The 2008 KTM 690 Duke is a single-cylinder, liquid-cooled motorcycle with a 653.7 cc engine capable of producing 65 horsepower and 65 Nm of torque. The bike uses a Keihin EMS with Electric Power Throttle induction and Kokusan DC-CDI ignition, and has a wet sump lubrication system with synthetic 15W-50 oil. It has a six-speed transmission with a hydraulically operated APTC multi-disc wet clutch and chain X-Ring final drive. The frame is made from chromoly trellis and has a powder-coated aluminum subframe. Suspension is provided by WP upside-down forks at the front and a WP monoshock at the rear with Pro-lever deflector. Braking is achieved using a single 320 mm floating disc at the front and a single 240 mm floating disc at the rear, both with single-piston calipers. The bike has a 63.5 degree steering head angle and a 1472 mm wheelbase, with a seat height of 865 mm and a dry weight of 148.5 kg. The fuel tank capacity is 13.5 litres.
Technical specifications:
Make Model: KTM 690 Duke
| Year | 2008 |
|---|---|
| Engine | Four stroke, single cylinder, SOHC, 4 valves |
| Capacity | 653.7 cc / 39.91 cu in |
| Bore x Stroke | 102 x 80 mm |
| Cooling System | Liquid Cooled |
| Compression Ratio | 11.8:1 |
| Exhaust | Stainless steel silencer with regulated catalytic converter |
| Lubrication | Wet sump |
| Engine Oil | Synthetic, 15W-50 |
| Induction | Generation Keihin EMS with EPT (Electric Power Throttle) |
| Ignition | Kokusan DC-CDI |
| Spark Plug | NGK LKAR 8AI – 9 |
| Battery | 12 V / 11.2 Ah |
| Starting | Electric |
| Max Power | 46 kW / 65 hp @ 7500 rpm |
| Max Torque | 65 Nm / 6.6 kgf-m / 47.9 ft-lb @ 6550 rpm |
| Clutch | APTC multi-disc wet clutch, hydraulically operated |
| Transmission | 6 Speed |
| Primary Drive Ratio | 36:79 |
| Gear Ratios | 1st 14:35 / 2nd 16:28 / 3rd 21:28 / 4th 21:23 / 5th 23:22 / 6th 23:20 |
| Final Drive | Chain X-Ring 5/8 x 5/16″ |
| Frame | Chromoly trellis frame, powder-coated, aluminium sub frame |
| Front Suspension | WP Upside-down forks, 4860 ROMA |
| Front Wheel Travel | 140 mm / 5.5 in |
| Rear Suspension | WP monoshock, 4618 with Pro-lever deflector |
| Rear Wheel Travel | 140 mm / 5.5 in |
| Front Brakes | Single 320 mm floating disc, radially screwed four-piston brake caliper |
| Rear Brakes | Single 240 mm floating disc, single piston caliper |
| Front Rim | Cast aluminium wheels 3.5 x 17″ |
| Rear Rim | Cast aluminium wheels 5.5 x 17″ |
| Front Tyre | 120/70 – R17 |
| Rear Tyre | 160/60 – R17 |
| Steering Head Angle | 63.5 degrees |
| Trail | 100.7 mm / 3.96 in |
| Wheel base | 1472 mm / 57.9 in |
| Ground Clearance | 155 mm / 6.1 in |
| Seat Height | 865 mm / 34 in |
| Dry Weight | 148.5 kg / 327 in |
| GVWR | 350 kg / 772 lbs |
| Engine Oil Capacity | 1.7 L / 1.8 US qt / 1.5 Imp qt |
| Fuel Capacity | 13.5 Litres / 3.6 US gal / 3.0 Imp gal |
