Description
✨Moto Tassinari VForce4R V4R82A-I Reed Valve Yamaha YZ85 2002–2026
The VForce4R reed valve system V4R82A-I is engineered to maximize airflow, throttle response, and power delivery for the Yamaha YZ85 two-stroke engine. Designed for motocross racing and high-performance trail riding, this carbon fiber reed valve system improves intake efficiency by increasing reed tip area and optimizing airflow velocity. The result is stronger low-end torque, improved mid-range response, and increased top-end horsepower for aggressive riding conditions.
Built with advanced carbon fiber reed petals and a wider reed cage, the VForce4R reed valve system enhances durability while maintaining precise sealing at high RPM. The custom intake manifold boot included with the VForce4Ri configuration provides a straighter airflow path, improving throttle response and engine efficiency. Designed for riders who demand consistent performance and long service life, the VForce4R reed valve system is a proven upgrade for race and performance-focused YZ85 builds.
❇️ Key Features
- Carbon fiber reed petals for strength, flexibility, and durability
- Pre-curved reed petals for improved sealing and smoother power delivery
- Wider reed cage with 10.5% larger reed tip area for increased airflow
- Airfoil and central wing design improves air velocity by 15.6%
- Extended reed stops and rubber overmolding to reduce wear
- Includes custom intake manifold boot for straighter airflow path
✅ Vehicle Fitment
- 2002–2026 | Yamaha | YZ85
❇️ Frequently Asked Questions
Q: How does the VForce4R reed valve improve performance?
It increases airflow efficiency and throttle response, resulting in improved horsepower, torque, and smoother power delivery.
Q: Is installation difficult?
No, the VForce4R reed valve system is designed as a direct-fit upgrade for Yamaha YZ85 models.
Q: Is this suitable for racing use?
Yes, it is designed for motocross racing and high-performance riding applications.
🚀 Upgrade your Yamaha YZ85 with a precision-engineered reed valve system designed to improve airflow efficiency, throttle response, and long-term durability for competitive riding and demanding track conditions.
Moto-House MX – Choice of Champions – is located in Clermont/Montverde, FL. The best motocross shop in Central Florida.
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