Renthal 520-45P 150U-520-45GBSI Rear Chainwheel, Silver

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 150U-520-45GBSI UltraLight Rear Chainwheel is a CNC-machined aluminum rear sprocket designed for powersports applications. It is manufactured from 7075 T6 aluminum and engineered for precise fitment, concentricity, and load dispersion. Its tooth profiling is designed to support efficient power transfer.

This silver rear chainwheel is listed with 45 teeth and is designed for 520 chain applications. Renthal states that its UltraLight rear chainwheels are 66% lighter than steel, while the high-strength base material and hardwearing surface treatment support durability in demanding riding conditions.

Fitment includes the 2009–2011 Yamaha WR250F, 2009–2011 Yamaha WR450F, 2009–2011 Yamaha YZ250F, and 2009–2011 Yamaha YZ450F, as specified by the manufacturer. Manufacturer part number: 150U-520-45GBSI. Vendor part number: 150U-520-45GBSI.

Features:

• Brand: Renthal
• Product Type: UltraLight rear chainwheel
• Material: CNC-machined 7075 T6 aluminum
• Chain Size: 520
• Tooth Count: 45
• Finish: Silver
• Design: Grooved rear sprocket with tooth profiling for power transfer
• Construction: Engineered for precise fitment, concentricity, and load dispersion
• Weight Advantage: Stated to be 66% lighter than steel
• Fitment: 2009–2011 Yamaha WR250F, WR450F, YZ250F, and YZ450F
• Manufacturer Part Number: 150U-520-45GBSI
• Vendor Part Number: 150U-520-45GBSI

