FAI-2 Frame Alignment Indicator

The Park Tool FAG-2 Frame Alignment Indicator is an essential diagnostic tool for checking the symmetry of a bicycle frame after a crash or impact. It measures alignment across three critical points: the head tube, seat tube, and rear dropouts. This ensures the frame is perfectly straight, preventing persistent handling issues, shifting errors, and wheel installation difficulties.

At 39" (99 cm) long, the tool features a sliding dropout indicator that adjusts to fit most bicycle types and sizes. By comparing the distance from the seat tube to each rear dropout, mechanics can pinpoint structural misalignments with precision. This robust tool is a mainstay for professional shops focused on frame repair and quality control.

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