Front Sprocket for Yamaha R1 (2015-2020)
MREV-P-000097Front Sprocket for Yamaha R1 (2015-2020): Heat-treated Chromoly 440 steel for the front sprocket that drives the chain. Select a tooth count, spline profile and chain size that match the bike. When the existing front sprocket teeth are worn, inspect the chain and rear sprocket too.
Front Sprocket for Yamaha R1 (2015-2020) mounts on the gearbox output shaft to drive the chain and transfer power to the rear wheel. R1 2015–2020 has separate front and rear sprocket pages.
What is Chromoly 440 steel used for?
The front sprocket uses CNC-machined, heat-treated Chromoly 440 steel. The front sprocket teeth remain in repeated contact with the chain while riding. Steel is used here to prioritize load and wear resistance. If the old teeth are pointed or unevenly worn, fit a front sprocket with the same tooth count to retain familiar riding characteristics. Also inspect chain and rear sprocket wear so all three components work together consistently.
Selecting tooth count for your riding needs
If you are happy with how the bike rides and are replacing only a worn front sprocket, retain its tooth count to preserve the gearing. To change the bike's response, a larger front sprocket reduces the final drive ratio when the rear sprocket remains unchanged. This model is available with 16 teeth.
Checks before installation
To retain the ratio, provide the current tooth counts of both sprockets. Matching tooth counts do not necessarily mean matching shaft splines. Compare the center bore diameter, spline profile and retaining section to avoid a loose fit or incorrect chainline position.
Compatible vehicle models for Front Sprocket for Yamaha R1 (2015-2020)
Recorded gearing options
Only recorded pitch, position and tooth options are shown. Final-drive changes must be evaluated against the complete front/rear setup; tooth count alone is not treated as a performance claim.