The 2018 KTM 690 Duke is a powerful motorcycle with a single cylinder, 4-stroke, SOHC, 4-valve engine that has a capacity of 690cc. It has a compression ratio of 12.7:1 and is liquid-cooled. The bike’s lubrication system has pressure lubrication with two oil pumps while its induction comes from a Keihin EFI throttle body. It uses contactless controlled fully electronic ignition with digital ignition adjustment and has an electric starting system with a CBTX9-BS 12V, 8.6Ah battery. The motorcycle’s maximum power is 54.4 kW / 74 hp @ 8000 rpm, while the maximum torque is 74 Nm / 7.5 kgf-m / 54.6 lb-ft @ 6500 rpm. The 690 Duke has a 6-speed transmission system with a chain final drive and 16:40 sprocket ratio. The frame is made of chrome-moly steel trellis, and its primary drive ratio is 36:79. The 690 Duke has a unique rear suspension system, WP Performance System emulsion with Pro Lever Linkage, and a front suspension system of WP Performance Systems Upside Down 4357. The bike has standard Bosch 9M two-channel ABS, which works with a Brembo braking system with a 320mm front disc and a 240mm rear disc. The 690 Duke weighs 148.5 kg / 327.4 lbs and has a fuel capacity of 14 litres / 3.7 US gal / 3.1 Imp gal.
Technical specifications:
Make Model: KTM 690 Duke
| Year | 2018 |
|---|---|
| Engine | Single cylinder, 4-stroke, SOHC, 4-valve |
| Capacity | 690 cc / 42.1 cu in |
| Bore x Stroke | 105 x 80 mm |
| Compression Ratio | 12.7:1 |
| Cooling System | Liquid cooled |
| Lubrication System | Pressure Lubrication with Two Oil Pumps |
| Induction | Keihin EFI, Throttle Body 50 mm |
| Spark Plugs | Inside: NGK LKAR9BI-10 Outside: NGK LMAR7DI-10 |
| Ignition | Contactless controlled fully electronic ignition with digital ignition adjustment |
| Starting | Electric |
| Battery | CBTX9-BS 12V, 8.6Ah |
| Max Power | 54.4 kW / 74 hp @ 8000 rpm |
| Max Torque | 74 Nm / 7.5 kgf-m / 54.6 lb-ft @ 6500 rpm |
| Clutch | APTC slipper clutch, hydraulically operated, antihopping |
| Transmission | 6-Speed |
| Gear Ratios | 1st 14:35 / 2nd 16:28 / 3rd 21:28 / 4th 21:23 / 5th 23:22 / 6th 23:20 |
| Final Drive | Chain, 16:40 |
| Primary Drive | 36:79 |
| Frame | Chrome-moly steel Trellis frame, aluminum powder coated sub-frame |
| Front Suspension | WP Performance Systems Upside Down 4357 |
| Front Wheel Travel | 135 mm / 5.3″ |
| Rear Suspension | WP Performance System emulsion with Pro Lever Linkage |
| Rear Wheel Travel | 135 mm / 5.3″ |
| Front Brakes | Single 320 mm disc, Brembo 4 piston fixed caliper, Bosch 9M two channel ABS |
| Rear Brakes | Single 240 mm disc, Brembo single piston floating caliper, Bosch 9M two channelABS |
| Front Wheel | 3.50 x 17″, cast aluminium |
| Rear Wheel | 5.00 x 17″, cast aluminium |
| Front Tyre | 120/70 – ZR17 M/C 58W TL |
| Rear Tyre | 160/60 – ZR17 M/C 69W TL |
| Rake | 26.5o |
| Wheelbase | 1466 mm / 57.7″ |
| Ground Clearance | 192 mm / 7.55″ |
| Seat Height | 835 mm / 32.9″ |
| Dry Weight | 148.5 kg / 327.4 lbs |
| Dry Weight | 148.5 kg / 327.4 lbs |
| Engine Oil Capacity | 1.7 Litres / 1.8 US qt / 1.5 Imp qt |
| Fuel Capacity | 14 Litres / 3.7 US gal / 3.1 Imp gal |
