VForce4Ri reeds box Yamaha YZ 85 93-24

New V-Force 4 carbon reeds box, which replaces the V-Force 3. It considerably increases low-end performance, resulting in more output power for your motorcycle.

The new VForce 4R reeds box has been designed to offer exceptional durability and significantly improve the performance of the original reeds system.

The unique design of the VForce reed valve system features double the reed tip surface area compared to a conventional reed valve design. This has two main benefits:

1) The reed petals only travel half the distance compared to a conventional reed valve design to achieve the same airflow.

2) Because the reed petals only need to travel half the distance as in a conventional reed valve design, there is a greater chance they will open fully, as well as a better chance of sealing when "closed", resulting in more horsepower and a noticeable improvement in throttle response.

This V-Force intake reeds system from Moto Tassinari features a patented, cutting-edge membrane valve design.

The design accelerates the air flow mixture to deliver more horsepower to the engine, with a notable improvement in throttle response and a significant increase in the motorcycle's performance.

This design has more advantages than the stock motorcycles, as the reeds offer a surface area twice as large, so they travel half the distance and achieve the same airflow and fuel flow.

The combination results in explosive acceleration, better throttle response, and greater fuel efficiency.