Renthal Ultralight Aluminum Rear Sprocket Silver 47 Tooth (121U-420-47GBSI)
- CNC-machined from a specially enhanced 7075-T6 aluminum alloy
- Machined self-cleaning mud grooves at each tooth to help increase wear resistance
- All rear sprockets are the ultralight design, making them 66% lighter than steel, yet incredibly durable
| Compatible Vehicles | |||
| Years | Make | Model | Notes |
| 2018-2023 | Yamaha | YZ65 | |
| 2020 | Yamaha | YZ85 | |