V-Force V4R26 4R Reed Valve System

The all-new VForce4R for select KTM and Husqvarna 125/250/300 motorcycles has been designed to offer you exceptional durability and overcome the shortcomings of the stock reed valve system.

The all-new 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 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 VFORCE4R FEATURES:

• Rubber overmolding on reed tip surface of cage to further enhance petal life
• All-new manifold, reed cage and air guide designed for the VFVorce4R

WHAT'S INCLUDED WHEN I PURCHASE THE VFORCE4R REED VALVE SYSTEM?

Moto Tassinari and VForce4R decals, detailed installation instructions, complete VForce4R reed valve system (including reed petals) and gasket.

V4R26 Fits the following vehicles:

2016 - 2022 KTM 125 SX
2017 - 2018 KTM 125 EXC
2016 - 2022 KTM 150 SX
2017 - 2020 KTM 150 XC
2017 - 2019 KTM 150 EXC
2020 - 2021 KTM 150 EXC TPI
2017 - 2022 KTM 250 SX
2017 - 2022 KTM 250 XC
2011 - 2023 KTM 250 EXC
2017-2022  KTM 300 XC
2011- 2023 KTM 300 EXC

2016 - 2022 Husqvarna TC125
2016-2022 Husqvarna TC250
2017 - 2022 Husqvarna TE150
2020 Husqvarna TE150i
2016 - 2018 Husqvarna TE250
2018 - 2022 Husqvarna TE250i
2016 - 2018 Husqvarna TE300
2019 - 2022 Husqvarna TE300i
2017 - 2019 Husqvarna TX300

2021-2023 GasGas EC300
2021-2023 GasGas EC250
2021-2022 GasGas MC250
2021-2022 GasGas MC300

2017 - 2018Husaberg TE250
2017 - 2018 Husaberg TE300

V417A Fits the following vehicles:

Beta RR 300 2013-2024
Beta RR 250 2013-2024
Beta XTrainer 2015-2024

KTM 250 EXC 2003-2005
KTM 250 SX 2006-2015
KTM 250 SX 2005-2006
KTM 250 SX 2004-2005
KTM 250 SX 2003-2004
KTM 250 XC 2006-2011
KTM 300 EXC 2003-2005
KTM 300 XC 2006-2011

2014-2016 Husqvarna TC250
2014-2016 Husqvarna TE250
2014-2016 Husqvarna TE300

V-Force (VF4) Replacement Petals

Moto Tassinari continues to test and develop new "recipes" for our carbon fibre used in the VForce3 Reed Valve system. In fact Moto Tassinari specs our own exclusive recipes for all the carbon fibre we use, you can be assured you'll never get "generic" carbon fibre.

Kit includes enough petals and bars for 1 valve.