- Allows replacement of stock reed stop with a Rev-Plate which permits the reeds to open freely and function efficiently
- The top reed is lightweight and resilient for crisp throttle response at partial throttle or low RPMs
- The stiffer, bottom reed is ported to provide maximum flow and horsepower at higher RPMs
- Dual-stage design incorporates a specially shaped top reed and a ported bottom reed
- Increases horsepower for less money
