14 August. Friday 2026
Yamaha YZ490 - 1987 Specifications and Reviews
The 1987 Yamaha YZ490 is a high-performance motocross machine designed for experienced riders seeking raw power and aggressive trail capability. Its potent 490cc single-cylinder engine delivers 55 horsepower with impressive torque characteristics, making it best known for dominating rough terrain and competitive off-road racing. The lightweight steel frame and responsive handling make it an ideal choice for serious enthusiasts.
1987
General information | |
| Category | Cross / motocross |
| Year | 1987 |
| Model | Yamaha YZ490 |
Engine and Transmission Specifications | |
| Clutch | wet plate |
| Transmission typefinal drive | Chain |
| Gearbox | 5-speed |
| Cooling system | Air |
| Fuel system | Carburettor |
| Power | 55.00 |
| Stroke | 2 |
| Engine type | Single cylinder |
| Capacity: | 490.00 ccm (29.90 cubic inches) |
| | |
Physical measures and capacities | |
| Dry weight | 107.0 kg (236.0 pounds) |
| | |
Yamaha YZ490 dimensions and frame | |
| Rear brakes | Expanding brake (drum brake) |
| Front brakes | Single disc |
| Frame type | steel |
Speed and acceleration | |
| Power/weight ratio | 0.5138 HP/kg |
Other specs | |
| Maintenance | Find parts, fluids, filters, maintenance tools and service items on eBay |
| Color options | red seat, white tank and plastics |
Performance Profile & Rider Fit
55 hp
Peak Power
Best For
Track10%
City6%
Cornering15%
Daily Riding4%
Touring2%
Passenger1%
Rider Profile
| Best For | For experienced, fit motocross riders only. The brutal, abrupt power of this big-bore air-cooled two-stroke will punish anyone but a seasoned expert. |
| Purpose | Pure competition motocross. Built to blast berms, launch jumps and dominate off-road tracks - no compromises for road or trail-riding use. |
| Rider Fit | Tall, narrow and spartan at just 107kg dry. Long-travel suspension, aggressive ergonomics and no comfort features; a physical bike that demands muscle and stamina. |
| Character | A raw, explosive 490cc two-stroke thumper - notoriously wild power delivery and vibration. Light, nimble and intimidating, an old-school motocross brute. |
| Not Ideal For | Not for beginners, commuters, or anyone wanting road/street use. No lights, drum rear brake, no passenger provision and zero comfort for touring or daily riding. |
Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.
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Rider Reviews
Total comments: 1
MotorcycleDB Review
The 1987 Yamaha YZ490 is a classic off-road motorcycle known for its powerful engine and excellent handling. This bike features a 499cc engine that delivers strong and consistent power, making it a great choice for motocross and trail riding. The suspension and handling of the YZ490 are top-notch, providing a smooth and stable ride over rough terrain. The sturdy build quality of this bike ensures that it can handle the rigors of off-road riding with ease. Overall, the 1987 Yamaha YZ490 is a reliable and capable off-road motorcycle that has stood the test of time. For off-road enthusiasts, the 1987 Yamaha YZ490 is a sought-after classic with its powerful engine and excellent handling. With a 499cc engine, this bike delivers consistent and strong power, making it ideal for motocross and trail riding. The YZ490's suspension and handling are top-notch, providing a smooth and stable ride over rough terrain. Its durable construction ensures that it can withstand the demands of off-road riding, making it a reliable choice for riders looking for a capable and enduring off-road motorcycle.Add a Comment
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