Renthal Twinring motocross rear sprocket was developed as the ultimate dirt bike rear sprocket for those looking to ride more and work less. The unique, dual-material design combines a hardened steel outer chain ring that is heated to 200degreeC before being permanently fitted to our Ultralight aluminum inner, creating a permanent bond for the life of the sprocket.
The Renthal Twinring rear sprocket, part number 520-51P, is engineered for riders seeking durability and high performance from their dirt bike drivetrain. Crafted with a unique dual-material construction, this sprocket features a hardened steel outer chain ring that is heated to 200°C and permanently bonded to an ultralight aluminum inner core. This innovative manufacturing process ensures a secure, permanent bond that withstands the rigors of off-road riding. Designed to fit a range of KTM models from 1997 to 2002, including the KTM 620 Duke, 400 Sx, 250 EXC, and others, as well as select Husqvarna models, this sprocket offers reliable power transfer and long-lasting performance.
The Renthal Twinring sprocket is built to endure the demanding conditions of motocross, enduro, and trail riding. Its lightweight aluminum core reduces unsprung weight, enhancing handling and acceleration, while the steel outer ring provides the strength needed for aggressive riding. The silver finish adds a sleek, corrosion-resistant surface that is both functional and visually appealing. This sprocket is ideal for riders who want to maximize their bike’s efficiency and longevity without sacrificing performance.
Easy to install and compatible with various KTM and Husqvarna models, the Renthal Twinring rear sprocket is a smart upgrade for motocross enthusiasts and off-road riders alike. Its robust construction and proven design make it a reliable choice for those who ride more and work less, ensuring optimal power delivery and minimal maintenance over time.
Features:
- Dual-material design: Hardened steel outer ring permanently bonded to ultralight aluminum inner core for durability and lightweight performance
- Heat-treated steel: Outer ring heated to 200°C for a secure, lasting bond
- Compatibility: Fits KTM models from 1997 to 2002 and select Husqvarna bikes
- Corrosion-resistant finish: Silver coating for added durability and aesthetic appeal
- Optimized for motocross and off-road riding: Enhances power transfer and handling
Fits
1990 KTM 250 EXC
1991 KTM 250 EXC
1992 KTM 250 EXC
1993 KTM 125 SX
1993 KTM 250 EXC
1993 KTM 250 SX
1994 KTM 125 SX
1994 KTM 250 EXC
1994 KTM 250 SX
1995 KTM 125 SX
1995 KTM 250 EXC
