Boyesen Pro Series Reeds are more responsive than our traditional Power Reeds. The carbon-fiber top reed has an excellent response characteristic that provides even quicker acceleration, stronger throttle response, and more over-rev than our standard Power Reeds. The fiberglass bottom reed provides stability and longer reed life. The Pro Series Reeds are the most potent reed available, delivering improved power, torque and feel like no other after-market reed system on the market.