YFZ450 - Race bred for domination of the track

A legend in its own time, the YFZ450 is the most successful 4-stroke ATV in racing. Of course, there are others who like to follow, but that's familiar turf for Yamaha - blazing trails in motorcycle and ATV competition. The YFZ450R is the number one choice of racers. And one look at the specification tells you why. The result of a decade of race-winning experience, it’s a total package of sharp-handling, tight suspension and a high-tech engine. Agile and nimble, competitive performance is what it’s all about. The fast-spinning, 5-valve DOHC 449cc engine is held low in the rigid, lightweight hybrid chassis, while long-travel suspension and a wide track contribute to the overall balance. The 32-bit fuel injected engine, gearbox, clutch and exhaust deliver the perfect combination of hole-shot acceleration and smooth power – right through the rev range.

ENGINE
Engine	4-Stroke Single, Liquid Cooled w/Fan, Titanium 5-Valve DOHC
Displacement	449cc
Bore and Stroke	95mm x 63.4mm
Compression Ratio	11.4:1
Carburetion	Keihin 39mm FCR w/ Throttle Position Sensor
Ignition	DC - CDI
Starting	Electric
Transmission	Wide ratio, 5-Speed Manual
Final Drive	Sealed O-Ring Chain
CHASSIS
Suspension (Front)	Independent Double Wishbone, 9.1" travel; adjust. for compression, rebound & preload
Suspension (Rear)	Aluminum swingarm, 10.6" travel; adjust. for compression, rebound & spring preload
Brakes (Front)	Dual Hydraulic Disc, Twin Piston Caliper
Brakes (Rear)	Hydraulic Disc, Twin Piston Caliper
Tires (Front)	AT21x7-10 Radial
Tires (Rear)	AT20x10-9 Radial
CRITICAL DATA
Length	1,840mm (72.4")
Width	1,170mm (46.1")
Height	1,090mm (42.9")
Wheelbase	1,280mm (50.4")
Ground Clearance	112mm (4.4")
Seat Height	810mm (31.9")
Dry Weight	159kg (350 lb)
Fuel Capacity	10 litres
Colour(s)	Racing Blue, White

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