The VForce reed valve system by Moto Tassinari has been the reed valve system of choice by anyone serious about two-stroke engine performance for the last 10+ years.
The simple premise of the VForce3 reed valve system is to increase engine power and throttle response by increasing the efficiency over a conventional reed valve design.
The unique design of the VForce reed valve system features double the reed tip surface over a conventional reed valve design.
This has two major benefits: 1) The reed petals only travel half the distance as a conventional reed valve design to get the same airflow.
2) Because the reed petals only need to travel half the distance of that on a conventional reed valve design, there is a greater chance of them being fully opened as well as a better chance of sealing when they are “closed”.