KTM 690 Duke R (2011) vs Yamaha XS 250 DOHC (1984-) vs Yamaha TT 600 (1985-87)
Comparison technical specifications
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| Make: | KTM | Yamaha | Yamaha |
| Model: | 690 Duke R | XS 250 DOHC | TT 600 |
| Years: | 2011 | 1984- | 1985-87 |
| Engine: | Four stroke, single cylinder, SOHC, 4 valves | Four stroke, 180° parallel twin, DOHC, 2 valves per cylinder | Four stroke, single cylinder, SOHC, 4 Valve |
| Capacity: | 690 cc / 42.1 cu in | 248 cc / 15.2 cu-in | 595 cc / 36.5 cu-in |
| Bore x Stroke: | 102 x 84.5 mm | 56 х 50.6 mm | 95 x 84 mm |
| Cooling System: | Liquid Cooled | Air cooled | Air cooled |
| Compression Ratio: | 12.5:1 | 10.1:1 | 8.5:1 |
| Lubrication: | Wet sump | Wet sump | Dry sump |
| Induction: | Generation Keihin EMS with EPT (Electric Power Throttle) | 2x 32mm Mikuni carburetors | 27mm Dual stage Teikei Y27PVX1 carburetor |
| Ignition: | Kokusan DC-CDI | Coil and cb | CDI |
| Starting: | Electric | Kick | Kick |
| Max Power: | 52.2 kW / 70 hp @ 7500 rpm | 30 hp / 22.3 kW @ 10000 rpm | 45 hp / 34 kW @ 6500 rpm |
| Max Torque: | 69.8 Nm / 7.1 kgf-m / 51.6 ft-lb @ 6550 rpm | 2.2 kgf-m / 15.2 lb-ft @ 8500 rpm | 50 Nm / 4.7 kgf-m @ 5500 rpm |
| Transmission: | 6 Speed | 6 Speed | 5 Speed |
| Final Drive: | Chain X-Ring 5/8 x 5/16" | Chain | Chain |
| Front Suspension: | WP Upside-down forks, 4860 ROMA | Telescopic forks | 43mm Telescopic forks |
| Rear Suspension: | WP monoshock, 4618 with Pro-lever deflector | Dual shocks, swing arm, 5-position preload adjustable | Monocross single shock 20-way compression, reload and rebound adjustment. |
| Front Brakes: | Single 320 mm floating disc, radially screwed four-piston brake caliper | Single 267mm disc | Single 267mm disc |
| Rear Brakes: | Single 240 mm floating disc, single piston caliper | 178mm Drum | 150mm Drum |
| Front Tyre: | 120/70 - R17 | 3.00-18 | 3.00-21 |
| Rear Tyre: | 160/60 - R17 | 3.50-18 | 4.60-18 |
| Dry Weight: | 148.5 kg / 327 in | 165.5 kg / 365 lbs | 138 kg / 304.2 lbs |
| Fuel Capacity: | 13.5 Litres / 3.6 US gal / 3.0 Imp gal | 14 Litres / 3.7 US gal | 13 Litres / 3.4 US gal |