Renthal 520-45P Rear Grooved Sprocket, 154U-520-45GRSI

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 UltraLight Rear Chainwheel is a CNC-machined rear sprocket made from 7075 T6 aluminum. Its lightweight aluminum construction is designed to reduce rotating mass while maintaining the strength required for powersports applications. Renthal states that the UltraLight design is 66% lighter than steel.

Computer engineering and testing support precise fitment, concentricity, and load dispersion. The tooth profile is designed to support efficient power transfer, while the high-strength base material and hardwearing surface treatments provide durability for demanding riding conditions. The grooved silver finish complements the sprocket’s performance-focused design.

This rear sprocket has 45 teeth and uses a 520 chain size. Manufacturer part number: 154U-520-45GRSI. Vendor part number: 154U-520-45GRSI. Fitment includes 1996–2004 Honda XR250R models and the 1996 Honda XR400R.

Features:

• Brand: Renthal
• Model: UltraLight Rear Chainwheel
• Manufacturer part number: 154U-520-45GRSI
• Vendor part number: 154U-520-45GRSI
• Material: CNC-machined 7075 T6 aluminum
• Chain size: 520
• Tooth count: 45
• Design: Rear grooved sprocket
• Finish: Silver
• Weight design: Renthal states the aluminum sprocket is 66% lighter than steel
• Fitment: 1996–2004 Honda XR250R and 1996 Honda XR400R

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:
1987 Honda CR125R Base
1988 Honda CR125R Base
1988 Honda CR250R Base
1988 Honda CR500R Base
1989 Honda CR125R Base
1989 Honda CR250R Base
1989 Honda CR500R Base
1990 Honda CR125R Base
1990 Honda CR250R Base
1990 Honda CR500R Base
1991 Honda CR125R Base
1991 Honda CR250R Base
1991 Honda CR500R Base
1992 Honda CR125R Base
1992 Honda CR250R Base
1992 Honda CR500R Base
1993 Honda CR125R Base
1993 Honda CR250R Base
1993 Honda CR500R Base
1994 Honda CR125R Base
1994 Honda CR250R Base
1994 Honda CR500R Base
1995 Honda CR125R Base
1995 Honda CR250R Base
1995 Honda CR500R Base
1996 Honda CR125R Base
1996 Honda CR250R Base
1996 Honda CR500R Base
1996 Honda XR250R Base
1996 Honda XR400R Base
1997 Honda CR125R Base
1997 Honda CR250R Base
1997 Honda CR500R Base
1997 Honda XR250R Base
1997 Honda XR400R Base
1998 Honda CR125R Base
1998 Honda CR250R Base
1998 Honda CR500R Base
1998 Honda XR250R Base
1998 Honda XR400R Base
1999 Honda CR125R Base
1999 Honda CR250R Base
1999 Honda CR500R Base
1999 Honda XR250R Base
1999 Honda XR400R Base
2000 Honda CR125R Base
2000 Honda CR250R Base
2000 Honda CR500R Base
2000 Honda XR250R Base
2000 Honda XR400R Base
2000 Honda XR650R Base
2001 Honda CR125R Base
2001 Honda CR250R Base
2001 Honda CR500R Base
2001 Honda XR250R Base
2001 Honda XR400R Base
2001 Honda XR650R Base
2002 Honda CR125R Base
2002 Honda CR250R Base
2002 Honda CRF450R Base
2002 Honda XR250R Base
2002 Honda XR400R Base
2002 Honda XR650R Base
2003 Honda CR125R Base
2003 Honda CR250R Base
2003 Honda CRF450R Base
2003 Honda XR250R Base
2003 Honda XR400R Base
2003 Honda XR650R Base
2004 Honda CR125R Base
2004 Honda CR250R Base
2004 Honda CRF250R Base
2004 Honda CRF250X Base
2004 Honda CRF450R Base
2004 Honda XR250R Base
2004 Honda XR400R Base
2004 Honda XR650R Base
2005 Honda CR125R Base
2005 Honda CR250R Base
2005 Honda CRF150F Base
2005 Honda CRF230F Base
2005 Honda CRF250R Base
2005 Honda CRF250X Base
2005 Honda CRF450R Base
2005 Honda CRF450X Base
2005 Honda XR650R Base
2006 Honda CR125R Base
2006 Honda CR250R Base
2006 Honda CRF150F Base
2006 Honda CRF230F Base
2006 Honda CRF250R Base
2006 Honda CRF250X Base
2006 Honda CRF450R Base
2006 Honda CRF450X Base
2006 Honda XR650R Base
2007 Honda CR125R Base
2007 Honda CR250R Base
2007 Honda CRF150F Base
2007 Honda CRF230F Base
2007 Honda CRF250R Base
2007 Honda CRF250X Base
2007 Honda CRF450R Base
2007 Honda CRF450X Base
2007 Honda XR650R Base
2008 Honda CRF150F Base
2008 Honda CRF230F Base
2008 Honda CRF250R Base
2008 Honda CRF250X Base
2008 Honda CRF450R Base
2008 Honda CRF450X Base
2009 Honda CRF150F Base
2009 Honda CRF230F Base
2009 Honda CRF250R Base
2009 Honda CRF250X Base
2009 Honda CRF450R Base
2009 Honda CRF450X Base
2010 Honda CRF250R Base
2010 Honda CRF450R Base
2011 Honda CRF250R Base
2011 Honda CRF450R Base
2012 Honda CRF150F Base
2012 Honda CRF230F Base
2012 Honda CRF250R Base
2012 Honda CRF250X Base
2012 Honda CRF450R Base
2012 Honda CRF450X Base
2013 Honda CRF150F Base
2013 Honda CRF230F Base
2013 Honda CRF250R Base
2013 Honda CRF250X Base
2013 Honda CRF450R Base
2013 Honda CRF450X Base
2014 Honda CRF150F Base
2014 Honda CRF230F Base
2014 Honda CRF250R Base
2014 Honda CRF250X Base
2014 Honda CRF450R Base
2014 Honda CRF450X Base
2015 Honda CRF150F Base
2015 Honda CRF230F Base
2015 Honda CRF250R Base
2015 Honda CRF250X Base
2015 Honda CRF450R Base
2015 Honda CRF450X Base
2016 Honda CRF150F Base
2016 Honda CRF230F Base
2016 Honda CRF250R Base
2016 Honda CRF250X Base
2016 Honda CRF450R Base
2016 Honda CRF450X Base
2017 Honda CRF150F Base
2017 Honda CRF230F Base
2017 Honda CRF250R Base
2017 Honda CRF250X Base
2017 Honda CRF450R Base
2017 Honda CRF450X Base
2018 Honda CRF250R Base
2018 Honda CRF450R Base
2018 Honda CRF450X Base
2019 Honda CRF230F Base
2019 Honda CRF250F Base
2019 Honda CRF250R Base
2019 Honda CRF250RX Base
2019 Honda CRF450L Base
2019 Honda CRF450R Base
2019 Honda CRF450RWE Base
2019 Honda CRF450X Base
2020 Honda CRF250F Base
2020 Honda CRF250R Base
2020 Honda CRF250RX Base
2020 Honda CRF450R Base
2020 Honda CRF450RWE Base
2020 Honda CRF450X Base
2021 Honda CRF250F Base
2021 Honda CRF250R Base
2021 Honda CRF250RX Base
2021 Honda CRF450R Base
2021 Honda CRF450RL Base
2021 Honda CRF450RWE Base
2021 Honda CRF450X Base