Yamaha SR 400 (1998-03) vs BMW R 1200RT (2006)
Comparison technical specifications
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| Make: | Yamaha | BMW |
| Model: | SR 400 | R 1200RT |
| Years: | 1998-03 | 2006 |
| Engine: | Four stroke, single cylinder, SOHC, 2 valves per cylinder. | Four stroke, two cylinder horizontally opposed Boxer, 4 valves per cylinder |
| Capacity: | 399 cc / 24.3 cu-in | 1170 cc / 71.4 cu in |
| Bore x Stroke: | 87 х 67.2 mm | 101 x 73 mm |
| Compression Ratio: | 8.5:1 | 12.0:1 |
| Cooling System: | Air cooled | