Renthal 428-47P Rear Sprocket, Model 121U-428-47GPSI, Part Number 121U-428-47GPSI

Renthal UltraLight Rear Chainwheels are CNC machined from 7075 T6 aluminum to extremely tight tolerances, 66% lighter than steel. Computer engineered and tested to ensure a precise fitment, concentricity and load dispersion with tooth profiling to provide maximum power transfer. A combination of high strength base material, cutting edge manufacturing methods and exceptional hardwearing surface treatments its clear to see why Renthal's light weight all aluminum rear sprockets can be found on the rear wheels of many factory race team machines.

The Renthal 121U-428-47GPSI UltraLight rear sprocket is a CNC-machined powersports sprocket made from 7075 T6 aluminum. This rear chainwheel features a grooved silver finish and a 428 chain size with 47 teeth, providing a lightweight alternative to steel sprockets.

Computer engineered and tested for precise fitment, concentricity, and load dispersion, the sprocket uses tooth profiling designed to support power transfer. Its high-strength aluminum base material, manufacturing processes, and hardwearing surface treatment are designed for demanding powersports use.

This Renthal rear sprocket fits 1993–2001 Yamaha YZ80 models and the 1989 Suzuki RM80. Manufacturer part number: 121U-428-47GPSI. Vendor part number: 121U-428-47GPSI.

Features:

• Brand: Renthal
• Model: 121U-428-47GPSI
• Manufacturer part number: 121U-428-47GPSI
• Vendor part number: 121U-428-47GPSI
• Material: CNC-machined 7075 T6 aluminum
• Chain size: 428
• Tooth count: 47
• Finish: Grooved silver
• Design: Computer engineered and tested for precise fitment, concentricity, and load dispersion
• Fitment: 1993–2001 Yamaha YZ80 and 1989 Suzuki RM80

Air Freight Prohibited: false
Not Carb Approved: false
Ltl Freight Required: false
Prop 65: Unknown
Part Type: powersports
Epa: N/A
Carb Acknowledgement Required: false
Regular Stock: t
Units Per Sku: 1
Fitment:
1989 Suzuki RM80 Base
1990 Suzuki RM80 Base
1991 Suzuki RM80 Base
1992 Suzuki RM80 Base
1993 Suzuki RM80 Base
1993 Yamaha YZ80 Base
1994 Suzuki RM80 Base
1994 Yamaha YZ80 Base
1995 Suzuki RM80 Base
1995 Yamaha YZ80 Base
1996 Suzuki RM80 Base
1996 Yamaha YZ80 Base
1997 Suzuki RM80 Base
1997 Yamaha YZ80 Base
1998 Suzuki RM80 Base
1998 Yamaha YZ80 Base
1999 Suzuki RM80 Base
1999 Yamaha YZ80 Base
2000 Suzuki RM80 Base
2000 Yamaha YZ80 Base
2001 Suzuki RM80 Base
2001 Yamaha YZ80 Base
2002 Suzuki RM85 Base
2002 Yamaha YZ85 Base
2003 Suzuki RM85 Base
2003 Suzuki RM85L Base
2003 Yamaha YZ85 Base
2004 Suzuki RM85 Base
2004 Suzuki RM85L Base
2004 Yamaha YZ85 Base
2005 Suzuki RM85 Base
2005 Suzuki RM85L Base
2005 Yamaha YZ85 Base
2006 Suzuki RM85 Base
2006 Suzuki RM85L Base
2006 Yamaha YZ85 Base
2007 Suzuki RM85 Base
2007 Suzuki RM85L Base
2007 Yamaha YZ85 Base
2008 Suzuki RM85 Base
2008 Suzuki RM85L Base
2008 Yamaha YZ85 Base
2009 Suzuki RM85 Base
2009 Yamaha YZ85 Base
2010 Yamaha YZ85 Base
2011 Yamaha YZ85 Base
2012 Suzuki RM85 Base
2012 Suzuki RM85L Base
2012 Yamaha YZ85 Base
2013 Yamaha YZ85 Base
2014 Yamaha YZ85 Base
2015 Suzuki RM85 Base
2015 Yamaha YZ85 Base
2016 Suzuki RM85 Base
2016 Yamaha YZ85 Base
2017 Suzuki RM85 Base
2017 Yamaha YZ85 Base
2018 Suzuki RM85 Base
2018 Yamaha YZ85 Base
2019 Suzuki RM85 Base
2019 Yamaha YZ85 Base
2020 Suzuki RM85 Base
2020 Yamaha YZ85 Base
2021 Suzuki RM85 Base
2021 Yamaha YZ85 Base