Boyesen's patented dual-stage reed design incorporates a specially shaped top reed and a ported bottom reed. The top reed is lightweight and resilient for crisp throttle response at partial throttle or low RPMs. The stiffer, bottom reed is ported to provide maximum flow and horsepower at higher RPMs.
Fits: Honda CR80R 1987-2002 CR80RB 1997-2002 CR85R 2008 CR85R Big Wheel 2003-2007 CR85R Small Wheel 2003-2007