as of 11/30/2021 (Details)
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
- 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.