Moto Tassinari V-Force 4R Reed Valves (YZ 125)
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Moto Tassinari V-Force 4R Reed Valves (YZ 125)

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Your Price: $147.56
Retail Price:$169.95
Your Savings:$22.39(13%)
Part Number: V4R04
Availability: In Stock

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Moto Tassinari V-Force 4R Reed Valves - V4R04

YAMAHA
• YZ 125 2005- >>

The all new VForce4 is built upon the solid foundation that has made the VForce3 such a sucess for the last 10 years. While the VForce3 has been continually refined over the years, this is a complete redesign of the entire system

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 are they receive less wear than the reed petals on a conventional reed valve design.

STANDARD V-FORCE REED VALVE 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

NEW AND IMPROVED V-FORCE 4R FEATURES

  • 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

ALL-NEW V-FORCE 4R FEATURES

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

New Prop. 65 Regulations effective August 30, 2018
Due to the nature of FMF Racing’s products, the new Prop. 65 regulations require that a warning is communicated to customers in advance of their purchase.
To better understand the changes, the definition of Prop 65, found on California’s official Prop 65 website, is as follows:
“Proposition 65 requires businesses to provide warnings to Californians about significant exposures to chemicals that cause cancer, birth defects or other reproductive harm.
These chemicals can be in the products that Californians purchase, in their homes or workplaces, or that are released into the environment. By requiring that this information
be provided, Proposition 65 enables Californians to make informed decisions about their exposures to these chemicals….Proposition 65 became law in November 1986…
The official name of Proposition 65 is the Safe Drinking Water and Toxic Enforcement Act of 1986.”
For more information regarding Prop 65 compliance, please refer to the official California State Prop. 65 website at www.p65warnings.ca.gov.   We encourage consumers
to visit the site to understand the purpose and extent of these new regulations.  Thank you.


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