2008 KTM 690 Duke

Expanding the stable of 690 models, KTM has introduced the 690 Duke and 690 SMC for 2008. These are hard core, lightweight, powerful single-cylinder road bikes.

The 690 Duke, according to KTM is the most powerful street-legal single of all time with 65 horsepower from its 654cc powerplant. Unlike the big singles found in some competitors' machines, this 654cc unit is state-of-the-art, lightweight, compact and extremely potent.

A stiff, tubular space frame, fully adjustable suspension, and a low claimed wet weight (with no fuel) of 327 pounds, may make the Duke a canyon carver's dream come true.

Huge Brembo brakes, (four piston caliper gripping 320mm disc in front, and single piston caliper gripping 220mm in back) will haul the Duke down. Six gears will allow it to cruise comfortably at highway speed, but have the flexibility to deal aggressively with just about any situation.

The new 690 Duke complies with Euro 3 emissions standards, and also features a slipper clutch like many modern sportbikes.

 

KTM presents the 690 Duke, the ultimate single-cylinder naked bike! It's driven by the
most powerful, 65 HP (48 kW), street-legal single of all time, equipped with a superior street suspension and assembled with a discernible passion for design and technology.

ENGINE

Engine type	Single cylinder, 4-stroke
Displacement	654 cc
Bore x stroke	102 x 80 mm (4.01 x 3.15")
Performance (homologated)	48 kW @ 7500 rpm
Max. torque	67 Nm @ 5500 rpm
Compression ratio	11.8:1
Starter	E-Starter
Transmission	6 gears, dog-clutch engagement
Control	4 V / OHC with roller rocker levers
Lubrication	Pressure lubrication with 2 Eaton pumps
Engine lubrication	10W60
Primary drive	36:79
Final drive	16:40
Cooling	Liquid cooled
Clutch	APTC Wet multi-disc clutch, operated hydraulically
Motor Management	Keihin EMS with EPT (Electr. Power Throttle)

CHASSIS

Frame	Chromium-molybdenum trellis frame, powder-coated
Subframe	Aluminium 7020
Handlebar	Aluminium, Ø 28 /22 mm (1.10 / 0.87")
Front suspension	WP USD Ø 48 mm (1.89")
Rear suspension	WP monoshock
Suspension travel front / rear	140 / 140 mm (5.51 / 5.51")
Front brake	Brembo 4-piston radially bolted caliper, brake disc Ø 320 mm (12.6")
Rear brake	Brembo single-piston floating caliper, brake disc Ø 220 mm (8.66")
Rims, front / rear	3.5 x 17"; 5 x 17"
Tires, front / rear	120/70 R 17"; 160/60 R 17"
Chain	X-Ring 5/8 x 1/4"
Battery	12 V / 8.6 Ah
Main silencer	Stainless steel underfloor silencer with integrated catalytic converter
Steering head angle	63.5°
Trail	115 mm (4.53")
Wheel base	1472±10 mm (57.95±0.39")
Ground clearance (unloaded)	155 mm (6.1")
Seat height	865 mm (34.06")
Fuel capacity	approx. 13.5 liters / 2.5 liters reserve (3.56 / 0.66 gal)
Weight (no fuel)	approx 148.5 kg (327.4 lbs)