Honda CR125 (1987-2002) V-Force Reed Valve System

Honda CR125 (1987-2002) V-Force Reed Valve System

The VForce4R (VF4R) for the Honda CR125 offers enhanced reed petal longevity along with all the benefits of the unique VForce reed valve design.

Standard VForce Reed Valve Features:

• Double the reed-tip surface area compared to conventional reed valve designs.
• Increased bottom-end power, stronger mid-range, and extended top-end performance.
• Improved efficiency due to reduced reed petal travel.
• More airflow delivers increased horsepower.
• Reduced reed petal wear for enhanced durability.
• Screw-free design eliminates the risk of screws entering the engine.
• Screw-free design allows rapid and easy reed petal replacement.

Improved VF4 Features:

• All-new reed petal resin system with carbon fibre construction and optimised lay-up.
• Pre-curved reed petals for better sealing at the tips.
• Wider reed cage for maximum airflow.
• 10.5% increase in total reed tip surface area for improved airflow.
• Airfoil-shaped cage tips to boost air velocity from outer ports.
• Long reed stops to progressively slow petal tip velocity, increasing durability.
• 15.6% reduction in the frontal area of the central wing, combined with a more aerodynamic design.

All-New VF4R Features:

• Rubber overmoulding on the reed tip surface of the cage to further enhance petal life.
• Pre-curved reed petals for improved sealing at the tips.