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Yamaha Dirt Bikes And Their History: Specs On The '08 Range



The history of Yamaha dirt bikes began way back before you were just a twinkle in your ol' mans eye. The Yamaha Corporation was founded in 1887 by Torakusu Yamaha. They originally built pianos, then over the years branched out into a wide range of products including all types of electronics, musical instruments, computer products, home appliances and even robotics.

To this day you can still recognize Yamaha's strong musical roots by its logo which consists of 3 interlocking tuning forks.

It was Genichi Kawakami, the then CEO of the Yamaha Corporation, who made the decision to utilize the companies engineering skills and expand into motorized devices.

By August 1954 the Yamaha YA-1 was complete. It was a two-stroke 125cc road bike.

July 1955 Yamaha Motor Co L.t.d was founded. It now had its very own dedicated factory called the Hamakita Factory of Nippon Gakki.

But it wasn't until 1968 that the first Yamaha dirt bike was produced. The DT-1 was a two-stroke 250cc Enduro bike and was claimed to be the worlds first true off-road motorcycle. It was an exciting and hugely successful bike... and the USA couldn't get enough of 'em!



Yamaha have continued with their vision and commitment to excellence by being a leader in the motorcycle industry. Environmental concerns were the motivating factor that gave birth to the YZ400F in 1997. They were the first company to create the new breed of four-stroke motocrossers as we know them today.

As you can see, the Yamaha dirt bikes of today have changed just a tad since the Flintstones-styled DT-1!

Some Of The '08 Yamaha Dirt Bikes

YZF450



SPECS:
Model: YZ450F
Engine: 449cc liquid-cooled DOHC 4-stroke; 5 titanium valves
Bore Stroke: 95.0 x 63.4mm
Compression Ratio: 12.3:1
Carburetion: FCR-MX39 x 1
Ignition: CDI
Transmission: Constant-mesh 5-speed; multiplate wet clutch
Final Drive: Chain Drive
Suspension/Front: Speed-Sensitive System inverted fork; fully adjustable, 11.8-in travel
Suspension/Rear: Fully adjustable single shock; 12.3-in travel
Brakes/Front: Hydraulic single disc brake, 250mm
Brakes/Rear: Hydraulic single disc brake, 245mm
Tires/Front: 80/100-21-51M
Tires/Rear: 120/80-19-62M
Dimensions:
Length: 86.4 in
Width: 32.5 in
Height: 51.4 in
Seat Height: 38.9 in
Wheelbase: 58.8 in
Ground Clearance: 14.7 in
Dry Weight: 219 lb
Fuel Capacity: 1.8 gal



YZ250F



SPECS:
Model: YZ250F
Engine: 250cc liquid-cooled DOHC 4-stroke; 5 titanium valves
Bore Stroke: 77.0mm x 53.6mm
Compression Ratio: 13.5:1
Carburetion: FCR-MX37 x 1
Ignition: CDI
Transmission: Constant-mesh 5-speed; multiplate wet clutch
Final Drive: Chain Drive
Chassis:
Suspension/Front: Speed-Sensitive System inverted fork; fully adjustable, 11.8-in travel
Suspension/Rear: Fully adjustable single shock; 12.0-in travel
Brakes/Front: Hydraulic single disc brake, 250mm
Brakes/Rear: Hydraulic single disc brake, 245mm
Tires/Front: 80/100-21-51M
Tires/Rear: 100/90-19-57M
Dimensions:
Length: 85.1 in
Width: 32.5 in
Height: 51.2 in
Seat Height: 38.8 in
Wheelbase: 57.8 in
Ground Clearance: 14.6 in
Dry Weight: 204 lb
Fuel Capacity: 1.8 gal


WR450F



SPECS:
Model: WR450F
Engine: 449cc liquid-cooled DOHC 4-stroke; 5 titanium valves
Bore Stroke: 95.0mm x 63.4mm
Compression Ratio: 12.3:1
Carburetion: FCR-MX39 x 1
Ignition: CDI
Transmission: Constant-mesh 5-speed; multiplate wet clutch
Final Drive: Chain Drive
Chassis:
Suspension/Front: Inverted fork; fully adjustable, 11.8-in travel
Suspension/Rear: Single shock; fully adjustable, 12-in travel
Brakes/Front: Hydraulic single disc brake, 250mm
Brakes/Rear: Hydraulic single disc brake, 245mm
Tires/Front: 80/100-21 51M
Tires/Rear: 110/100-18 64M
Dimensions:
Length: 85.6 in
Width: 32.5 in
Height: 51.0 in
Seat Height: 38.6 in
Wheelbase: 58.5 in
Ground Clearance: 14.4 in
Dry Weight: 248 lb
Fuel Capacity: 2.1 gal



YZ250



SPECS:
Model: YZ250
Engine: 249cc liquid-cooled 2-stroke; reed-valve inducted
Bore Stroke: 66.4 x 72.0mm
Compression Ratio: 9.2 – 10.9:1
Carburetion: PWK38S X 1
Ignition: CDI
Transmission: Constant-mesh 5-speed; multiplate wet clutch
Final Drive: Chain Drive
Chassis:
Suspension/Front: Speed-Sensitive System inverted fork; fully adjustable, 11.8-in travel
Suspension/Rear: Fully adjustable single shock, 12.4-in travel
Brakes/Front: Hydraulic single disc brake, 250mm
Brakes/Rear: Hydraulic single disc brake, 245mm
Tires/Front: 80/100-21-51M
Tires/Rear: 110/90-19-62M
Dimensions:
Length: 85.7 in
Width: 32.6 in
Height: 51.4 in
Seat Height: 39.1 in
Wheelbase: 58.3 in
Ground Clearance: 15.0 in
Dry Weight: 212 lb
Fuel Capacity: 2.1 gal



KIDS YAMAHA DIRT BIKE

YZ85



SPECS:
Model: YZ85
Engine: 85cc liquid-cooled 2-stroke; reed-valve inducted
Bore Stroke: 47.5 x 47.8mm
Compression Ratio: 8.2:1
Carburetion: PWK28 x 1
Ignition: CDI
Transmission: Constant-mesh 6-speed; multiplate wet clutch
Final Drive: Chain Drive
Chassis:
Suspension/Front: Inverted fork; fully adjustable, 10.8-in travel
Suspension/Rear: Single shock; fully adjustable, 11.1-in travel
Brakes/Front: Hydraulic single disc brake, 220mm
Brakes/Rear: Hydraulic single disc brake, 190mm
Tires/Front: 70/100-17-40M
Tires/Rear: 90/100-14-49M
Dimensions:
Length: 71.7 in
Width: 30.9 in
Height: 45.7 in
Seat Height: 34 in
Wheelbase: 49.5 in
Ground Clearance: 13.8 in
Dry Weight: 146 lb
Fuel Capacity: 1.3 gal


If you are interested in the full range of Yamaha Dirt Bikes then check out Yamaha-motor.com.



An excellent place to find some great deals on Yamaha dirt bikes is Ebay Live Auctions. Click on any of these below to find out more.



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