VFORCE offers you this double roof valve box for your motocross YAMAHA YZ 85cc. MOTO TASINARI has developed this type of valve to offer more torque and especially a better controlled flow to facilitate the driving and get the most performance possible to your motocross. This valve gear model is called V FORCE 2. With its double roof architecture it allows to open the slats 2 times less than the original ones. To be clear, an engine running at 8000 rpm, the slats open and close 133 times! With an original slat the movement is longer and so is the motor reaction. Whereas with this W-system the 4 blades travel 2 times less distance while feeding your engine perfectly. The engine reacts much better at any rpm and gives much more torque. The blades are made of carbon to offer a good rigidity and reliability. The thickness is specially studied for each engine to offer the most performance possible. The air flow has also been reworked to have the most flow and the best direction possible. You will have this valve gear and the best of the admission for 2-stroke engine

Fits on :

YAMAHA YZ 85 (CB04) 85 2003

YAMAHA YZ 85 (CB04) 85 2002

YAMAHA YZ 85 (CB07) 85 2004

YAMAHA YZ 85 (CB09) 85 2012

YAMAHA YZ 85 (CB09) 85 2011

YAMAHA YZ 85 (CB09) 85 2010

YAMAHA YZ 85 (CB09) 85 2009

YAMAHA YZ 85 (CB09) 85 2008

YAMAHA YZ 85 (CB09) 85 2007

YAMAHA YZ 85 (CB09) 85 2006

YAMAHA YZ 85 (CB09) 85 2005

YAMAHA YZ 85 LW BIG WHEELS 19/16 (CB05) 85 2003

YAMAHA YZ 85 LW BIG WHEELS 19/16 (CB05) 85 2002

YAMAHA YZ 85 LW BIG WHEELS 19/16 (CB08) 85 2004

YAMAHA YZ 85 LW BIG WHEELS 19/16 (CB10) 85 2018

YAMAHA YZ 85 LW BIG WHEELS 19/16 (CB10) 85 2017

YAMAHA YZ 85 LW BIG WHEELS 19/16 (CB10) 85 2016

YAMAHA YZ 85 LW BIG WHEELS 19/16 (CB10) 85 2015

YAMAHA YZ 85 LW BIG WHEELS 19/16 (CB10) 85 2014

YAMAHA YZ 85 LW BIG WHEELS 19/16 (CB10) 85 2013

YAMAHA YZ 85 LW BIG WHEELS 19/16 (CB10) 85 2012

YAMAHA YZ 85 LW BIG WHEELS 19/16 (CB10) 85 2011

YAMAHA YZ 85 LW BIG WHEELS 19/16 (CB10) 85 2010

YAMAHA YZ 85 LW BIG WHEELS 19/16 (CB10) 85 2009

YAMAHA YZ 85 LW BIG WHEELS 19/16 (CB10) 85 2008

YAMAHA YZ 85 LW BIG WHEELS 19/16 (CB10) 85 2007

YAMAHA YZ 85 LW BIG WHEELS 19/16 (CB10) 85 2006

YAMAHA YZ 85 LW BIG WHEELS 19/16 (CB10) 85 2005