In 2010, we rocked the MX world with the release of our revolutionary YZ450F.
The first ever production bike built around fuel injection. We moved the intake system up front, and slanted the cylinder rearward, which resulted in the most compact centre of mass ever found in a four-stroke. Instant throttle response, unprecedented balance and superior handling were by-products. The Bilateral Beam frame introduced revised geometry moving the fuel tank lower and back, while transferring more impacts to an all-new suspension and gave more feedback to the rider. And it’s back for 2011 in all it’s awesome glory.
” “Reversed” liquid-cooled, 450cc, DOHC, 4-valve, 4-stroke, single with fuel injection and titanium valves. The engine has been tuned for excellent “drivability and controllability” one of the keys to fast lap times. The engine delivers a broad power curve with a great over-rev capacity.
” Unique engine design features a rearward slanting cylinder that is “reversed” compared to traditional designs. The FI throttle body and air box are front mounted while the exhaust exits from the rear of the cylinder. This design is used to centralize mass for excellent handling and a light feel. The other major benefit is the straight shot intake system which maximizes power output. The engine is slanted 7.5 degrees rearward.
” The “reversed” design allows for a straight intake path into the cylinder, providing maximum intake flow and efficiency for excellent power. The front positioned intake means that engine heat will have less “heating effect” on the incoming fuel charge (cooler fuel helps increase power).
” Centrally located spark plug and the 4-valve head promotes a “tumbling effect” of the inbound fuel / air for better combustion, improved throttle response and power output.
” Compact, 4-valve cylinder head design, features a 12.5:1 compression ratio. The intake valves are 36mm in diameter and the exhaust valves are 30mm.
*Price: $8,250.00 *Halls Deal: $6,499.00