Moto Tassinari Vforce4x Valve System V4X07EM

Moto Tassinari has extracted more power and more performance from our already proven Vforce3 reed valve system design for the 85cc market, by offering the all-new Vforce3i with integrated intake boot (included on CR, RM & YZ models only). the Vforce3i shares many of the same features as it’s legendary big brother, along with these additional unique features

The Moto Tassinari Vforce4x Valve System, part number V4X07EM, is designed to extract more power and performance from the proven Vforce reed valve system design. It features a newly designed intake boot with a centralized opening intended to provide a direct path into the engine cases for more even fuel and air distribution.

The system includes redesigned reed stops to improve reed petal stability and promote controlled reed petal opening. A shorter reed cage allows the use of lighter reed petals, supporting a noticeable increase in overall performance. The custom-designed intake boot is engineered for integration with Honda, Suzuki and Yamaha 85cc models only, while the product data also lists fitment for select Yamaha YZ250X, Suzuki RM250 and Yamaha YZ250 applications.

For fitment verification, review the listed vehicle applications before ordering. Moto Tassinari part number V4X07EM identifies this Vforce4x Valve System.

Features:

• Straight Shot: Centralized intake boot opening provides a direct path into the engine cases for more even fuel and air distribution.
• Reed Stops: Redesigned reed stops help increase reed petal stability for controlled reed petal opening.
• Reed Petals: A shorter reed cage allows the use of lighter reed petals for increased overall performance.
• Custom Boot: Custom-designed intake boot provides integration for Honda, Suzuki and Yamaha 85cc models only.
• Brand and Part Number: Moto Tassinari V4X07EM.

Fitment:
Suzuki RM250 1996
Suzuki RM250 1997
Yamaha YZ250 1997
Yamaha YZ250 1998
Yamaha YZ250 1999
Yamaha YZ250 2000
Yamaha YZ250 2001
Yamaha YZ250 2002
Yamaha YZ250 2003
Yamaha YZ250 2004
Yamaha YZ250 2005
Yamaha YZ250 2006
Yamaha YZ250 2007
Yamaha YZ250 2008
Yamaha YZ250 2009
Yamaha YZ250 2010
Yamaha YZ250 2011
Yamaha YZ250 2012
Yamaha YZ250 2013
Yamaha YZ250 2014
Yamaha YZ250 2015
Yamaha YZ250 2016
Yamaha YZ250 2017
Yamaha YZ250 2018
Yamaha YZ250 2019
Yamaha YZ250 2020
Yamaha YZ250 2021
Yamaha YZ250 2022
Yamaha YZ250X 2016
Yamaha YZ250X 2017
Yamaha YZ250X 2018
Yamaha YZ250X 2019
Yamaha YZ250X 2020
Yamaha YZ250X 2021
Yamaha YZ250X 2022