1995 KTM 250 SX
1995 KTM 300 EXC
1996 KTM 125 SX
1996 KTM 250 EXC
1996 KTM 250 SX
1996 KTM 300 EXC
1997 KTM 125 SX
1997 KTM 250 EXC
1997 KTM 250 SX
1997 KTM 300 EXC
1997 KTM 620 Duke
1998 KTM 125 SX
1998 KTM 250 EXC
1998 KTM 250 SX
1998 KTM 300 EXC
1999 KTM 125 SX
1999 KTM 200 Exc
1999 KTM 250 EXC
1999 KTM 250 SX
1999 KTM 300 EXC
1999 KTM 400 Sx
2000 KTM 125 SX
2000 KTM 200 Exc
2000 KTM 250 EXC
2000 KTM 250 SX
2000 KTM 300 EXC
2000 KTM 400 Exc
2000 KTM 400 Sx
2001 KTM 125 SX
2001 KTM 200 Exc
2001 KTM 250 EXC
2001 KTM 250 SX
2001 KTM 300 EXC
2001 KTM 400 Exc
2001 KTM 400 Mxc
2001 KTM 400 Sx
2002 KTM 125 SX
2002 KTM 200 Exc
2002 KTM 200 Sx
2002 KTM 250 EXC
2002 KTM 250 SX
2002 KTM 300 EXC
2002 KTM 400 Exc
2002 KTM 400 Mxc
2002 KTM 400 Sx
2003 KTM 125 SX
2003 KTM 200 Exc
2003 KTM 200 Sx
2003 KTM 250 EXC
2003 KTM 250 SX
2003 KTM 300 EXC
2003 KTM 400 Exc
2003 KTM 450SX
2003 KTM 525 Mxc
2003 KTM 525 Sx
2004 KTM 125 SX
2004 KTM 200 Exc
2004 KTM 250 EXC
2004 KTM 250 SX
2004 KTM 300 EXC
2004 KTM 450SX
2004 KTM 525 Mxc
2004 KTM 525 Sx
2005 KTM 125 SX
2005 KTM 200 Exc
2005 KTM 250 EXC
2005 KTM 250 SX
2005 KTM 250 SX-F
2005 KTM 300 EXC
2005 KTM 450 SMR
2005 KTM 450SX
2005 KTM 525 Mxc
2005 KTM 525 Sx
2006 KTM 125 SX
2006 KTM 200 Xc
2006 KTM 200 Xc-W
2006 KTM 250 SX
2006 KTM 250 SX-F
2006 KTM 250 XC
2006 KTM 250 XC-W
2006 KTM 250 XCF-W
2006 KTM 300 XC
2006 KTM 300 XC-W
2006 KTM 450 SMR
2006 KTM 450SX
2006 KTM 525 Exc-G
2006 KTM 525 Sx
2007 KTM 125 SX
2007 KTM 144 Sx
2007 KTM 200 Xc
2007 KTM 200 Xc-W
2007 KTM 250 SX
2007 KTM 250 SX-F
2007 KTM 250 XC
2007 KTM 250 XC-F
2007 KTM 250 XC-W
2007 KTM 250 XCF-W
2007 KTM 300 XC
2007 KTM 300 XC-W
2007 KTM 400 Xc-W
2007 KTM 450 SMR
2007 KTM 450 SX-F
2007 KTM 450 XC
2007 KTM 450 XC-W
2007 KTM 505 Sx-F
2008 KTM 125 SX
2008 KTM 144 Sx
2008 KTM 200 Xc
2008 KTM 200 Xc-W
2008 KTM 250 SX
2008 KTM 250 SX-F
2008 KTM 250 XC
2008 KTM 250 XC-F
2008 KTM 250 XC-W
2008 KTM 250 XCF-W
2008 KTM 300 XC
2008 KTM 300 XC-W
2008 KTM 400 Xc-W
2008 KTM 450 EXC
2008 KTM 450 SMR
2008 KTM 450 SX-F
2008 KTM 450 XC-W
2008 KTM 505 Sx-F
2008 KTM 505 Xc-F
2009 KTM 125 SX
2009 KTM 150 SX
2009 KTM 200 Xc
2009 KTM 200 Xc-W
2009 KTM 250 SX
2009 KTM 250 SX-F
2009 KTM 250 XC
2009 KTM 250 XC-F
2009 KTM 250 XC-W
2009 KTM 250 XCF-W
2009 KTM 300 XC
2009 KTM 300 XC-W
2009 KTM 400 Xc-W
2009 KTM 450 EXC
2009 KTM 450 SMR
2009 KTM 450 SX-F
2009 KTM 450 XC-W
2009 KTM 505 Xc-F
2009 KTM 530 Xc-W
2010 KTM 125 SX
2010 KTM 150 SX
2010 KTM 150 XC
2010 KTM 200 Xc-W
2010 KTM 250 SX
2010 KTM 250 SX-F
2010 KTM 250 XC
2010 KTM 250 XC-F
2010 KTM 250 XC-W
2010 KTM 250 XCF-W
