Moto Tassinari VForce4 Reed Valve - V4R85A - KTM 85SX, Husqvarna TC85, and Gas Gas MC 85

Moto Tassinari VForce4 Reed Valve - V4R85A - 2003-2024 KTM 85SX, 2014-2024 Husqvarna TC85, and 2022-2024 Gas Gas MC 85

Experience unparalleled performance and reliability with the Moto Tassinari VForce4 reed valve system. Designed for modern 2-stroke motocross bikes, this innovative system increases horsepower and torque by doubling the reed tip surface over OEM designs. No matter if your engine operates at 8,000 RPM or higher, trust VForce4 to provide the durability and performance you need.

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 per-curved reed petals designed to ensure superior reliability and maximum performance.

KTM 85 SX, Husqvarna TC 85, and Gas Gas MC 85:

• 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   Rubber overmodling on reed tip surface of cage to further enhance petal life
• Pre-curved reed petal ensures better seal at tip
• KTM 2003-2024 85 SX, Husqvarna 2014-2024 TC 85, and Gas Gas MC 85

Click to see all the other performance parts for your KTM 85 SX

Click to see all the other performance parts for your Husqvarna