2011 Yamaha YZ450F, READY FOR THE TRACK !!! - 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.