FAG-2 Frame Alignment Gauge

Measure and correct the alignment of frame and fork dropouts.

Frame and Fork Dropout Alignment Gauge Set

An alignment gauge is essential for diagnosing and repairing bent or misaligned derailleur hangers, often the source of shifting problems. The DAG-3 features an all-new design, engineered and built to be light, accurate and versatile. The sliding indicator can measure derailleur hanger alignment against bicycle rims from 16-29, and rotates out of the way to clear seat stays, racks, and other obstacles, allowing 360 degree measurement.

Park Tool Derailleur Hanger Alignment Gauge, Silver

Frame Alignment

Park Tool FAG-1 Frame Alignment Tool - Bike Recyclery

Many bicycles will not shift or track properly because the front and rear wheels are not in line with the frame. If these conditions still exist after wheel and derailleur adjustments, the seat stays, chain stays, and rear drop outs of the frame may be misaligned. For years the accepted method to check the alignment of the rear drop-out was to run a string on either side. This method does work to some extent. However, it is not accurate because the measurement is not taken at the drop-out.

Park Tool FAG-2 Frame Alignment Gauge

Parktool Frame Alignment Gauge Fag-2

Park Tool FAG-2 Bike Bicycle Frame Alignment Gauge Dropout Comparison Measuring

Park Tool FAG-2 Frame Alignment Gauge Helps Align Frames Forks & Dropouts - La Paz County Sheriff's Office Dedicated to Service

Building My First Bike Frame

The FAG-2 Frame Alignment Gauge checks the alignment of the rear triangle relative to the headtube.

Park Tool FAG-2 Frame Alignment Gauge

Park FFS-2 Frame & Fork Straightener - Modern Bike