2010 KTM 300 XC
2010 KTM 300 XC-W
2010 KTM 400 Xc-W
2010 KTM 450 EXC
2010 KTM 450 SX-F
2010 KTM 450 XC-W
2010 KTM 530 Xc-W
2011 KTM 125 SX
2011 KTM 150 SX
2011 KTM 150 XC
2011 KTM 200 Xc-W
2011 KTM 250 SX
2011 KTM 250 SX-F
2011 KTM 250 XC
2011 KTM 250 XC-F
2011 KTM 250 XC-W
2011 KTM 250 XCF-W
2011 KTM 300 XC
2011 KTM 300 XC-W
2011 KTM 350 SX-F
2011 KTM 450 EXC
2011 KTM 450 SX-F
2011 KTM 450 XC-W
2011 KTM 530 Xc-W
2012 KTM 125 SX
2012 KTM 150 SX
2012 KTM 150 XC
2012 KTM 200 Xc-W
2012 KTM 250 SX
2012 KTM 250 SX-F
2012 KTM 250 XC
2012 KTM 250 XC-F
2012 KTM 250 XC-W
2012 KTM 250 XCF-W
2012 KTM 300 XC
2012 KTM 300 XC-W
2012 KTM 350 SX-F
2012 KTM 350 XC-F
2012 KTM 350 XCF-W
2012 KTM 450 SX-F
2012 KTM 450 XC-W
2012 KTM 500 EXC
2012 KTM 500 XC-W
2013 KTM 125 SX
2013 KTM 150 SX
2013 KTM 150 XC
2013 KTM 200 Xc-W
2013 KTM 250 SX
2013 KTM 250 SX-F
2013 KTM 250 XC
2013 KTM 250 XC-F
2013 KTM 250 XC-W
2013 KTM 250 XCF-W
2013 KTM 300 XC
2013 KTM 300 XC-W
2013 KTM 350 EXC-F
2013 KTM 350 SX-F
2013 KTM 350 XC-F
2013 KTM 350 XCF-W
2013 KTM 450 SX-F
2013 KTM 450 XC-F
2013 KTM 450 XC-W
2013 KTM 500 EXC
2013 KTM 500 XC-W
2014 KTM 125 SX
2014 KTM 150 SX
2014 KTM 150 XC
2014 KTM 200 Xc-W
2014 KTM 250 SX
2014 KTM 250 SX-F
2014 KTM 250 XC
2014 KTM 250 XC-F
2014 KTM 250 XC-W
2014 KTM 250 XCF-W
2014 KTM 300 XC
2014 KTM 300 XC-W
2014 KTM 350 EXC-F
2014 KTM 350 SX-F
2014 KTM 350 XC-F
2014 KTM 350 XCF-W
2014 KTM 450 SX-F
2014 KTM 450 XC-F
2014 KTM 450 XC-W
2014 KTM 500 EXC
2014 KTM 500 XC-W
2015 KTM 125 SX
2015 KTM 150 SX
2015 KTM 200 Xc-W
2015 KTM 250 SX
2015 KTM 250 SX-F
2015 KTM 250 XC
2015 KTM 250 XC-F
2015 KTM 250 XC-W
2015 KTM 250 XCF-W
2015 KTM 300 XC
2015 KTM 300 XC-W
2015 KTM 350 EXC-F
2015 KTM 350 SX-F
2015 KTM 350 XC-F
2015 KTM 350 XCF-W
2015 KTM 450 SX-F
2015 KTM 450 XC-F
2015 KTM 450 XC-W
2015 KTM 500 EXC
2015 KTM 500 XC-W
2016 KTM 125 SX
2016 KTM 150 SX
2016 KTM 200 Xc-W
2016 KTM 250 SX
2016 KTM 250 SX-F
2016 KTM 250 XC
2016 KTM 250 XC-F
2016 KTM 250 XC-W
2016 KTM 250 XCF-W
2016 KTM 300 XC
2016 KTM 300 XC-W
2016 KTM 350 EXC-F
2016 KTM 350 SX-F
2016 KTM 350 XC-F
2016 KTM 350 XCF-W
2016 KTM 450 SX-F
2016 KTM 450 XC-F
2016 KTM 450 XC-W
2016 KTM 500 EXC
2016 KTM 500 XC-W
2017 KTM 125 SX
2017 KTM 150 SX
2017 KTM 250 SX
2017 KTM 250 SX-F
2017 KTM 250 XC
2017 KTM 250 XC-F
2017 KTM 250 XC-W
2017 KTM 300 XC
2017 KTM 300 XC-W
2017 KTM 350 EXC-F
2017 KTM 350 SX-F
2017 KTM 350 XC-F
2017 KTM 450 SX-F
2017 KTM 450 XC-F
2018 KTM 125 SX
2018 KTM 150 SX
2018 KTM 250 SX
2018 KTM 250 SX-F
2018 KTM 250 XC-W
2018 KTM 300 XC-W
2018 KTM 350 EXC-F
2018 KTM 350 SX-F
2018 KTM 450 XC-F
US Dollars
