KTM 640 Duke II (2003-04) vs Suzuki Boulevard S40 (2013-14) vs BMW K 1300 R Dynamic Special Edition (2011)
Comparison technical specifications
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| Make: | KTM | Suzuki | BMW |
| Model: | 640 Duke II | Boulevard S40 | K 1300 R Dynamic Special Edition |
| Years: | 2003-04 | 2013-14 | 2011 |
| Engine: | Four stroke, single Cylinder. SOHC, 4 valves, engine balancer | Four stroke, single cylinder, SOHC | Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder |
| Capacity: | 624.6 cc / 38.1 cu in | 652 cc / 39.8 cu-in | 1298 cc / 79.2 cu in. |
| Bore x Stroke: | 101 x 78 mm | 94 x 94.0 mm | 80 x 64.3 mm / 3.15 x 2.53" |
| Compression Ratio: | 11.5:1 | 8.5:1 | 13.0:1 |
| Cooling System: | Liquid cooled | Air cooled | Liquid cooled |
| Lubrication: | 2 x Eaten oil pumps | Wet sump | Wet sump |
| Induction: | Mikuni BST 40 carburetor | Mikuni BS40 | Electronic fuel injection, Digital Motor Electronics with integrated knock control (BMS-K) |
| Starting: | Electric & kick | Electric | Electric |
| Max Power: | 40.1 kW / 55 hp @ 7000 rpm | 23 kW / 31 hp @5400 rpm | 127 kW / 173 hp @ 9250 rpm |
| Max Torque: | 60 Nm / 6.1 kgf-m / 44.3 lb-ft @ 5500 rpm | 50 Nm / 5.1 kgf-m / 37 lb-ft @3400 rpm | 140 Nm / 14.3 kgf-m / 103 lb-ft @ 8250 rpm |
| Clutch: | Multi-disc in oil bath | Wet, multiple discs, cable operated | Multiple-plate clutch in oil bath, hydraulically operated |
| Transmission: | 5 Speed | 5 Speed | 6 Speed |
| Final Drive: | Chain, O-ring 5/8 x 1/4" | Belt | Shaft |
| Front Suspension: | WP - 4054 Roma Top adjuster, preload, compression and rebound adjustable | Telescopic 38 mm stanchions, coil spring, oil damped | BMW Motorrad Duolever; central spring strut, Paralever; central spring strut with lever system |
| Front Wheel Travel: | 140 mm / 5.5 in | 140 mm / 5.5 in | 115 mm / 4.5 in. |
| Rear Suspension: | Central shock absorber WP IBS with PRO-LEVER linkage to rear- swing-arm with needle bearing | Twin shock, 5-way adjustable spring preload | Cast aluminium single swing arm with BMW Motorrad, spring pre-tension with infinite hydraulic adjustment |
| Rear Wheel Travel: | 170 mm / 6.7 in | 80 mm / 3.1 in | 135 mm / 5.3" |
| Front Brakes: | Single 320 mm disc, 4 piston caliper | 265 mm Single disc | 2 x ∅320mm discs, 4 piston calipers |
| Rear Brakes: | Single 220 mm disc, 1 piston caliper | Drum, rod operated | Single ∅265mm disc, 2 piston caliper |
| Front Tyre: | 120/70 - ZR17 58H | 100/90-19 57H, tube type | 120/70 ZR17 |
| Rear Tyre: | 160/60 - ZR17 69H | 140/80-15 67H, tube type | 180/55 ZR17 |
| Wheelbase: | 1460 mm / 57.5 in | 1480 mm / 58.3 in | 1585 mm / 62.4" |
| Seat Height: | 860 mm / 33.9 in | 700 mm / 27.6 in | 820 mm/ 32.3 in. (low seat 790 mm / 31.1 in) |
| Dry Weight: | 145 kg / 320lbs | 160 kg / 352 lbs | 217 kg / 478 lbs |
| Fuel Capacity: | 11.3 Litres / 3.0 US gal / 2.4 Imp gal | 10.5 Litres / 2.6 US gal | 19 L / 5.0 US gal |