The V-Force 3 has features not found in any other reed valve on the market. Such as the double contact surface, the adjustable slat stops, the fluxed surface of the slat cage. By doubling the contact surface of the reed end, an opening of the reed of 50% compared to the original is sufficient to obtain an equal flow. A decisive advantage, if we consider that a slat opens and closes 133 times per second at 8000 rpm. The reed works half as much as an original reed, with a huge reduction in wear and longer component life.

Furthermore, a significant improvement in power delivery is achieved across the entire curve, with a significant boost in the medium and low revs. An instantaneous engine response to throttle input is just the beginning of the list of improvements.

The petals of the slats now rest on a radiused surface, which creates a "loading" effect that improves an already lightning-fast acceleration. The new design of the reed cage allows the reed to remain "recessed" in the cage itself, with a shock-absorbing effect on the end of the reed and preventing any type of backflow into the intake duct.
Each V-Force valve is equipped with an adjustable reed stop that allows you to quickly change the reed tension from high to low. This feature allows you to precisely adjust the delivery and the result is sensitive. A low tension helps torque and pull at low rpm, while a high tension improves peak power.

What's new on V-Force 3?

Symmetrical lamellar petals:
VForce3 now uses symmetrical lamella petals. This eliminates the differentiation between internal and external slats.
Speeded up slat change:
VForce3 is the first reed valve with a patented interlocking reed fastening system. No more screws, just a moment to change the slats.
Specific flow for each model
Advanced composite materials for the production of slats:
New carbon fiber and resin construction system, specific for the new VForce3 design
Newly designed slat stops:
Eliminates the need for set screws and reduces the chance of breakage.
Airfoil applied to the slats
Increases the speed of the mixture flow, with optimal atomization.

The image reflects the exact shape of the product.

Yamaha Yz 85 2002 - 2017