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Yamaha SR 400 (1981-82) vs KTM 990 Super Duke (2004)

Comparison technical specifications


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1981 Yamaha SR 400
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2004 KTM 990 Super Duke
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Make: Yamaha KTM
Model: SR 400 990 Super Duke
Years: 1981-82 2004
Engine: Four stroke, single cylinder, SOHC, 2 valves per cylinder. Four stroke, 75°V-twin cylinder, DOHC, 4 valves per cylinder
Capacity: 399 cc / 24.3 cu-in 999.8 cc / 60.9 cu-in
Bore x Stroke: 87 х 67.2 mm 101 x 62.4mm
Compression Ratio: 8.5:1 11.5:1
Cooling System: Air cooled Liquid cooling,
Lubrication: Dry sump Dry-sump lubrication with 2 rotor pumps
Induction: BSR33 carburetor Electronic fuel injection / electric
Ignition: CDI Contactless, controlled, fully electronic ignition system with digital ignition timing adjustment
Starting: Kick Electric
Max Power: 27 hp / 17.1 KW @ 7000 rpm 88 kW / 120 hp @ 9000 rpm
Max Torque: 27.4 Nm / 6.3 kgf-m @ 6500 rpm 100 Nm @ 7000 rpm
Clutch: Wet, Multiple Disc Wet multi-disc clutch, operated hydraulically
Transmission: 5 Speed 6 Speed
Final Drive: Chain Chain, X-Ring 5/8 x 5/16"
Frame: Steel Double Cradle Chromium-Molybdenum trellis frame, powder-coated Subframe Aluminium Handlebar Aluminium Ø 28/22 mm (1.89"), tapered
Front Suspension: 35mm Telescopic fork 48mm WP Upside down adjustable
Front Wheel Travel: 105 mm / 4.1 in 135 mm / 5.3 in
Rear Suspension: Dual shocks, 5-way adjustable preload WP shock, fully adjustable
Front Brakes: Single disc 2x 320mm discs 4 piston calipers
Rear Brakes: Drum Single 240mm disc 1 piston caliper
Front Tyre: 3.50-19 120/70 ZR17
Rear Tyre: 4.00-16 180/55 ZR17
Trail: 111 mm / 4.4 in 103 mm / 4.0 in
Wheelbase: 1410 mm / 55.5 IN 1438 mm / 56.6 in
Seat Height: 790 mm / 30.9 in 855 mm / 33.6 in
Ground Clearance: 130 mm / 5.1 in 165 mm / 6.4 in
Fuel Capacity: 12 Litres / 3.2 gal 18.5 Litres / 4.8 gal