Boyesen's revolutionary dual-stage reed design delivers more usable power than stock. Your original one-stage reed operates most effectively only within a narrow RPM range. Boyesen's one soft reed on top of one firm flow-through reed gives you a wide range of intake control, plus increased intake velocity. Your original reeds can't possibly duplicate that performance.
- Dual stage reeds.
- Minor change give major H.P. improvements.
- Faster opening and closing.
- Greater low pressure (low-throttle) response.
- Greater velocity and flow area.
- Longer overall life.
- No engine damage if broken.
- Carbon pro has new carbon fiber reed for quicker response.