The most effective way to add performance to a Keihin FCR carburetor Integrated Hot Start Assist eliminates problem 4-stroke hot start procedure Tunable leak jet maximizes volume of fuel and duration of fuel spray for all conditions 25 percent more fuel capacity High-volume vertical check valve located in the QS3 for precise, consistent fuel metering Patented design stops bogging and improves throttle response Improved low-end performance Investment cast and finished to precise tolerances Fits ALL Keihin FCR carbs Simple bolt-on installation Fitment: HondaCRF150R • 2007-2009, 2012-2020CRF250R • 2004-2009CRF250X 2004-2009, 2012-2013, 2015-2017CRF450R 2002-2008CRF450X 2005-2009, 2012-2014 KawasakiKLX450R • 2008-2009KX250F 2004-2010KX450F 2006-2008 SuzukiRM-Z250 • 2004-2009RM-Z450 2005-2007 YamahaWR250F • 2001-2009, 2011-2013WR400F • 1998-2000WR426F 2001-2002WR450F 2003-2009, 2011YZ426F 2001-2002
