The VForce4 is built upon the solid foundation that made the VForce3 reed valve system such a success for over fifteen years. While the VForce3 has been continually refined over the years (including the latest VForce3R models), this is a complete redesign of the entire system. We jokingly say, "The only thing we didn't change is the bolt pattern." However this is actually quite true.
All the components that go into making a VForce reed valve system have been significantly changed since the VForce3. The reed cage design now incorporates an airfoil shape at the reed tip area to increase air velocity from the outer ports. We use an all-new reed petal resin system, carbon fiber and lay-up on our new pre-curved reed petals. The benefit of the pre-curved reed petal is better sealing at the tip area.
The VForce4 also features longer reed stops to progressively slow petal tip velocity, for increased petal durability. The combined reed tip area has been increased by over 10% resulting in increased total airflow. Finally, we reduced frontal area of central wing by 15.6% combined with a more aerodynamic shape.
The all-new VForce4R models incorporate a rubber overmodling on the reed surface to drastically increase reed petal life, while also creating a superior sealing surface.
(V4R85A)
- Husqvarna TC 85 2019
- Husqvarna TC 85 2023
- Husqvarna TC 85 2022
- KTM 85SX Small Wheel 2022
- KTM 85SX Big Wheel 2022
- KTM 85SX Small Wheel 2021
- KTM 85SX Big Wheel 2021
- Husqvarna TC 85 2021
- Husqvarna TC 85 2020
- KTM 85SX Big Wheel 2023
- Husqvarna TC 85 2018
- Husqvarna TC 85 2017
- Husqvarna TC 85 2016
- Husqvarna TC 85 2015
- Husqvarna TC 85 2014
- KTM 85SX Small Wheel 2020
- KTM 85SX Big Wheel 2020
- KTM 85SX Small Wheel 2003
- KTM 105SX 2004
- Sherco 125 SE Factory 2019
- Sherco 125 SE Factory 2025
- Husqvarna TC 85 2025
- GasGas MC 85 2025
- Husqvarna TE250 2025
- Sherco 125 SE Factory 2024
- Sherco 125 SE Factory 2023
- Sherco 125 SE Factory 2022
- Sherco 125 SE Factory 2021
- Sherco 125 SE Factory 2020
- KTM 85SX Big Wheel 2003
- Husqvarna TE250 2024
- KTM 85SX Small Wheel 2024
- KTM 85SX Big Wheel 2024
- GasGas MC 85 2021
- GasGas MC 85 2024
- GasGas MC 85 2023
- GasGas MC 85 2022
- Husqvarna TC 85 2024
- KTM 85SX Small Wheel 2023
- KTM 85SX Big Wheel 2006
- KTM 85SX Small Wheel 2019
- KTM 85SX Big Wheel 2014
- KTM 85SX Big Wheel 2013
- KTM 85SX Big Wheel 2012
- KTM 85SX Big Wheel 2011
- KTM 85SX Big Wheel 2010
- KTM 85SX Big Wheel 2009
- KTM 85SX Big Wheel 2008
- KTM 85SX Big Wheel 2007
- KTM 85SX Big Wheel 2015
- KTM 85SX Big Wheel 2005
- KTM 85SX Big Wheel 2004
- KTM 105SX 2011
- KTM 105SX 2010
- KTM 105SX 2009
- KTM 105SX 2008
- KTM 105SX 2007
- KTM 105SX 2006
- KTM 105SX 2005
- KTM 85SX Small Wheel 2009
- KTM 85SX Small Wheel 2018
- KTM 85SX Small Wheel 2017
- KTM 85SX Small Wheel 2016
- KTM 85SX Small Wheel 2015
- KTM 85SX Small Wheel 2014
- KTM 85SX Small Wheel 2013
- KTM 85SX Small Wheel 2012
- KTM 85SX Small Wheel 2011
- KTM 85SX Small Wheel 2010
- KTM 85SX Big Wheel 2016
- KTM 85SX Small Wheel 2008
- KTM 85SX Small Wheel 2007
- KTM 85SX Small Wheel 2006
- KTM 85SX Small Wheel 2005
- KTM 85SX Small Wheel 2004
- KTM 85SX Big Wheel 2019
- KTM 85SX Big Wheel 2018
- KTM 85SX Big Wheel 2017
SKU | V4R85A |
Brand | Moto Tassinari |
Be The First To Review This Product!
Help other MotoXparts users shop smarter by writing reviews for products you have purchased.