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:
1999 Yamaha WR400F Base
1999 Yamaha YZ125 Base
1999 Yamaha YZ250 Base
1999 Yamaha YZ400F Base
2000 Yamaha WR400F Base
2000 Yamaha YZ125 Base
2000 Yamaha YZ250 Base
2000 Yamaha YZ426F Base
2001 Yamaha WR250F Base
2001 Yamaha WR426F Base
2001 Yamaha YZ125 Base
2001 Yamaha YZ250 Base
2001 Yamaha YZ250F Base
2001 Yamaha YZ426F Base
2002 Yamaha WR250F Base
2002 Yamaha WR426F Base
2002 Yamaha YZ125 Base
2002 Yamaha YZ250 Base
2002 Yamaha YZ250F Base
2002 Yamaha YZ426F Base
2003 Yamaha WR250F Base
2003 Yamaha WR450F Base
2003 Yamaha YZ125 Base
2003 Yamaha YZ250 Base
2003 Yamaha YZ250F Base
2003 Yamaha YZ450F Base
2004 Yamaha WR250F Base
2004 Yamaha WR450F Base
2004 Yamaha YZ125 Base
2004 Yamaha YZ250 Base
2004 Yamaha YZ250F Base
2004 Yamaha YZ450F Base
2005 Yamaha WR250F Base
2005 Yamaha WR450F Base
2005 Yamaha YZ125 Base
2005 Yamaha YZ250 Base
2005 Yamaha YZ250F Base
2005 Yamaha YZ450F Base
2006 Yamaha WR250F Base
2006 Yamaha WR450F Base
2006 Yamaha YZ125 Base
2006 Yamaha YZ250 Base
2006 Yamaha YZ250F Base
2006 Yamaha YZ450F Base
2007 Yamaha WR250F Base
2007 Yamaha WR450F Base
2007 Yamaha YZ125 Base
2007 Yamaha YZ250 Base
2007 Yamaha YZ250F Base
2007 Yamaha YZ450F Base
2008 Yamaha WR250F Base
2008 Yamaha WR450F Base
2008 Yamaha YZ125 Base
2008 Yamaha YZ250 Base
2008 Yamaha YZ250F Base
2008 Yamaha YZ450F Base
2009 Yamaha WR250F Base
2009 Yamaha WR450F Base
2009 Yamaha YZ125 Base
2009 Yamaha YZ250 Base
2009 Yamaha YZ250F Base
2009 Yamaha YZ450F Base
2010 Yamaha WR250F Base
2010 Yamaha WR450F Base
2010 Yamaha YZ125 Base
2010 Yamaha YZ250 Base
2010 Yamaha YZ250F Base
2010 Yamaha YZ450F Base
2011 Yamaha WR250F Base
2011 Yamaha WR450F Base
2011 Yamaha YZ125 Base
2011 Yamaha YZ250 Base
2011 Yamaha YZ250F Base
2011 Yamaha YZ450F Base
2012 Yamaha WR250F Base
2012 Yamaha WR450F Base
2012 Yamaha YZ125 Base
2012 Yamaha YZ250 Base
2012 Yamaha YZ250F Base
2012 Yamaha YZ450F Base
2013 Yamaha WR250F Base
2013 Yamaha WR450F Base
2013 Yamaha YZ125 Base
2013 Yamaha YZ250 Base
2013 Yamaha YZ250F Base
2013 Yamaha YZ450F Base
2014 Yamaha WR250F Base
2014 Yamaha WR450F Base
2014 Yamaha YZ125 Base
2014 Yamaha YZ250 Base
2014 Yamaha YZ250F Base
2014 Yamaha YZ450F Base
2015 Yamaha WR250F Base
2015 Yamaha WR450F Base
2015 Yamaha YZ125 Base
2015 Yamaha YZ250 Base
2015 Yamaha YZ250F Base
2015 Yamaha YZ250FX Base
2015 Yamaha YZ450F Base
2016 Yamaha WR250F Base
2016 Yamaha WR450F Base
2016 Yamaha YZ125 Base
2016 Yamaha YZ250 Base
2016 Yamaha YZ250F Base
2016 Yamaha YZ250FX Base
2016 Yamaha YZ250X Base
2016 Yamaha YZ450F Base
2016 Yamaha YZ450FX Base
2017 Yamaha WR250F Base
2017 Yamaha WR450F Base
2017 Yamaha YZ125 Base
2017 Yamaha YZ250 Base
2017 Yamaha YZ250F Base
2017 Yamaha YZ250FX Base
2017 Yamaha YZ250X Base
2017 Yamaha YZ450F Base
2017 Yamaha YZ450FX Base
2018 Yamaha WR250F Base
2018 Yamaha WR450F Base
2018 Yamaha YZ125 Base
2018 Yamaha YZ250 Base
2018 Yamaha YZ250F Base
2018 Yamaha YZ250FX Base
2018 Yamaha YZ250X Base
2018 Yamaha YZ450F Base
2018 Yamaha YZ450FX Base
2019 Yamaha WR250F Base
2019 Yamaha WR450F Base
2019 Yamaha YZ125 Base
2019 Yamaha YZ250 Base
2019 Yamaha YZ250F Base
2019 Yamaha YZ250FX Base
2019 Yamaha YZ250X Base
2019 Yamaha YZ450F Base
2019 Yamaha YZ450FX Base
2020 Yamaha WR250F Base
2020 Yamaha WR450F Base
2020 Yamaha YZ125 Base
2020 Yamaha YZ125X Base
2020 Yamaha YZ250 Base
2020 Yamaha YZ250F Base
2020 Yamaha YZ250FX Base
2020 Yamaha YZ250X Base
2020 Yamaha YZ450F Base
2020 Yamaha YZ450FX Base
2021 Yamaha WR250F Base
2021 Yamaha WR450F Base
2021 Yamaha YZ125 Base
2021 Yamaha YZ125X Base
2021 Yamaha YZ250 Base
2021 Yamaha YZ250F Base
2021 Yamaha YZ250FX Base
2021 Yamaha YZ250X Base
2021 Yamaha YZ450F Base
2021 Yamaha YZ450FX Base