A bent disc brake rotor can turn a normal ride into constant scraping, pulsing, or brake rub. A rotor truing fork gives you controlled leverage on the bent section so you can nudge the rotor back into line.
When Rotor Truing Helps
Rotor truing helps when the rotor is slightly bent from a crash, transport, wheel removal, or trail impact. Spin the wheel, watch the rotor pass through the caliper, and identify the section that moves toward a pad.
How To Use A Truing Fork
Slide the fork over the bent area and apply light pressure in the opposite direction. Work in tiny corrections. Spin the wheel again after each move. The goal is quiet clearance, not a perfectly laboratory-flat rotor.
When To Replace The Rotor
- The rotor is cracked.
- The braking surface is deeply scored or contaminated.
- The rotor is below minimum thickness.
- The rotor is warped across a wide area, not just bent at one spot.
Why RimWrench Includes It
The same crash that dents an aluminum rim can also tweak a rotor. RimWrench puts a disc brake truing fork on the opposite end so a rider or mechanic can handle two common post-impact fixes with one pocketable tool.