Fuel mixture screw: FCR carb. Fits Keihin pumper carburetors (FCR). This part fits all YZ/WR 426F, 250F, 450F bikes, as well as the YFZ quads.It does not fit the YZ and WR 400FS. Compatible with Honda CRF450 and CRF250 (all). They fit the new Kawasaki KX250F and its brother, the Suzuki RMZ 250. Also fits 2003 and newer KTM RFS 4-strokes - 450 and 525. It will not fit 02 and older KTM 400 and 520 bikes.
