Definition
Fitment is the process of matching a sprocket to the bike's physical dimensions and application before it is produced or ordered.
Knowledge base
Motorcycle sprocket fitment
Fitment checks chain pitch, hub or spline interface, bolt circle, offset, center bore, and model year. A part can have the right tooth count and still fail fitment.
Practical use
Use fitment data to confirm the correct front or rear part, especially when the model has changed across years or market variants.
Material notes
Material choice matters after fitment is confirmed. It does not fix an offset, bolt pattern, or pitch mismatch.
Common mistakes
- Ordering by brand name alone.
- Ignoring year changes or regional variants.
- Confusing front and rear fitment rules or mixing 428 and 520 chains.
When to contact Langbiang Gravity
Contact the team when a bike is modified, converted, or part of a fleet where year and trim differences need a verified answer.