Want to increase horsepower without spending a lot of money? Then try * *Boyesen Power Reeds. Boyesen Power Reeds have an advanced dual stage design * *. The specially shaped top reed is lightweight and resilient for excellent * *throttle response at low RPM. While the stiffer bottom reed is ported for * *maximum flow and horsepower at high RPMs. The Boyesen Pro Series Reeds are * *designed with the latest carbon fiber technology and still feature the dual * *stage design. Pro Series Reeds offer maximum acceleration, horsepower, and * *torque. Last longer than other carbon fiber based reeds.