Renthal Ultralight Aluminum Rear Sprocket Black 48 Tooth (150U-520-48GBBK)
- Renthal sprockets are CNC-machined (not stamped) and feature a computer-aided "Ultra light" design to reduce unsprung weight and increase power transfer
- Rear sprockets are made from high-strength, specially enhanced 7075 T-6 aluminum - 33% lighter than steel - to further reduce weight and increase power transfer without sacrificing strength
- Rear sprockets also feature special tooth profile that allows the chain to roll easily on and off the sprocket for longer wear, less noise and more power
- All Renthal rear sprockets are hard anodized
| Compatible Vehicles | |||
| Years | Make | Make | Notes |
| 2001-2009 | Yamaha | WR250F | |
| 2011-2013 | Yamaha | WR250F | |
| 2015-2022 | 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 | |
| 2001-2022 | 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 | |
| 2003-2022 | Yamaha | YZ450F | |
| 2021-2022 | Yamaha | YZ450F Monster Energy Yamaha Racing Edition | |
| 2016-2021 | Yamaha | YZ450FX | |