YZ450F
The YZ450F takes full profit of the advanced concept behind the rear-slanting engine layout and the new snaking exhaust pipe flow from the back of the cylinder head; attributes that distance the YZ-F family from the competition.
Born out of the white heat of competition using input from champion motocross riders around the globe. Riders like US AMA Champion Cooper Webb, MX World Champion Romain Febvre, and of course Australian MX1 Champion, CDR Yamaha rider Dean Ferris.
The all-new ground-breaking YZ450F features the world’s first smartphone engine tuning app on a production motocross bike, as well as electric start and all new engine, compact bilateral beam frame, new bodywork and much more.
The bar has once again been raised to deliver a class leading 450cc race bike with even more controlability. The new YZ450F heralds a new era of advanced racing technology with a level of power, handling and rider interaction never seen before.
YZ450F’s revolutionary rearward-slanted-cylinder design is an innovative approach to achieve unmatched mass centralisation. Concentrating the motorcycle’s heaviest components (engine mass, fuel tank, exhaust system, and airbox) toward the centre of the machine helps achieve superior, nimble handling.
The aluminum Bilateral Beam frame has been refined further, the swingarm's pivot assembly is 12mm wider, and the aluminium frame's lower rear section is modified to accommodate this stronger design. Redesigned steel engine mounts also contributing towards the increased rigidity of the chassis - and to lower the rider's centre of gravity and give greater freedom in terms of body position, the footrests are mounted 5mm lower.
Races can be won or lost in the charge from the start to the first corner, and in order to give Yamaha riders a key advantage, the 2016 YZ450F is equipped with a sophisticated new Launch Control System (LCS) for smoother and quicker acceleration off the start line.
The exhaust pipe has an innovative layout, circling the cylinder, giving the exhaust pipe proper length for an excellent exhaust-pulse effect. At the same time, the exhaust pipe has three different diameters throughout the exhaust tract, bringing out excellent power characteristics. This new layout allows the silencer to be positioned forward behind the side panel closer to the middle of the bike which centralises the mass for superior handling.
A new layout for the fuel tank and air cleaner box gives the machine a slimmer feeling between the legs as well as position's the fuel tank mass closer to the centre of the bike which improves handling feel. Furthermore, the air box can now be accessed with quick release fastners for easy serviceability of the large air cleaner element.
Optional accessory, GYTR Power Tuner lets bike tuners adjust air/fuel mixture and ignition timing maps to match engine performance characteristics to the rider and track conditions.
Engine
Engine Type | Liquid cooled 4-stroke, DOHC, 4-valve |
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Displacement | 449 cc |
Bore x Stroke | 97.0 x 60.8 mm |
Compression Ratio | 12.5 : 1 |
Lubrication System | Wet sump |
Fuel Management | Fuel Injection |
Ignition | TCI |
Starter System | Kick |
Fuel Tank Capacity | 7.5 L |
Oil Capacity | 0.95 L |
Final Transmission | Chain |
Transmission | Constant mesh 5-speed |
Dimensions
Length | 2180 mm |
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Width | 825 mm |
Height | 1280 mm |
Seat Height | 965 mm |
Wheelbase | 1480 mm |
Ground Clearance | 330 mm |
Dry Weight | 106 kg |
Wet Weight | 112 kg with 7.5 litres of fuel |
Chassis
Frame Type | Bilateral beam frame |
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Suspension Front | Telescopic fork, 310mm travel |
Suspension Rear | Swingarm (link suspension), 315mm travel |
Brakes Front | Hydraulic disc, 270mm |
Brakes Rear | Hydraulic disc, 245mm |
Tyres Front | 80/100-21 51M |
Tyres Rear | 110/90-19 63M |