MSR 520 Ironman Front Countershaft Sprocket

MSR 520 Ironman Front Countershaft Sprocket

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Product Information

MSR Racing 520 Ironman Front Countershaft Sprocket

  • The optimum combination of strength, weight and durability
  • Front sprockets made from high-grade, shock-resistant tool steel, through-hardened for ultimate toughness
  • Front and rear sprockets guaranteed for 1 year against wear (product registration required)
  • Replace O.E. hardware with ultra-tough Grade 10 Sprockets Bolts (Sold Separate)
  • Used and endorsed by Malcolm Smith
Click Here For 520 Ironman Rear Sprocket
  • Item # 21278

**Closeouts are limited to stock on hand**

FitmentView All

Honda Models

  • CR125R: 2004 - 2007
  • CR250R: 1988 - 2007
  • CR500R: 1988 - 2001
  • CRF250R: 2004 - 2014
  • CRF250X: 2004 - 2009, 2012 - 2013
  • CRF450R: 2002 - 2014
  • CRF450X: 2005 - 2009, 2012 - 2014

Kawasaki Models

  • KLX400: 2003
  • KLX450R: 2008 - 2009
  • KX250: 1999 - 2007
  • KX250F: 2004 - 2014
  • KX450F: 2006 - 2014

KTM Models

  • 125 EXC: 1991 - 2007
  • 125 MX: 1991
  • 125 SX: 1992 - 2009, 2011 - 2012, 2014
  • 144 SX: 2007 - 2008
  • 150 SX: 2009 - 2012, 2014
  • 150 XC: 2010 - 2012, 2014
  • 200 EXC: 1998 - 2005, 2010 - 2011
  • 200 MXC: 1998 - 2003
  • 200 SX: 1998 - 2004
  • 200 XC: 2006 - 2009
  • 200 XC-W: 2006 - 2011, 2014
  • 250 DXC: 1992
  • 250 EXC: 1991 - 2005, 2010 - 2011
  • 250 MX: 1991
  • 250 MXC: 1998 - 2001
  • 250 SX: 1992 - 2012, 2014
  • 250 SX-F: 2005 - 2012, 2014
  • 250 XC: 2006 - 2011, 2014
  • 250 XC-F: 2008 - 2009, 2011, 2014
  • 250 XCF-W: 2007 - 2010, 2014
  • 250 XCF-W Six Days: 2011
  • 250 XC-W: 2006 - 2011, 2014
  • 300 DXC: 1991 - 1992
  • 300 EXC: 1991 - 2006, 2010 - 2011
  • 300 MXC: 1993 - 1994, 1996 - 2004
  • 300 SX: 1992
  • 300 XC: 2006 - 2011, 2014
  • 300 XC-W: 2006 - 2011, 2014
  • 350 EXC-F: 2012, 2014
  • 350 SX-F: 2011 - 2012, 2014
  • 350 XC-F: 2011, 2014
  • 350 XCF-W: 2014
  • 360 MXC: 1997
  • 360 SX: 1996 - 1997
  • 380 EXC: 2000 - 2001
  • 380 SX: 1998 - 2002
  • 400 EXC: 2001
  • 400 LC4: 1995, 1997 - 1998, 2000
  • 400 MXC: 2001
  • 400 SX: 1998, 2000 - 2002
  • 400 XC-W: 2009 - 2010
  • 450 EXC: 2003 - 2008
  • 450 MXC: 2003 - 2005
  • 450 SMR: 2006
  • 450 SX: 2003 - 2007
  • 450 SX-F: 2008 - 2012, 2014
  • 450 XC: 2007
  • 450 XC-F: 2008 - 2009, 2014
  • 450 XC-W: 2012, 2014
  • 450 XC-W Racing: 2009
  • 500 EXC: 2012, 2014
  • 500 XC-W: 2014
  • 505 SX-F: 2007 - 2008
  • 505 XC-F: 2008 - 2009
  • 520 EXC: 2000 - 2002
  • 520 SX: 2000 - 2002
  • 525 EXC: 2003, 2006
  • 525 SX: 2003 - 2006
  • 525 XC: 2006
  • 530 EXC: 2009 - 2011
  • 530 EXC-R: 2008

Suzuki Models

  • DR-Z400: 2000 - 2007
  • DR-Z400E: 2000 - 2007
  • DR-Z400S: 2000 - 2009, 2011 - 2014
  • DR-Z400SM: 2005 - 2009, 2013 - 2014
  • RM250: 1986 - 2008
  • RMX250: 1989 - 1998
  • RM-Z250: 2004 - 2012
  • RM-Z450: 2005 - 2012, 2014

Yamaha Models

  • WR250F: 2001 - 2009, 2011 - 2012
  • WR400F: 1998 - 2000
  • WR426F: 2001 - 2002
  • WR450F: 2003 - 2009, 2011 - 2012, 2014
  • YZ125: 2005 - 2012, 2014
  • YZ250: 1999 - 2012, 2014
  • YZ250F: 2001 - 2012, 2014
  • YZ400F: 1998 - 1999
  • YZ426F: 2000 - 2002

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