The Kawasaki KX450 has been a top Dirt Rider 450 MX Shootout contender since its last major update, back in 2012. It was the first motocross bike to debut the now trending "launch control" and has often been praised for its strong engine character and straight-line stability on the track. Since then, it has seen minimal changes, with the exception of the Showa SFF TAC air fork that was introduced back in 2013. For 2016, Kawasaki tried to address some issues that we have been looking for in the green machine. During the KX450F press introduction, we got a technical presentation on the breakdown of changes on the chassis, suspension and engine. Kawasaki revised the cylinder head, the Cylinder is offset (8.5 mm forward), reducing friction and enabling more efficient power generation, revised intake valves and intake cam timing change are designed to complement cylinder exhaust system revisions, intake ports are less curved, revised intake cam timing (advanced 2-degrees), a piston crown design that matches the revised intake valves and maintains the compression ratio at 12.8:1, a new resonator effectively increases the exhaust pipe length and reduces exhaust noise volume by approximately 2 dB, excess meat was trimmed from transmission gears and shafts to reduce weight by approximately 260 grams (9.2 ounces), all-new aluminum perimeter frame offers revised rigidity from a slimmer and lighter layout, the radiator orientation has been turned inward to allow for a slimmer shroud design for improved ergonomics, oversized 270 mm front brake rotor, a redesigned flatter seat and fuel tank as the top of the fuel tank is lower, allowing an even flatter progression from the seat to the tank, intake ducts added below the rear of the seat (for improved throttle response), revised Showa suspension settings, and finally all new bodywork.