Renthal Ultralight Aluminum Rear Sprocket Silver 48 Tooth (121U-428-48GPSI)
- 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 | Model | Notes |
| 1989-2001 | Suzuki | RM80 | |
| 2002-2009 | Suzuki | RM85 | |
| 2012 | Suzuki | RM85 | |
| 2015-2021 | Suzuki | RM85 | |
| 2003-2008 | Suzuki | RM85L | |
| 2012 | Suzuki | RM85L | |
| 1993-2001 | Yamaha | YZ80 | |
| 2002-2022 | Yamaha | YZ85 | |
| 2022 | Yamaha | YZ85LW | |