Park Tool Frame Alignment Indicator

The FAI-2 is designed to check the alignment between the head tube, seat tube, and rear dropouts. It helps you determine if your frame is twisted or bent, which is critical for ensuring your bike tracks straight and shifts properly.

The FAI-2 features a retractable pointer that makes it highly versatile, fitting almost any frame size or geometry. However, it is primarily intended for standard bicycle frames and may not be compatible with some unique, non-traditional frame designs or e-bikes with bulky battery housings.

While it is a professional-grade tool, it is accessible for dedicated home mechanics. You will need a basic understanding of bicycle geometry and patience, as frame alignment is a precise process that requires careful measurement and interpretation.

This is strictly a diagnostic tool used to measure and identify alignment issues. It does not provide the leverage or force required to bend a frame back into alignment; you would need additional frame-straightening tools for that type of repair.

The tool is built from black, anodized aluminum, which is chosen for its balance of lightweight handling and long-term durability. It is designed to withstand the rigors of a busy workshop environment while maintaining the precision needed for accurate measurements.