Class leading performance and suspension along with the smartphone power tuner app make this the bike of choice for race winners.
Features may include:ENGINE
The YZ450F’s distinct rearward-slanted cylinder design is now even lighter and more compact than before; ideally positioned in the frame for optimized weight distribution. Inside; the new head features steeper valve angles to allow for an even straighter down-draft intake port; as well as more aggressive cam profiles and larger diameter exhaust header joint working together with a higher compression bridge-box design piston; DLC-coated piston pin; and longer connecting rod to give YZ450F riders the best balance of class leading power with an all new level of controllability.
Breaking new ground in the industry â€“ again â€“ Yamaha created the Power Tuner app; which brings the power of the GYTR Power Tuner to your iOS® or Android® device. Using wireless connectivity to talk to the bike’s onboard CAN-bus network; the app allows owners to adjust air/fuel mixture and ignition timing maps to tune engine performance for track conditions; record race log information; and monitor a range of data such as maintenance and system diagnosis; engine run time; and more.
A handlebar-mounted map switch allows the rider to quickly select between preloaded engine maps—loaded and configured in the Power Tuner app—to account for changing track and weather conditions.
The YZ450F features a compact electric starter system to minimize restart delays on track and add convenience everywhere else. Powered by a high-capacity and ultra-lightweight four-cell lithium-ion battery; the system adds minimal weight.CHASSIS/SUSPENSION
The YZ450F’s compact aluminum frame further refines the instinctive handling that makes this Yamaha one of the sharpest machines in the class. Every aspect has been carefully retuned; with thinner main spar construction; thicker down tubes; revised top triple clamp; and all-new motor mounts that work together to optimize overall rigidity balance for excellent handling; especially in fast; bumpy conditions.
The YZ450F features stylish bodywork from tip to tail; including a compact fuel tank specifically designed for motocross demands. The new handlebar position is 5mm lower and 15mm forward and the seat features 10% firmer foam to assist the rider in keeping their weight forward during aggressive riding.
The new top triple clamp design is resculpted to balance rigidity for improved steering feel; while the 4-position adjustable handlebar clamp is rubber mounted for comfort; reduced handlebar vibration and easily tunable bar position.
Yamaha’s unique embedded graphics are built into the bodywork for extended durability; resisting both peeling and damage.