Fuel Mixture Screw for FCR Carbs allows quick and easy adjustment without tools making it convenient for adjustments during track or trail use. Product Details: Qty: 1x Fuel Mixture Screw Material: 6061-T6 Aluminum CNC machined screw for FCR carburetors design helps secure adjustment settings Numerically calibrated for tuning memory Includes spring washer and Anodized finish Fitment: Fits all FCR & FCR-MX Carburetors compatible with a range of 4-stroke models.The following list provides example applications: Make Model Year Various CRF150R/CRF150RB 2007-2020 Various CRF250R 2004-2009 Various CRF250X 2004-2009 Various CRF450R 2002-2008 Various CRF450X 2005-2009 Various KLX450R 2008-2009 Various KX250F 2004-2010 2006-2008 Various 250 EXC 4-Stroke 2003-2005 Various 250 SX-F 2005-2010 Various 250 XC-F 2007-2009 Various 250 XCF-W 2007-2011 Various 400 EXC 2000-2007 Various 400 XC-W 2007 2009-2010 Various 450 EXC 4-Stroke 2003-2007 Various 450 EXC-R 2008-2011 Various 450 MXC 4-Stroke 2003-2005 Various 450 SX 20 2009-2010 Various 450 SX 4-Stroke 2003-2006 Various 450 SX-F 2007-2011 Various 450 XC 2008-2010 Various 450 XC-F 2006-2009 Various 450 XC-W 2007-2011 Various 505 SX 2009-2010 Various 505 SX-F 2007-2008 Various 505 XC-F 2008-2009 Various 520 EXC 2000-2001 Various 525 EXC 4-Stroke 2003-2007 Various 525 MXC 4-Stroke 2003-2005 Various 525 SX 4-Stroke 2003-2006 Various 525 XC 2008-2010 Various 525 XC-F 2006-2007 Various 525 XC-W 2007 Various 530 EXC-R 2008-2011 Various 530 XC-W 2008-2011 Various 660 RALLYE 2001-2005 Various OUTLAW 450 MXR 2008-2010 Various OUTLAW 525 IRS 2007-2011 Various OUTLAW 525 S 2008-2010 Various WR250F 2001-2009 2011 Various WR426F 2001-2002 Various WR450F 2003-2009 2011 Various A YFZ 450 2004-2009 Various YZ250F 2001-2011 Various YZ426F 2000-2002 Various YZ450F 2003-2009 Compatibility Disclaimer: This is an aftermarket replacement part.Any brand names or model designations mentioned are used solely for the purpose of demonstrating compatibility.