Yamaha
YFZ 450X Power & Performance
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2010 Yamaha YFZ450X ATV receives
a new FI system specially designed for
woods riding along with a new oval muffler
to provide maximum performance with
low noise |
The YFZ450X features the powerful titanium 5-valve
DOHC liquid cooled single cylinder 449cc engine
using the cylinder head and cylinder from the
championship-winning YZ450F motorcycle. The
titanium five-valve cylinder head comes with
camshafts designed just for ATVs that hammers
out superior low- to mid-range torque and pushes
through to a high-revving, hole-shot grabbing
top end.
Like its track-dominating brother, the technologically
advanced 450X is also equipped with electronic
fuel injection featuring a 42 mm Mikuni®
throttle body, 12-hole Denso injector system
and a Mitsubishi 32 bit ECU, which provides
exceptional atomization of the fuel for maximum
power, unrivaled throttle response and automatic
altitude and temperature adjustment.
For 2010, the YFZ receives a new FI setting
specifically designed for those situations
unique to technical woods riding. The system
also includes idle speed control for easy,
reliable startup. A stainless steel head pipe
with a titanium heat shield and a new oval
muffler provide maximum performance while
keeping the YFZ450X well below recommended
noise limits
Yamaha
450X Cast Aluminum Frame
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The new YFZ450X features the lightweight,
no-weld cast aluminum frame exclusively from
Yamaha and first introduced on the 450R. The
frame’s high tension-steel bottom portion
helps keep the engine as low as possible,
centralizing mass for optimized handling.
The cast aluminum frame is bolted together,
rather than welded, for maximum durability.
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Yamaha
YFZ450R & YFZ450X Aluminum / Steel
Frame |
Simple
Service Access and Rider Comfort
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Like the 450R, the all-new YFZ450X has the benefit
of years of Yamaha Factory Racing experience
– on resulting highlight is simple race
prep and service. Body panels come off easily,
and there is no need to remove the battery or
other components to take off the fenders. The
oil tank is integrated with the crankcase so
servicing the engine is a snap.
The YFZ450X also boasts ProTaper® handlebars
with four-position adjustability, allowing
riders of any size to find a comfortable setting.
The seat design is thin yet roomy in the front
and wider and more padded in the back for
a more comfortable all-around ride. The YFZ450X
also comes with large 65 mm wide foot pegs
with kick-ups that provide maximum traction
and added comfort when moving around on the
machine.
