Main Pilot Slow Jet Needle For Yamaha WR400F WR450F YZ400F YZ426F YZ450F YFZ450
For YAMAHA WR400F 2000. For YAMAHA YZ400F 1998-1999. For YAMAHA YZ426F 2000-2002. For YAMAHA WR450F 2003-2011. For YAMAHA YFZ450 2004-2009. For YAMAHA YZ450F 2003-2009. 1 Jet Needle. 5 Pilot Jets.