Getting started
Tips
Short pointers for checking fit, spec'ing a build, and managing parts.
Look up parts
Type a brand, model, or part number. Specs and standards autofill.
Paste a listing URL
Drop in a marketplace link — we pull the details so you can check fit.
Start with an anchor
Pick a frame first. Other slots suggest parts that fit.
Check compatibility
Compare two parts, or a whole group, for a verdict with confidence.
Edit specs
Wrong value? Click EDIT and re-derive related specs.
Save to parts bin
Store parts once, reuse them across builds and checks.
Ask the mechanic
Tag a bike from your garage for answers grounded in what you own.
Trust, but verify
Double-check critical dimensions — axle spacing, rotor size — before buying.
Workflow
- Look up or paste a part.
- Drop it into a build slot or compatibility check.
- Review conflicts and confidence.
- Edit any wrong specs.
- Save to your bin or garage.