Boyesen 681 Power Reeds

Features

• Boyesen's® patented dual-stage 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
• Allows replacement of stock reed stop with a Rev-Plate which permits the reeds to open freely and function efficiently