The 1997 KTM 620 Duke is a menacing machine that lives for three things and three things only: wheelies, stoppies, and rorty romps through the gearbox.
This 609cc single-cylinder powerhouse is a direct descendant of the hybrid racebikes used in the early-’80s “Superbikers” shows, where it was run on a half-dirt, half-asphalt course. The result is a bike that thrives on raw power and agility, with a chassis based heavily on KTM’s off-road frame and a polished aluminum swingarm.
But be warned: the Duke is not for the faint of heart. It’s a bike that rewards its rider with a thrilling experience, but will also leave them breathless and grinning from ear to ear. So, if you’re ready to push the limits of what a street bike can do, the KTM 620 Duke is the ultimate adrenaline rush.
Key Specifications
Engine Type
Four stroke, single cylinder, SOHC, 4 valves
Engine Capacity
609 cc / 37.2 cu in
Max Power
40.1 kw / 55 hp
Max Torque
60 Nm / 6.1 kgf-m / 44.3 lb-ft @ 5500 rpm
Fuel Tank Capacity
2.7 US gallons / 10.3 L
Seat Height
35.2 inches / 894 mm
*n/a – information not provided by manufacturer
All Specifications
Make & Model
Model
KTM 620 Duke
Year
1997
Engine
Engine Type
Four stroke, single cylinder, SOHC, 4 valves
Displacement
609 cc / 37.2 cu in
Bore x Stroke
101 x 76 mm
Compression Ratio
10.4:1
Max Horsepower
40.1 kw / 55 hp
Max Torque
60 Nm / 6.1 kgf-m / 44.3 lb-ft @ 5500 rpm
Engine Management System
Dell’Orto PHM 40 SD carburetor
Cooling System
Liquid cooled
Performance
Top Speed
169 km/h / 105 mph
*n/a – information not provided by manufacturer
Transmission
Gearbox
5 Speed
Final Drive
Chain
Electrical & Electronics System
Starter
Kick
Chassis & Suspension
Front Suspension
White Power 4054 Top Adjuster
Front Suspension Travel
5.6 inches / 142 mm
Rear Suspension
White Power monoshock 4681 BAVP Single Adjuster
Wheels & Brakes
Front Tire Size
120/70 – 17 Pirelli MT60
Rear Tire Size
160/60-17 Pirelli MT60
Front Brakes
Single 320 mm disc, 4 piston caliper
Rear Brakes
Single 220 mm disc, 1 piston caliper
Dimension & Weights
Seat Height
35.2 inches / 894 mm
Fuel Tank Capacity
2.7 US gallons / 10.3 L
Dry Weight
145 kg / 320 lbs
Features
609cc single-cylinder engine
40mm WP Roma fork
Brembo four-piston caliper
Polished aluminum swingarm
3-gallon fuel tank
Black plastic tank
Gray-on-black checkerboard pattern shrouds
Plastic shrouds with faux-carbon fiber finish
Dark metallic-gray paint on side panels and rear fender
Passenger grabrails
Subfender/chain-guard
Roadrace-quality Brembo brakes
Four-piston caliper capable of severe stoppage
Dutch-made WP Roma fork
Mated WP Roma fork and Brembo four-piston caliper
Similar roadracing front brakes to those used in early-’80s “Superbikers” shows
Shortened suspension
Big-bore two-stroke motocrossers with tlat-track tires
Hybrid racebike design
Direct descendant of early-’80s made-for-TV “Superbikers” shows
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*We strive to provide the most comprehensive and accurate specifications possible. However, certain details may not be available if the manufacturer did not disclose them or if the information is no longer publicly accessible. If you find any discrepancy with any data on this site, please feel free to let us know at contact@throttlecraze.com
