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Yamaha knows the importance of the behavior of a cross-country bike in turns. The YZ450F has been designed to offer, among other things, the best possible performance in curves. On the handlebars of your YZ450F, you can anticipate, and accelerate early out of bends.
The YZ450F features a revolutionary rear-tilt, four-stroke, four-valve, dual overhead cam, liquid-cooled and injection engine. The injection system is located at the front of the engine and the exhaust at the rear, which promotes efficiency. This exceptional cross-country bike results from the alliance of an innovative engine with a chassis with a light aluminum frame with side “beams”. The YZ450F has an ideal weight centering which gives it exceptional handling and a dynamic behavior that is simply astonishing..
The long-stroke suspension system is specially designed to improve the bond with the ground, guaranteeing optimal power transmission. But it is also the guarantor of a perfect dynamic behavior during jumps, passages in support, phases of acceleration and braking. The YZ450F is the dream machine for an off-road rider. Now it’s up to you to “play” to get on the first step of the podium !
Revolutionary motor
The new four-stroke, four-valve, liquid-cooled, 450cc rear-tilt engine³ has an injection intake located on the front. This technological choice makes it possible to have a direct admission which fills the cylinder more efficiently. This provision of the inversion of the admission and the exhaust compared to a “conventional” system promotes better weight distribution. This placement also contributes to the centering of the masses, thus ensuring greater homogeneity to the machine..
Aluminum frame with two lateral “beams”
Different types of aluminum are used to make the frame parts to ensure the best balance between strength, flexibility and rigidity. This technical choice contributes to the exceptional dynamic behavior of the YZ450F. The result: a chassis that is both robust and light, which makes the YZ450F breathtaking in turns and impressive in handling..
Injection system
The YZ450F injection system is electronically managed to ensure the best possible power at all times. A TPS (throttle valve position sensor) sensor and sensors measuring intake pressure, intake air temperature, atmospheric pressure, crankshaft rotational speed and coolant temperature, continuously inform the system so that the quantity of fuel mixture sent to the engine is constantly optimized.
The YZ Power Tuner (optional accessory)
The YZ Power Tuner allows you to set the characteristics of your machine, without the need for a laptop. You can, for example, choose a richer air-fuel ratio at low revs or a lean mixture at high revs, depending on the realities on the ground. With its simple interface and easy-to-configure 3D calculators, its use is easy..
Stiff rear wheel spokes
The YZ450F’s rear wheel spokes have a length, angle and crossover that optimize the characteristics of the wheel. Comfort and traction are thus improved.
Aggressive styling
The line of the YZ450F is the perfect reflection of its qualities. It conveys an image of lightness and agility, power and aggressiveness. The parts of its dressing, reduced to a minimum, contribute to its dynamism and give it its particular style..
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The technical aspect
Yamaha YZ 450 F 2011
- Frame
- Frame: perimeter aluminum
- Tank: 6.2 liters
- Seat height: 999 mm
- Length: 2191 mm
- Width: 825 mm
- Height: 1311 mm
- Wheelbase: 1,487 mm
- Weight in running order: 111 kg
- Train before
- Telehydraulic inverted fork Ø 48 mm, deb: 310 mm
- 1 disc Ø 250 mm, 2 piston caliper
- Front wheel:
80/100
– 21
- Transmission
- 5-speed gearbox
- Secondary chain transmission
- Rear axle
- Mono-shock absorber, deb: 310 mm
- 1 disc Ø 245 mm, 1 piston caliper
- Rear wheel:
110/90
– 19
- Motor
- Single cylinder
, 4 stroke - Cooling: Liquid cooling
- Injection ø 44 mm
- 2 ACT
- 4 valves per cylinder
-
449.70 cc
(97 x 60.8 mm) - Compression: 12.5: 1
- Crit’air:
Detached pieces
exhaust
motor
fluid
electricity
filtration
braking
chain kit
Competitors
Honda CRF 450 R 2011
Suzuki RM-Z 450 2011
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