KX450F – 2017
- General Details
THE LIGHTEST, FASTEST 450cc MOTOCROSSER
KX design philosophy is simple: put mid-level to expert riders on the top step of the podium. This philosophy has not changed since the creation of the KX brand over
40 years ago. With 32 AMA Supercross titles to its credit, the most of any manufacturer, KX has a proven record of powering champions. Significant weight reduction to engine and chassis for 2016 makes the KX450F the lightest machine in its class. The resultant sharper handling is complemented by a slimmer chassis and an even more powerful engine, further increasing its circuit potential.*Price subject to change without notice, colours subject to availability.
ENGINE Type Liquid-cooled, 4-stroke Single Displacement 449 cm3 Bore and Stroke 96.0 x 62.1 mm Compression ratio 12.8:1 Valve system DOHC, 4 valves Fuel system Fuel injection: ø43 mm x 1 Ignition Digital DC-CDI Starting Primary kick Lubrication Forced lubrication, semi-dry sump DRIVETRAIN Transmission 5-speed, return Final drive Chain Primary reduction ratio 2.727 (60/22) Gear ratios: 1st 1.750 (28/16) 2nd 1.412 (24/17) 3rd 1.188 (19/16) 4th 1.000 (19/19) 5th 0.875 (21/24) Final reduction ratio 3.846 (50/13) Clutch Wet multi-disc, manual FRAME Type Perimeter, aluminium Wheel travel: front 310 mm rear 315 mm Tyre: front 80/100-21 51M rear 120/80-19 63M Caster (rake) 28.0o Trail 125 mm Steering angle (left/right) 42o / 42o SUSPENSION Front ø49 mm inverted telescopic SFF-Air TAC (Separate Function front Fork Air – Triple Air Chamber) with adjustable compression and rebound damping Rear New Uni-Trak with adjustable dual-range (high/low-speed) compression damping, adjustable rebound damping and adjustable preload BRAKES Front: Type Single semi-floating ø270 mm petal disc Caliper Dual-piston Rear: Type Single ø240 mm petal disc Caliper Single-piston DIMENSIONS Overall length 2,195 mm Overall width 820 mm Overall height 1,290 mm Wheelbase 1,495 mm Ground clearance 345 mm Seat height 960 mm Curb mass 108.7 kg Fuel capacity 6.3 litres
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