KTM 690 Duke
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
| Specifications by model/year | ||||||
|---|---|---|---|---|---|---|
| Year | 1994–1997 | 1998–2007 | 2008–2011 | 2012 | 2013 | 2016–2018 |
| Model | 620 Duke I | 640 Duke II | 690 Duke III | 690 Duke IV | 690 Duke R | |
| Displacement | 609 cc (37.2 cu in) | 624.6 cc (38.12 cu in) | 653.7 cc (39.89 cu in) | 690 cc (42 cu in) | 690 cc (42 cu in) | 693 cc (42.3 cu in) |
| Engine | Liquid cooled, 4-valve SOHC 4 stroke single | |||||
| Starting | Kick | Kick & Electric | Electric | Electric & Auto-decompress | ||
| Bore × stroke | 101 mm × 76 mm (4.0 in × 3.0 in) | 101 mm × 78 mm (4.0 in × 3.1 in) | 102.0 mm × 80.0 mm (4.02 in × 3.15 in) | 102.0 mm × 84.5 mm (4.02 in × 3.33 in) | 105.0 mm × 80.0 mm (4.13 in × 3.15 in) | |
| Compression | 10.4:1 | 11.5:1 | 11.7:1 | 12.6:1 | ||
| Fuel system | Dell'Orto carburetor (49-state) 38 mm Edelbrock Qwik Silver II (CARB) |
Mikuni BST 40mm carburetor | Carburetor (2008) Keihin EFI (2009–2011) |
Keihin EFI 3 modes | EFI Keihin 50 mm throttle body | |
| Ignition | Kokusan contactless DC-CDI | Kokusan DC-CDI Digital, 3 Modes, Single Spark plug. | Digital, 3 modes, twin spark | Digital, 3 modes, twin spark | ||
| Transmission | 5-speed, chain drive | 6 speed, chain drive, Slipper Clutch | 6-speed, chain drive, slipper clutch | |||
| Frame | Chromoly Steel trellis, aluminum swingarm | |||||
| Front brake | Brembo 4-piston caliper, 320 mm disc | Single Brembo four-piston radial caliper, 320 mm disc | Single Brembo four-piston radial caliper, 320 mm disc | Single four-piston radial caliper, 320 mm disc, ABS | Single four-piston Brembo M50 radial caliper, 320 mm disc, ABS | Single Brembo M50 four-piston radial-mounted caliper, 320 mm rotor, Bosch two-channel ABS |
| Rear brake | Brembo 1-piston caliper, 220 mm disc | Brembo caliper, 240 mm disc | Single four-piston caliper, 240 mm disc | 240 mm floating single-piston caliper | ||
| Front suspension | WP 4054, Top Adjuster, telescopic fork | WP 43 inverted fork | 48 mm WP inverted fork, adjustable preload, compression, rebound, 140 mm (5.6 in) travel | WP inverted fork 135 mm (5.3 in) travel | WP inverted fork, adjustable preload, compression, rebound, 150 mm (5.9 in) travel | WP 4 3mm inverted fork |
| Rear suspension | WP monoshock 4681 BAVP, Single Adjuster | WP monoshock | WP monoshock, adjustable preload, compression, rebound, Pro-Lever, 140 mm (5.6 in) travel | WP shock, adjustable preload only, 135 mm (5.3 in) travel | WP shock, adjustable preload, compression, rebound, 150 mm (5.9 in) travel | WP linkage-actuated gas-charged shock adjustable spring preload |
| Wheels | Akront wire-spoke, 17 × 3.5" front 17 × 4.5" rear |
17 × 3.5" front 17 × 4.5" rear |
17-inch 5 spoke Marchesini forged Alum wheels | 17-inch, 10-spoke forged-aluminum | ||
| Tires | Pirelli MT60 radial |
120/70-17 front 160/70-17 rear |
Dunlop Sportmax GPR 120/70-ZR17 front 160/60-ZR17 rear |
Michelin Pilot Power | Metzeler MR77 120/70-17 front 160/60-17 rear | |
| Rake, trail | 26.5°, 109 mm (4.3 in) | 26.5°, 115 mm (4.53 in) | 26.5° | |||
| Wheelbase | 1,460 mm (57 in) | 1,470 mm (57.9 in) | ||||
| Seat height | 890 mm (35 in) | 900 mm (35 in) | 876 or 895 mm (34.5 or 35.25 in) | 835 mm (32.9 in) | 865 mm (34.1 in) | |
| Dry weight | 152 kg (335 lb) | 151 kg (334 lb) | 149.5 kg (330 lb) (claimed) | |||
| Wet weight | 150 kg (340 lb) | 161 kg (355 lb) | 160.6 kg (354.0 lb) | 160 kg (352 lb) (claimed) | ||
| Fuel capacity | 10.3 L (2.3 imp gal; 2.7 US gal) | 11.5 L (2.5 imp gal; 3.0 US gal) | 13.5 L; 2.97 imp gal (3.57 US gal) | |||
| Performance | ||||||
| Power | 40 kW (54 bhp) @ 7,000 rpm | 44.5–45.9 kW (59.7–61.6 hp) @ 7,600 rpm | 50 kW (67 hp) (claimed) | 51.5 kW (69.1 hp) (claimed) | 54 kW (73 hp) (claimed) | |
| Torque | 60 N⋅m (44 lb⋅ft) @ 5,500 rpm | 62.31–65.08 N⋅m (45.96–48.0 lb⋅ft) @ 5,425 rpm | 70.1 N⋅m (51.7 lb⋅ft)(claimed) | 75 N⋅m (55 lb⋅ft)(claimed) | ||
| Fuel consumption | 15.4 km/L (44 mpg‑imp; 36 mpg‑US) | 49.7–51 mpg‑US (4.73–4.61 L/100 km; 59.7–61.2 mpg‑imp) | ||||
| Top speed | 105 mph (169 km/h) | 120 mph (190 km/h) | 183.5–188.1 km/h (114–116.9 mph) | |||
| 0 to 60 mph (0 to 97 km/h) seconds | 4.8 | 3.6–3.92 | ||||
| 0 to 1⁄4 mi (0.00 to 0.40 km) | 13.1 @ 156 km/h (97 mph) | 12.28 @ 168.42 km/h (104.65 mph) 12.35 @ 164.09 km/h (101.96 mph) |
||||
| Braking 60 to 0 mph (97 to 0 km/h) | 36 m (118 ft) | 39.3 m (128.9 ft) | ||||