Park Tool DAG-2.2 Derailleur Hanger Alignment Gauge - 5-12 Speed

Is there anything more frustrating than a bike that won't shift smoothly? You spend hours cleaning your drivetrain, yet your gears still skip, grind, or refuse to engage properly. It is the ultimate buzzkill when you are out on the trail or the open road, turning a great ride into a mechanical headache.

Ignoring a bent derailleur hanger doesn't just ruin your ride; it can lead to premature wear on your chain and cassette, or worse, cause your derailleur to snap into your spokes. You deserve a bike that performs as well as you do, and that starts with precision Bicycle Tuning.

The Park Tool DAG-2.2 Derailleur Hanger Alignment Gauge is the professional-grade solution for your Bike Maintenance kit. This tool features updated, tighter tolerances for improved accuracy, ensuring your hanger is perfectly aligned every time. Built from heavy-gauge, chrome-plated steel, it is compatible with road and mountain bike cassettes ranging from 5 to 12 speeds. Get your shifting dialed in and get back to the ride.