Renthal Ultralight Aluminum Rear Sprocket Silver 49 Tooth (150U-520-49GBSI)
- 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 |
| 2001-2009 | Yamaha | WR250F | |
| 2011-2013 | Yamaha | WR250F | |
| 2015-2023 | Yamaha | WR250F | |
| 1999-2000 | Yamaha | WR400F | |
| 2001-2002 | Yamaha | WR426F | |
| 2003-2009 | Yamaha | WR450F | |
| 2011-2022 | Yamaha | WR450F | |
| 1999-2022 | Yamaha | YZ125 | |
| 2022 | Yamaha | YZ125 Monster Energy Yamaha Racing Edition | |
| 2020-2022 | Yamaha | YZ125X | |
| 1999-2022 | Yamaha | YZ250 | |
| 2022 | Yamaha | YZ250 Monster Energy Yamaha Racing Edition | |
| 2001-2023 | Yamaha | YZ250F | |
| 2021-2022 | Yamaha | YZ250F Monster Energy Yamaha Racing Edition | |
| 2015-2022 | Yamaha | YZ250FX | |
| 2016-2022 | Yamaha | YZ250X | |
| 1999 | Yamaha | YZ400F | |
| 2000-2002 | Yamaha | YZ426F | |
| 2003-2023 | Yamaha | YZ450F | |
| 2021-2022 | Yamaha | YZ450F Monster Energy Yamaha Racing Edition | |
| 2016-2021 | Yamaha | YZ450FX | |