Suzuki DR 750S Big (1987) vs KTM 690 Duke (2009) vs Suzuki Intruder M 1500 (2013-14) vs Suzuki RG 250 (1978-79) vs Suzuki Boulevard C109R (2010-11)
Comparison technical specifications
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| Make: | Suzuki | KTM | Suzuki | Suzuki | Suzuki |
| Model: | DR 750S Big | 690 Duke | Intruder M 1500 | RG 250 | Boulevard C109R |
| Years: | 1987 | 2009 | 2013-14 | 1978-79 | 2010-11 |
| Engine: | Four stroke, single cylinder, SOHC, 4 vaves | Four stroke, single cylinder, SOHC, 4 valves | Four stroke, 54° V-Twin, SOHC, 4 valve per cylinder | Horizontal parallel twin, 2-stroke, piston reed valve | Four stroke, 54° V-Twin |
| Capacity: | 727 cc / 44.4 cu in | 653.7 cc / 39.91 cu in | 1462 cc / 89.2 cu. in | 247 cc / 15.1 cu in | 1786 cc / 108.8 cu. in |
| Bore x Stroke: | 9.5:1 | 102 x 80 mm | 96 x 101 mm | 54 x 54 mm | 112 X 90.5mm |
| Compression Ratio: | 105 x 84 mm | 11.8:1 | 9.5:1 | 6.7:1 | 10.5:1 |
| Starting: | Electric | Electric | Electric | Kick | Electric |
| Max Power: | 37 kW / 50 hp @ 6800 rpm (rear tyre: 34.1 kW / 45.7 hp/6500 rpm ) | 46 kW / 65 hp @ 7500 rpm | 66.6 hp / 49 kW @ 4800 rpm | 22.4 kW / 30 hp @ 8.000 rpm | 92 kW / 123 hp @ 6200 rpm |
| Max Torque: | 55 Nm / 5.6 kgf-m / 40.6 lb-ft @ 5600 rpm | 65 Nm / 6.6 kgf-m / 47.9 ft-lb @ 6550 rpm | 115 Nm / 11.73 kg-m / 84.8 lb-ft @ 2800 rpm | 28.4 Nm / 2.9 kgf-m / 21 lb-ft @ 7000 rpm | 160 Nm / 16.3 kgf-m / 118 lb.ft @ 3200 rpm |
| Transmission: | 5 Speed | 6 Speed | 5 Speed | 6 Speed, constant mesh | 5 Speed |
| Final Drive: | Chain, DAIDO DID520VL2, 116 links | Chain X-Ring 5/8 x 5/16" | Shaft | Chain | Shaft |
| Front Suspension: | 38mm Telescopic, coil spring, air damped | WP Upside-down forks, 4860 ROMA | Inverted telescopic forks, oil damped | Telescopic fork | Telescopic, coil spring, oil damped |
| Rear Suspension: | Full floater rising-rate monoshock with adjustable preload. | WP monoshock, 4618 with Pro-lever deflector | Link type, coil spring, oil damped adjustable spring preload | Dual shocks, coil springs | Link type, coil spring, oil damped, adjustable spring preload |
| Front Brakes: | Single 280 mm disc, 2 piston caliper | Single 320 mm floating disc, radially screwed four-piston brake caliper | 2 x 290 mm Discs, 3 piston calipers | Single disc | 2 x 310 mm discs, 2 piston calipers |
| Rear Brakes: | 160 mm Drum | Single 240 mm floating disc, single piston caliper | Single 274 mm disc 2 piston caliper | Drum | Single 274mm disc, 2 piston caliper |
| Front Tyre: | 90/90-21 54S | 120/70 - R17 | 120/70ZR18M/C (59W), tubeless | 3.00-18 | 150/80R16 |
| Rear Tyre: | 130/80-17 65S | 160/60 - R17 | 200/50ZR17M/C (75W), tubeless | 3.25-18 | 240/55R16 |
| Fuel Capacity: | 29 Litres / 7.7 US gal / 6.4 Imp gal | 13.5 Litres / 3.6 US gal / 3.0 Imp gal | 18 Litres / 4.8 US gal / 4.0 Imp gal | 15 L / 4.0 US gal / 3.3 Imp gal | 19 L / 5.0 US gal |