Abbey Bike Tools Hanger Alignment Gauge

The derailleur hanger is a critical component of a geared bicycle, and even the best drivetrain can't compensate for poor alignment. With modern drivetrains squeezing 13 cogs into the space once occupied by 8, precision is more important than ever. Abbey Bike Tools has engineered the H.A.G. (Hanger Alignment Gauge) to achieve near-perfect alignment, surpassing all other tools in accuracy and build quality.

Precision-machined to tolerances as low as 0.0063mm—16 times thinner than a human hair—the H.A.G. is compact yet incredibly strong, capable of bending even the most stubborn hangers. Its high adjustability ensures compatibility with all bike types, from full suspension to commuter models. Additionally, with the Abbey Lever Setter, the H.A.G. can also set brake and shift lever height on both road and mountain bikes, making it an essential tool for professional and home mechanics alike.

Replacement parts

Hardware Kit (includes small / large o-rings and a set screw)

Thread Cap

Gauge Stick