KTM 690 Duke

KTM 690 Duke

2012 690 Duke
Manufacturer	KTM
Also called	620/640/690/690 or I/II/III/IV
Production	1994–1997 (I) 1998-2007 (II) 2008–2011 (III) 2012–2018(IV)
Assembly	Austria
Class	Supermoto or Naked
Engine	693 cc (42.3 cu in) single
Bore / stroke	105.0 mm × 80.0 mm (4.13 in × 3.15 in)
Compression ratio	12.6:1
Top speed	183.5–188.1 km/h (114.0–116.9 mph)
Power	73 bhp (54 kW) at 8,000 rpm 75 bhp (56 kW) for R
Torque	74 N⋅m (55 lbf⋅ft)
Ignition type	Digital, 3 modes twin spark
Transmission	6-speed, chain drive, slipper clutch
Frame type	Steel trellis with aluminium swingarm
Suspension	Front-WP 43 mm (1.7 in) inverted forks Rear-WP linkage-actuated gas charged shock adjustable spring preload
Brakes	Front-Single Brembo M50 four-piston radial-mounted caliper, 320 mm (13 in) rotor, Bosch 2-channel ABS Rear-240 mm (9.4 in) floating single-piston caliper
Tires	Metzeler MR77 Front-120/70-17 Rear-160/60-17
Wheelbase	1,470 mm (58 in)
Seat height	865 mm (34.1 in)
Weight	149.5 kg (330 lb) (dry) 160 kg (350 lb) (wet)
Fuel capacity	13.5 L (3.0 imp gal; 3.6 US gal)
Related	640, 690 Enduro

The KTM 690 Duke was a motorcycle developed for KTM's line of midrange single-cylinder engine supermoto, or naked motorcycles that began with the 1994 609 cc (37.2 cu in) displacement Duke 620 or Duke I, followed by the 1998 625 cc (38.1 cu in) Duke 640 or Duke II, followed by the 654 cc (39.9 cu in) Duke III, and finally the 690 cc (42 cu in) Duke IV made since 2012. Both the Duke III and Duke IV are called the 690 Duke^[1]

The Duke was KTM's first street bike, and first supermoto, having previously made only off-road and racing motorcycles. In 1998 KTM introduced the 640 Supermoto, so the Duke line became a more street oriented standard or streetfighter, while retaining some off-road characteristics like a relatively long suspension travel. Initially the Duke was KTM's entry level street bike, but later KTM partnered with Bajaj Auto to produce the 125 Duke, 200 Duke, and 390 Duke in India, placing the 600 cc class Dukes in the middle of their range. In 2005, KTM introduced the Super Duke to expand the range above the middle Duke, initially 999 cc (61.0 cu in) and later growing to 1,301 cc (79.4 cu in).