Abbey Bike Tools

PreHag Hanger Alignment Gauge

The Abbey Bike Tools PreHag Hanger Alignment Gauge is the quick, no-nonsense way to check derailleur hanger alignment without ever pulling the rear wheel. Designed for mechanics who value efficiency and accuracy, this clever tool presses directly onto the largest cog to give an instant visual on whether the hanger needs adjustment. It’s a fast, precise check that can save a lot of shifting headaches later.

Built with the same attention to detail that’s made Abbey Bike Tools a favorite in pro shops worldwide, the PreHag is made in Bend, Oregon and built to handle daily use. Whether it’s a pre-ride check or part of a full tune-up, this compact gauge helps keep drivetrains running perfectly straight.

Key Features:

• Quickly gauges derailleur hanger alignment without removing the rear wheel
• Presses onto the largest cog for an instant and reliable reference
• Speeds up diagnostic work for mechanics and serious home tuners
• Precision-made in Bend, Oregon, USA
• Durable, shop-grade construction built for daily professional use

For riders or mechanics who demand accuracy and time savings, the Abbey Bike Tools PreHag is a simple solution that delivers pro-level alignment checks in seconds.