Yamaha IT 490 (1980)

The Yamaha IT 425 motorcycle was produced in 1980 and has a two stroke, single cylinder, read valve engine with a capacity of 425 cc / 25.9 cu-in. It has a 38mm VM38SS Mikuni carburetor and CDI ignition. The kick starting bike can produce a maximum power of 36.9 hp / 27.5 kW @ 6000 rpm (rear tyre) and a maximum torque of 31 lb-ft / 4.23 kg-m @ 5500 rpm. The 5-speed transmission and the chain final drive ensure a smooth ride. The front suspension consists of 43mm Telescopic adjustable forks that offer a 300mm wheel travel, while the rear suspension is a Mono shock with adjustable spring preload and rebound damping that also has a 300mm wheel travel. The drum brakes on both the front and rear wheels, with respective tyre sizes of 3.00 -21 and 150/80 -18, provide good stopping power. The bike has a rake of 29.5 degrees, a trail of 125 mm / 4.9 in, a wheelbase of 1430 mm / 56.2 in, and a ground clearance of 285 mm / 11.2 in. The dry weight is 111 kg / 244.7 in, and the fuel capacity is 13.6 Litres / 3.5 US gal. Overall, the Yamaha IT 425 motorcycle is a powerful and reliable machine that can withstand a variety of terrains.


Technical specifications:

Make Model: Yamaha IT 425

Year: 1980


Engine: Two stroke, single cylinder, read valve
Capacity: 425 cc / 25.9 cu-in
Bore x Stroke: 85 x 75 mm
Cooling System: Air cooled
Compression Ratio: 7.3;1
Induction: 38mm VM38SS Mikuni carburetor
Ignition: CDI
Starting: Kick
Max Power: 36.9 hp / 27.5 kW @ 6000 rpm (rear tyre
Max Torque: 31 lb-ft / 4.23 kg-m @ 5500 rpm
Transmission: 5 Speed
Final Drive: Chain
Front Suspension: 43mm Telescopic adjustable forks, 300mm wheel travel
Front Wheel Travel: 250 mm / 9.8 in
Rear Suspension: Mono shock, adjustable spring preload and rebound damping, 300mm wheel travel

Rear Wheel Travel: 250 mm / 9.8 in
Front Brakes: Drum
Rear Brakes: Drum
Front Tyre: 3.00 -21
Rear Tyre: 150/80 -18
Rake: 29.5 degrees
Trail: 125 mm / 4.9 in
Wheelbase: 1430 mm / 56.2 in
Ground Clearance: 285 mm / 11.2 in
Dry Weight: 111 kg / 244.7 in
Fuel Capacity: 13.6 Litres / 3.5 US gal

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