The VFORCE/MOTO TASSINARI V-Force 4 Reed Valve Set is designed for selected Yamaha YZ80 and YZ85 applications. It features long reed stops that progressively slow reed petal tip velocity to support increased petal durability, along with an advanced reed petal resin system, carbon fiber construction and specialized lay-up.
The reed valve set uses a reduced frontal area on the central wing with a more aerodynamic shape. An airfoil-shaped cage tip helps increase velocity from the outer ports, while the combined reed tip area is increased by 10.5% for improved airflow. Pre-curved reed petals help ensure a better seal at the tip, and the wider reed cage is designed for maximum airflow.
Distributor part number: V4R82A-I. Manufacturer part number: V4R82A-I. Made in the USA. Fits 1995, 1997 and 2000 Yamaha YZ80 models, plus 2006, 2007, 2010, 2012, 2015, 2019 and 2026 Yamaha YZ85 models.
Features:
- Reed Valve Design: V-Force 4 reed valve set for selected Yamaha YZ80 and YZ85 applications.
- Reed Stops: Long reed stops progressively slow reed petal tip velocity for increased petal durability.
- Airflow Design: Reduced central-wing frontal area and aerodynamic shaping support airflow performance.
- Cage Tip: Airfoil-shaped cage tip is designed to increase velocity from the outer ports.
- Reed Tip Area: Combined reed tip area is increased by 10.5% for better airflow.
- Reed Petals: Advanced resin system, carbon fiber and lay-up with pre-curved petals for a better tip seal.
- Reed Cage: Wider reed cage designed for maximum airflow.
- Fitment: Fits 1995, 1997 and 2000 Yamaha YZ80 models, and 2006, 2007, 2010, 2012, 2015, 2019 and 2026 Yamaha YZ85 models.
- Origin: Made in the USA.
Fitment:
1993 Yamaha YZ80
1994 Yamaha YZ80
1995 Yamaha YZ80
1996 Yamaha YZ80
1997 Yamaha YZ80
1998 Yamaha YZ80
1999 Yamaha YZ80
2000 Yamaha YZ80
2001 Yamaha YZ80
2003 Yamaha YZ85
2004 Yamaha YZ85
2005 Yamaha YZ85
2006 Yamaha YZ85
2007 Yamaha YZ85
2008 Yamaha YZ85
2009 Yamaha YZ85
2010 Yamaha YZ85
2011 Yamaha YZ85
2012 Yamaha YZ85
2013 Yamaha YZ85
2014 Yamaha YZ85
2015 Yamaha YZ85
2016 Yamaha YZ85
2017 Yamaha YZ85
2018 Yamaha YZ85
2019 Yamaha YZ85
2020 Yamaha YZ85
2021 Yamaha YZ85
2022 Yamaha YZ85
2022 Yamaha YZ85LW
2023 Yamaha YZ85
2023 Yamaha YZ85LW
2024 Yamaha YZ85
2024 Yamaha YZ85LW
2025 Yamaha YZ85
2025 Yamaha YZ85LW
2026 Yamaha YZ85