New Engine: The new SOHC engine is 23 mm shorter, 23 mm narrower and 9 mm lower than the previous generation. Every internal component was revised and repositioned, lowering weight by an astonishing 1.8 kg for an overall weight of 27.8kg, increasing power to 63 hp and improving torque along the entire rev-range. Mass-centralisation was a key development factor, enabling chassis engineers to position the engine closer to the centre of gravity for greatly improved handling and manoeuvrability. Vibrations are kept to a minimum thanks to a multifunctional counter balance shaft that also drives the water pump and timing chain.
New Gearbox: A lighter and more compact 5-speed gearbox is 8 mm narrower and 350 g lighter than the previous generation. The new surface treatment on 1st and 5th gears improves reliability, and combined with a new low-friction coating on the shifting fork and a redesigned shift drum, guarantee smooth and precise shifting. The gear lever features a new tip design that prevents dirt build-up. An advanced gear sensor allows for specific engine maps in each gear.
New Frame: With years of experience in designing the most advanced steel frames in offroad, the engineers in Research and Development have designed a completely new chromium molibdenum steel frame that redefines every structural aspect in order to improve handling, ergonomics and packaging. The torsional rigidity and longitudinal stiffness have been completely rethought. The 6mm wider and 2mm lower steel tubes offer 20% more torsional rigidity and 30% less longitudinal stiffness compared to the previous generation frame design. These characteristics, matched to the new engine stays, improve handling precision while at the same time increasing bump-absorption and feeling.
Carbon Fibre Subframe: The use of carbon fibre strips away weight, improving weight distribution and bringing weight closer to the centre of gravity for precise handling. The composition of the material is now 30% carbon fibre and the overall 3-piece construction is 1 kg lighter than the previous subframe, for an overall weight of 1.4 kg. It is also more compact as well as being shorter, for greatly improved ergonomics.
High Tech Components
New Crankshaft: The new crankshaft features 10% more inertia and has been repositioned 9 mm backwards and 7 mm higher. The higher inertia increases traction and rideability while the new position within the engine contributes to mass-centralisation. A plain big end bearing and two force-fitted bearing shells ensure maximum reliability and durability, guaranteeing long service intervals of 100 hours.
New CNC Machined Triple Clamps: The black-anodised CNC machined triple clamps feature a new top clamp that integrates a rubber damping system that reduces vibrations, therefore increasing comfort. The triple clamps have been meticulously designed to evenly distribute the clamping force on the fork leg, maximizing contact area for optimal sensitivity and minimum friction. Handlebar position adjustability has been maintained for MY16.
Magura Hydraulic Clutch: The FC 450 now features a new Magura hydraulic clutch system. The high quality German-made clutch system guarantees even wear, almost maintenance-free operation and perfect modulation in every condition. This means that play is constantly compensated so that the pressure point and function of the clutch remain identical in cold or hot conditions, as well as over time.
New DDS Clutch: A new DDS (damped diaphragm steel) clutch system with a lighter clutch basket is fitted to the new FC 450. The inner hub and pressure plate have also been redesigned to improve oil flow and cooling, while the Magura hydraulics and lever offer perfect modulation and control. The exclusive characteristics of this system include a single diaphragm steel pressure plate instead of traditional coil springs. It integrates a damping system for better traction and durability. The clutch basket is a single-piece CNC machined steel component that allows the use of thin steel liners and contributes to the narrowness of the engine.
Completely Redesigned Bodywork: Distinctive and futuristic bodywork highlights the massive performance leap of the MY16 motocross range, while striking pearl blue and electric yellow colours and graphics stylishly adorn the modern design. The ergonomics have been completely revised for improved control and comfort, enabling riders to perform at the highest level for extended periods of time. The seat has a new low-profile design with revised padding and a new high-grip cover for superior comfort and control in all conditions.
New Suspension: WP’s 4CS fork has a revised setup to match the new chassis characteristics of the MY16 generation motocross. As with all 4CS forks by WP, the clicker settings can be easily and quickly adjusted via the dials on the top of the fork tubes. The red dial on the right alters rebound damping, while the white dial on the left is for compression damping. A new, shorter and lighter shock by WP features a larger gas chamber designed to maintain consistent performance during use. New internal components, such as the piston and shock shaft increase setup options. A new clevis design contributes to shortening the overall length by 12 mm, while the stroke is reduced by 3 mm. The shock is completely adjustable for high and low speed compression damping as well as rebound. The rear link has been completely redesigned to match the new rear shock. 148.2 mm pull rods replace the previous link’s 145 mm items and, combined with the redesigned bell crank, maintains a similar progressive rate as MY15. Rear wheel travel is now 300 mm and, thanks to the uprated rear suspension behaviour, softer springs can be used.
Brakes: New brake discs from GSK feature increased braking power, combined with class-leading Brembo calipers and controls.
Wheels and Tyres: Black high-strength alloy rims by DID are matched to CNC machined hubs and new lightweight spokes and silver anodised aluminium nipples. Dunlop MX52 Motocross tyres that feature the proven “block-within-a-block” design for more progressive cornering and superior grip are fitted as standard.
Map Switch and Launch Control: As in previous model years, the MY16 motocross range features a standard handlebar map switch. For MY16, on the 4-strokes, the map switch now also activates launch control. With the engine at idle, launch control is engaged by switching once between the selected map and the alternative map, and then back again. When the fuel injection LED flashes, launch control is engaged. This function limits the amount of power to the rear wheel for approximately two seconds, improving traction and preventing loss of control under hard acceleration.
New Engine Management System: The new Keihin EMS is smaller, lighter and faster at processing data. It integrates launch control for perfect starts and selectable engine maps via the switch on the handlebar. Combined with the new gear sensor, power delivery can be tailored for each gear. Engine maps can be personalised according to rider preference with the optional Husqvarna accessories tool.
New 44 mm Throttle Body: The diameter of the throttle body remains the same as the previous model year at 44 mm; however, the injector has been repositioned in order to optimise flow into the combustion chamber. By eliminating the throttle linkage and directly mounting the throttle cables, overall throttle body weight has been reduced by 100 g while also providing more immediate throttle response and feeling.
New Electric Start and Li-Ion Battery: The new electric starting system, standard on all 4-strokes, is more efficient and 150 g lighter and, combined with the new compact Li-Ion battery, saves over 1 kg in overall weight. The wiring harness has been optimised so that the rear subframe can be removed without having to remove any wiring.
Design: 1-cylinder 4-stroke engine, water-cooled
Displacement: 449.9 cm³
Bore: 95 mm
Stroke: 63.4 mm
Starting aid: Electric starter
Transmission: 5-speed, claw shifted
Engine lubrication: Forced oil lubrication with 2 Eaton pumps
Primary ratio: 31:76
Secondary gear ratio: 13:48
Cooling system: Liquid cooling system, continuous circulation of cooling liquid with water pump