Moto Tassinari VForce4R V4R26 Reed Valve HUSQVARNA & KTM 125 / 150 / 250 / 300

The all-new Moto Tassinari VForce4R for the 2017 KTM and Husqvarna 250/300 has been designed to offer you exceptional durability and overcome the shortcomings of the stock reed valve 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 VFORCE 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 rapid reed petal changes

IMPROVED VFORCE4 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 VFORCE4R FEATURES
Rubber overmodling on reed tip surface of cage to further enhance petal life
All-new manifold, reed cage and air guide designed for the VFVorce4R

FITMENT:

KTM MODELS:
2017 KTM 300 XC | 2017 KTM 300 XC-W | 2017 KTM 250 XC | 2017 KTM 250 XC-W | 2017 KTM 150 XC-W | 2017 KTM 250 SX | 2016-17 KTM 150 SX | 2016-17 KTM 125 SX

HUSQVARNA MODELS:
2017 HUSQVARNA TX 300 | 2017 HUSQVARNA TE 300 | 2017 HUSQVARNA TE 250 | 2017 HUSQVARNA TE 150 | 2017 HUSQVARNA TC 250 | 2016-17 HUSQVARNA TC 125 | 2017 HUSQVARNA TX 125