A problem-first bicycle repair site for beginners

A skipping chain, weak brake, recurring flat, or loose part can have several causes. The site begins with what the bicycle is doing, then narrows the system before suggesting a repair path.

Parts that look similar can differ by size, interface, direction, material, or model year. Product pages therefore sit behind compatibility checks and current manufacturer specifications.

Every safety-critical guide includes stop conditions. If the system is damaged, unfamiliar, or still performs poorly after a check, do not ride it; use the current manufacturer instructions or a qualified bicycle mechanic.

Prices and availability can change. A listed product is a comparison starting point, not proof that it fits every bicycle or that it has been personally tested. Any paid relationship is disclosed where it matters.