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The new VForce4Ri utilizes a winged air guide that increases air velocity for a dramatic gain in throttle response. Paired with the new winged air guide is a custom intake manifold boot that offers a straighter shot to the intake that greatly enhances both airflow and performance. The VForce4Ri also incorporates carbon fiber reed petals designed to ensure superior reliability and maximum performance.
All "R" models include a rubber overmolded pad on the reed tip area of the reed cage to significantly improve reed petal life.
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". A reed petal never truly "closes" in a classic sense, as it is always in movement. Consider this, an engine operating at 8,000 RPM results in a reed petal opening and closing 133 times in one second. This fact, sheds light on another VForce advantage. Since the petals are only traveling half the distance, they generally last longer as they receive less wear than the reed petals on a conventional reed valve design.
Features:
All "R" models include a rubber overmolded pad on the reed tip area of the reed cage to significantly improve reed petal life.
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". A reed petal never truly "closes" in a classic sense, as it is always in movement. Consider this, an engine operating at 8,000 RPM results in a reed petal opening and closing 133 times in one second. This fact, sheds light on another VForce advantage. Since the petals are only traveling half the distance, they generally last longer as they receive less wear than the reed petals on a conventional reed valve design.
Features:
- Double the reed tip surface over a conventional reed valve design
- Increased bottom end, stronger mid-range and longer top-end
- Greater efficiency due to reduced reed petal travel
- More airflow means more horsepower
- Reduced reed petal wear
- Screw free design eliminates risk of screws going through motor
- Screw free design enables super quick reed petal changes
- All-new reed petal resin system, carbon fiber and lay-up
- Pre-curved reed petal ensures better seal at tip
- Wider reed cage for maximum airflow
- Combined reed tip area increased by 10.5% resulting in increased total air flow
- Airfoil shape added to cage tip to increase air velocity from outer ports
- Long reed stops added to progressively slow petal tip velocity, for increased petal durability
- Reduced frontal area of central wing by 15.6% combined with a more aerodynamic shape
- Yamaha YZ65 2018-2020
Other Part Numbers:
Moto Tassinari #59-67601
Proposition 65
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov
| Make Vehicle | Model | Year |
|---|---|---|
|
2018-2019 Yamaha YZ65 |
YZ65 | 2018-2019 |
Moto Tassinari manufactures the AIR4ORCE adjustable intake system for four-stroke bikes and the VForce reed valve system for two-stroke motorcycles in the United States.
WHAT ARE THE BENEFITS OF VFORCE REEDS?A VForce reed valve system increases bottom-end power while also improving mid-range and top-end performance. It also allows for increased airflow, which results in increased horsepower.
WHY CHOOSE MOTO TASSINARI'S VFORCE REED VALVE SYSTEM?For almost a decade, Moto Tassinari's VForce reed valve system has been the reed valve system of choice for anyone serious about two-stroke engine performance. The VForce3 reed valve system is based on the simple idea that it will make the engine more powerful and the throttle more responsive by making it more efficient than a standard reed valve.
MOTO TASSINARI'S VFORCE REED VALVE SYSTEM DESIGNThe VForce reed valve system's unique design provides twice the reed tip surface of a typical reed valve. This has two significant advantages:
1) The reed petals travel approximately half the distance required by a normal reed valve design to produce the same amount of airflow.
2) Because the reed petals travel only half the distance required by a traditional reed valve design, there is a greater possibility of them being fully opened as well as a greater chance of sealing when they are "closed." A reed petal never completely "closes" in the traditional sense, because it moves all the time and never stops.
The VForce3 also has a completely screw-free design, which means there are no loose screws, or worse, screws that go through your engine and cause damage. Because screws aren't used, reed petal changes can be done very quickly.
VIVID RACING- MOTO TASSINARIVivid Racing includes a wide collection of Moto Tassinari products such as the VForce3R Reed Valve System, VForce2R Replacement Reed Petals, System Arctic Cat, VForce4R Replacement Reed Petals, and Reed Gasket for different models of motorbikes.
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03-13-25 - Florida, United States
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