Kawasaki has unveiled the 2019 KX450F. This brand new dirt bike joins Kawasaki’s illustrious KX line as a new iteration of its flagship motocrosser — with advanced technology and input directly derived from the Japanese brand’s factory race team.

First Look at the 2019 Kawasaki KX450F

It’s got a slimmer aluminum frame, a new stressed-member engine, a revised swingarm, new suspension, and a lot more upgrades that truly propel the KX450F into a new generation. The 2019 KX450F is the first motocross bike of Kawasaki’s to get an electric starter. Its brand new four-stroke, water-cooled, DOHC 449 cc thumper is now lighter — tuned for more peak power and a flatter torque curve. Its single cylinder has been offset forward by 8.5 mm for less mechanical loss, hence more efficiency. A lithium-ion battery helps shave more weight.

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First Look at the 2019 Kawasaki KX450F

Kawasaki World Superbike engineers have given the new XK450F finger-follower valve actuation — which reduces friction and affords a more aggressive cam profile, larger titanium valves (40 mm intake and 33 mm exhaust), an increased rev limit, and better performance at high rpms. Its lightweight bridged-box piston design is the same used by the Monster Energy Kawasaki race team. The fresh engine also receives a downdraft intake manifold and a new 12-hole fuel injector for its new 44 mm throttle body.

First Look at the 2019 Kawasaki KX450F

The thumper is mated to a close-ratio, five-speed transmission with a new hydraulic clutch; the latter is another first for a Kawasaki dirt bike. The 2019 KX450F features button-activated launch control and, once again, Digital Fuel Injection (DFI) couplers with three terrain settings: standard, hard, or soft. The handheld XK FI Calibration Kit is available as an optional Kawasaki Genuine Accessory, for tuners that want direct programming access to the bike’s ECU — eliminating the need for a laptop. It is PC compatible, stores up to seven preset maps, and together with the DFI couplers can be used with the engine running.

First Look at the 2019 Kawasaki KX450F

The 2019 Kawasaki KX450F gets 49 mm Showa coil-spring forks with A-KIT technology, an adjustable Showa Compact Design rear shock, Uni-Trak rear suspension linkage, a 270 mm front disc with a dual-piston caliper, and a larger 250 mm rear disc with a single-piston unit. It has a dry weight of 105.4 kg, a fuel capacity of 6.2 L, and a seat height of 955 mm. Kawasaki has set the MSRP to $9,299.