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Enduro - Offroad · 1998

620 EGS

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MotoLibrary Score
50 /100 Balanced
Power/Weight
0.38 hp/kg
Top Speed
155 km/h
Torque
60 Nm
Engine
609 ccm

1998 KTM 620 EGS Technical Analysis & Specification Breakdown

Built around KTM's enduro - offroad motorcycle platform, the 1998 KTM 620 EGS features a 609 cc (37.2 cu in) liquid-cooled single cylinder, four-stroke configuration. In factory specification, peak output is rated at 50 HP (36.5 kW) at 7,250 rpm while maximum torque reaches 60 Nm (44.3 lb-ft) at 5,500 rpm, transferring power to the rear wheel through a 5-speed gearbox and chain final drive. With a specific output of 82.1 HP per liter and a 1,750 rpm working window between peak torque (5,500 rpm) and peak power (7,250 rpm), the engine character is indicating a tractable, stress-free state of tune focused on everyday usability and broad torque delivery.

On the scales, the 620 EGS measures 139 kg (306 lbs) wet (curb), translating to a power-to-weight ratio of 0.36 HP/kg (2.78 kg per horsepower). Rider ergonomics and chassis geometry center around a 940 mm (37 in) seat height — reflecting a long-travel chassis stance that favors ground clearance and off-pavement control. The 11-liter (2.9 US gal) fuel tank supports practical everyday commuting and weekend road stints, while factory top speed is listed at 155 km/h (96 mph).

Specific Output
82.1 HP/L
Power-to-Weight
0.36 HP/kg (2.78 kg/HP)
Power Band Window
5,500–7,250 rpm
Standover Height
940 mm (37 in)
Engine
Displacement 609.0 ccm (37.16 cubic inches)
Engine Type Single cylinder, four-stroke
Engine Details Single cylinder, four-stroke
Power 50.0 HP (36.5 kW)) @ 7250 RPM
Torque 60.0 Nm (6.1 kgf-m or 44.3 ft.lbs) @ 5500 RPM
Compression 10.4:1
Bore x Stroke 101.0 x 76.0 mm (4.0 x 3.0 inches)
Valves/Cylinder 4
Fuel System Carburettor. Dell´Orto PHM 40 SD
Fuel Control Single Overhead Cams (SOHC)
Ignition KDC-CDI
Cooling Liquid
Transmission
Gearbox 5-speed
Final Drive Chain (final drive)
Performance
Top Speed 155.0 km/h (96.3 mph)
Chassis
Front Suspension WP Telescopic forks, compression and rebound adjustable
Rear Suspension Single chock, preload, compression and rebound adjustable
Wheels & Brakes
Front Tyre 90/90-21
Rear Tyre 130/80-18
Front Brakes Single disc. Four-piston calipers.
Front Brake Ø 320 mm (12.6 inches)
Rear Brakes Single disc. Single-piston caliper.
Rear Brake Ø 220 mm (8.7 inches)
Dimensions & Weight
Dry Weight 131.0 kg (288.8 pounds)
Weight incl. 139.0 kg (306.4 pounds)
Power/Weight 0.3817 HP/kg
Seat Height 940 mm (37.0 inches) If adjustable, lowest setting.
Fuel Capacity 11.00 litres (2.91 US gallons)
Oil Capacity 2.10 litres (2.22 US quarts)
Other
Starter Electric & kick
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Power
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Torque
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Seat Height
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Weight
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Fuel Capacity
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Brakes
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Suspension
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Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
Rider Profile

Who Is This Bike For?

🟡
Intermediate
Requires some riding experience.
🌲
Best For
Off-Road & Adventure
📏
Seat Height
94 cm / 37 in
⚖️
Handling
Manageable weight for most riders
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