Drivetrain› Belt and Chain Drive
Renthal
Renthal 02-22 Suzuki RM 85/ 93-18 Yamaha YZ80/YZ 85 Rear Sprocket Grooved - Silver 428-47P Teeth
SKU: R0A9 121U-428-47GPSI
Easy — 1–2 hours
Description
This sprocket features an advanced tooth profile and self-cleaning mud grooves to prevent buildup and increase wear life. Its precise concentricity and accuracy of fit ensure maximum power transfer and longevity.
Fitment
Fitment Guaranteed
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on fit.
Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.
Available on iOS & Android
Specifications
| Brand | Renthal |
| Part Number | R0A9 121U-428-47GPSI |
Buy with Confidence
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
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