Precision-machined 6061 billet aluminium. Allows for easy fuel mixture adjustment.

Fits:

• 2001 – 2014 WR250F
• 2003 – 2011 WR450F
• 2001 – 2013 YZ250F
• 2003 – 2009 YZ450F
• 2004 – 2008 YFZ450 Hypersports