Yamaha IT 490 1983 - Specifications & Review

IT 490

Article Complete Info

Articleid860186
CategoryEnduro-offroad
MakeYamaha
ModelIT 490
Year1983

Chassis, Suspension, Brakes & Wheels

FrontbrakesExpanding brake (drum brake)
Frontsuspension43mm Telescopic adjustable forks
Frontwheeltravel300 mm (11.8 inches)
RearbrakesExpanding brake (drum brake)
RearsuspensionMono shock, adjustable spring preload and rebound damping
Reartyre150/80-18
Rearwheeltravel300 mm (11.8 inches)

Engine & Transmission

Borexstroke87.0 x 82.0 mm (3.4 x 3.2 inches)
Compression4.9:1
CoolingsystemAir
Displacement487.00 ccm (29.72 cubic inches)
EnginedetailsSingle cylinder, two-stroke
FuelsystemCarburettor. 38mm Mikuni
Gearbox5-speed
IgnitionCDI
Power35.00 HP (25.5 kW)) @ 6000 RPM
Torque42.03 Nm (4.3 kgf-m or 31.0 ft.lbs) @ 5500 RPM
TransmissiontypefinaldriveChain

Other Specifications

ColoroptionsBlue
StarterKick

Physical Measures & Capacities

Dryweight125.0 kg (275.6 pounds)
Fuelcapacity13.60 litres (3.59 gallons)
Powerweightratio0.2800 HP/kg

About Yamaha IT 490 1983

The 1983 Yamaha IT 490 stands as a testament to the golden era of off-road motorcycles, capturing the spirit of adventure and rugged terrain exploration. Positioned as a formidable contender in the Enduro-offroad category, this bike was designed for those who crave the thrill of tackling trails and conquering challenging landscapes. With its distinctive blue livery and aggressive styling, the IT 490 not only looks the part but also delivers a performance that resonated with off-road enthusiasts of its time.

At the heart of the IT 490 lies a powerful 487cc single-cylinder, two-stroke engine, which is engineered to provide a robust 35 horsepower at 6,000 RPM. This impressive power output, combined with a torque of 42.03 Nm at 5,500 RPM, ensures that riders experience exhilarating acceleration and responsiveness on varied terrains. The air-cooled engine, paired with a 38mm Mikuni carburettor, provides a visceral riding experience with a signature two-stroke roar. The 5-speed gearbox delivers seamless shifts, allowing riders to harness this power effectively while navigating through tight trails or open fields, making it a thrilling companion for both competitive events and leisurely rides alike.

The IT 490 is equipped with a host of features that enhance its off-road capabilities while ensuring rider comfort. Its 43mm telescopic adjustable front forks and mono shock rear suspension, both offering 300mm of travel, provide excellent shock absorption and stability, allowing riders to tackle bumpy trails with confidence. The drum brakes at both the front and rear deliver reliable stopping power, essential for sudden descents or challenging obstacles. Weighing in at a manageable 125 kg (275.6 lbs) and featuring a fuel capacity of 13.6 liters (3.59 gallons), the IT 490 strikes a balance between agility and endurance, making it ideal for long rides into the backcountry.

Pros and Cons of the 1983 Yamaha IT 490:

Pros:

  1. Powerful Engine Performance: The robust two-stroke engine delivers strong acceleration and torque, making it great for tackling steep inclines and rough terrains.
  2. Exceptional Suspension: With 300mm of travel in both the front and rear suspension, the IT 490 offers superior handling and comfort over uneven surfaces.
  3. Lightweight Design: Weighing just 125 kg, this bike provides excellent maneuverability, allowing riders to navigate tight trails with ease.

Cons:

  1. Limited Brake Technology: The drum brakes, while effective, may not provide the same level of stopping power or modulation as modern disc brakes, especially in wet conditions.
  2. Kick Start Only: The absence of an electric starter may deter some riders who prefer the convenience of modern starting systems, particularly in challenging environments.
  3. Two-Stroke Maintenance: As a two-stroke engine, it requires regular maintenance and attention to fuel mixtures, which can be a drawback for less experienced riders.

In summary, the 1983 Yamaha IT 490 is a classic off-road machine that encapsulates the thrill of adventure riding. With its powerful engine, agile handling, and rugged design, it remains a beloved choice for enthusiasts seeking a slice of motorcycle history.

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