2015 Kawasaki KX450F Its no secret that Monster Energy Kawasaki has been dominating the AMA Supercross and AMA Motocross series, with Ryan Villopoto piloting his Monster Energy Kawasaki KX450F race bike to four consecutive AMA Supercross Championships in 2011 through 2014. Villopotos skills are undeniable, but the race-ready Kawasaki KX450F allows the legendary racer to brake later, carve deeper and accelerate harder thanks to a technology package and powerful yet tractable motor unrivaled by any production motocross bike. Features may include: - Launch Control helps to reduce wheelspin on slippery starting gates - Showa SFF-AIR fork with triple air chamber uses air to reduce weight, compared to traditional metal-coil fork springs, providing effective tuning and bottoming resistance - Includes a free Kawasaki Genuine PSF Air Fork Pump and removable adjustment valve for quick and easy tuning of fork spring pressure - Engine is tuned for optimum power delivery all the way from basement revs through the upper rpm range, this results in impressive thrust that continues from corner-exit to the end of the straights - Revised Bridged Box piston. Piston crown allows for superior ultra-low to mid-range engine response - Intake cam shape promotes strong low-RPM throttle response - Larger 270mm oversize Braking petal-shape front disc, 240mm petal-shape rear disc - Front master cylinder features a knocker-style lever-to-piston interface for excellent feel and superbly consistent performance - Pre-programmed ignition maps are interchangeable trackside, no PC required - Adjustable 4-position handlebar and 2-position footpegs allow riders to fit the KX to match their personal preference - Black anodized aluminum rims for a factory look