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Motocross Bikes

1990KTM 500 MX

★ 4.0
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The 1990 KTM 500 MX is a heavyweight motocross machine built for aggressive racing and experienced riders. Its potent 498cc single-cylinder engine delivers 65 horsepower and strong torque, making it best known for dominating hard-packed tracks and demanding terrain. The lightweight 103kg frame and liquid cooling ensure sustained performance in competitive environments.

Capacity
498.0 ccm
Engine
Single
Gearbox
Not on record
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Dry weight
103.0 kg
Seat height
965 mm
Power
65.0 HP (47.8 kW)
⇄ Compare with another bike + Add to garage All model years

How it rides

Editorial estimate from the spec sheet - not lab tested
Speed 62Agility 92Comfort 25Off-road 97Touring 10Road manners 20
Off-road & trail97%
Cornering88%
City riding5%
Daily riding5%
Touring8%
Two-up2%
Track40%
Best for
Built purely for motocross competition, delivering explosive big-bore two-stroke power and light weight for racing on dirt tracks.
Built for
A raw, aggressive, hard-hitting machine with classic big-bore two-stroke character that rewards aggressive, committed riding.
Not ideal for
This is not a bike for commuting, touring, passengers, or riders wanting a mellow, forgiving ride.

Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.

Will it fit you?

Worked out in your browser - nothing is sent to us
At 965mm, a rider of 68.9" with a 31" (estimated) inseam will not reach the ground comfortably on the 1990 KTM 500 MX, with a cramped knee angle of around 85 degrees and an upright riding position.

Assumes about 30mm of suspension sag once seated. This is an approximation from category-typical geometry, not a measurement of this bike or of you - sit on one before you buy.

More bikes at over 900 mm — Sky High →

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Full specifications

Engine
Capacity
498.0 ccm
Power
65.0 HP (47.8 kW)
Torque
80.0 Nm (8.2 kgf-m)
Engine type
Single
Power/weight ratio
0.6311 HP/kg (dry)
Bore x stroke
89.0 x 80.0 mm
Cooling system
Liquid
Fuel system
Carburettor
Ignition
motoplat 176-1
Transmission
Final drive
Chain
Clutch
wet 9 plates
Dimensions & weight
Seat height
965 mm
Dry weight
103.0 kg
Fuel capacity
12.10 litres
Ground clearance
381 mm
Chassis & suspension
Rear suspension
WP
Front wheel travel
300 mm
Rear wheel travel
340 mm
Brakes & wheels
Front brakes
Single disc
Rear brakes
Single disc
Other
Modifications compared to previous model
bored by 2.5 mm, new multi adjustable fork

Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.

Rider Reviews

4.0
★★★★☆
Rider rating
MotorcycleDB

The 1990 KTM 500 MX is a powerful and versatile off-road motorcycle that was well ahead of its time. With its 495cc liquid-cooled engine and rugged suspension, this bike is capable of handling the toughest terrain with ease. The lightweight frame and nimble handling make it a favorite among motocross enthusiasts, while the smooth power delivery and wide-ratio transmission make it suitable for trail riding as well. The 1990 KTM 500 MX is a true classic that continues to impress riders with its performance and reliability.

In addition to its impressive performance, the 1990 KTM 500 MX also has a timeless design that has aged well over the years. The bold graphics and striking color scheme give it a distinctive look that stands out on the track or trail. With its durable construction and legendary reputation, this bike has become a sought-after collectible for vintage motorcycle enthusiasts. Whether you're a seasoned rider or a collector, the 1990 KTM 500 MX is a must-have for anyone who appreciates the thrill of off-road riding.

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Common questions

What is the engine size of the KTM 500 MX?

The 1990 KTM 500 MX has a Capacity of 498.0 ccm (30.39 cubic inches).

What engine power does the KTM 500 MX have?

The 1990 KTM 500 MX has a Power of 65.0 HP (47.8 kW).

What is the torque of the KTM 500 MX?

The 1990 KTM 500 MX has a Torque of 80.0 Nm (8.2 kgf-m or 59.0 ft.lbs).

How much does the KTM 500 MX weigh?

The 1990 KTM 500 MX has a Dry weight of 103.0 kg (227.1 pounds).

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