Derailleur Hanger Derailleur Bracket Bike Tail Hook Frame Gear Tail Hook Aluminium Alloy Mountain Rear for Cyclocross, Mountain, Road Racing Bike - 2 Pack 131763303 Disconnect power to the garageAluminum Alloy Bicycle Derailleur Hanger Pack of 2 Key Features Sacrificial Design: Engineered to bend or break before your expensive bike frame or rear derailleur is damaged during an impact, acting as a "mechanical fuse" for your drivetrain. Precision CNC Machining: Manufactured from 6061 aluminum alloy to provide the perfect balance of rigidity for crisp shifting and malleability for frame protection. Universal Compatibility: Designed to fit a wide