Boyesen Reeds GasGas Pro Keihin PowerThe Boyesen Power reeds are all about increasing air velocity. The difference in stiffness between the top and bottom reeds allow the system to respond quickly and accurately to changes in engine pressure. This translates into quicker acceleration, crisper throttle response and increased horsepower throughout the RPM ranges. Bike: Gas Gas Pro Racing Raga Factory GP 250 280 300 06 22Type: Keihin carburetor Boyesen Power reeds: More power and torque