VFORCE/MOTO TASSINARI - V4144-2 - V-Force 4 Reed Valve Set - Yamaha
Two-stroke power starts with intake efficiency, and the reed valve is the component that controls how aggressively and cleanly your engine draws in the air-fuel charge. The VFORCE/MOTO TASSINARI V4144-2 is a precision-engineered reed valve system for Yamaha engines that improves upon OEM performance through better airflow geometry, more durable materials, and an elimination of the mechanical weak points that cause OEM reeds to fail. 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. Base Color: Black. For riders who want cleaner throttle response and more peak power, upgrading to the V4144-2 is one of the most effective engine modifications available for a two-stroke.
Features
- 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
- Combined reed tip area increased by 10.5%, resulting in increased total airflow
- Rubber overmolding on reed tip surface of cage to further enhance petal life
- Airfoil shape added to cage tip to increase air velocity from outer ports
- All-new manifold, reed cage and air guide designed for the VForce4R
- When ordering replacement reeds, order one set per reed cage
- 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
- Made in the USA
Specifications
- Base Color : Black
- Units : Set
- Product Name : Reed Valve
- Riding Style : ATV
- Type : Snap Together
- Model : V-Force 4
- Material : Carbon Fiber
- Color/Finish : Black
- Material : Rubber
Frequently Asked Questions - VFORCE/MOTO TASSINARI - V4144-2 - V-Force 4 Reed Valve Set - Yamaha
How do I know if this part fits my vehicle?
Check the fitment information listed on this page against your exact year, make, model, and (where applicable) trim, engine size, or configuration. If your exact vehicle isn't listed, or you're not sure, use the product chat on this page or contact our support team before ordering - we're glad to help confirm fitment.
What does it mean if a product is listed as universal fit?
Universal fit means the product is designed to work across a range of vehicles, not that it's guaranteed to fit every one. Compare the listed measurements, mounting requirements, and connector or hardware specs against your specific vehicle before ordering, since some installations may need additional hardware or minor fabrication.
Where can I find installation instructions for this product?
General installation notes are provided above where available. For detailed step-by-step instructions, refer to the manufacturer's documentation included with the product, or use the product chat on this page for questions about difficulty, required tools, or whether professional installation is recommended.
What if I have more questions about this product?
Use the product chat on this page for fitment, specs, installation, and compatibility questions, or contact our support team directly for help before you order.
