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VForce 4R reed valve for Beta 125RR, 250RR, 300RR, showing cage and petal design

Vforce Reed Valve - Beta

ab
156,99 £ Standardpreis
149,15 £Sale-Preis

SAVE 5% VForce

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.

    Fitment
    125RR 2021-Onwards
    250RR 2021-Onwards
    300RR 2021-Onwards
    • Fitment

      Fitment Part#

      Beta 125RR

      2021- Onwards

      V4R26

      (Vforce 4R)

      Beta 250RR

      2021-Onwards

      V417A

      (Vforce 4)

      Beta 300RR 

      2021-Onwards

      V417A

      (Vforce 4)

       

    • Description

      VFORCE 3 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

       

      IMPROVED VFORCE 4 FEATURES

      • All-new reed petal resin system, carbon fibre 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

       

      ALL-NEW VFORCE 4R FEATURES

      • Rubber overmodeling on reed tip surface of cage to further enhance petal life
      • Extended reed petal stops
      • Pre-curved reed petal ensures better seal at tip
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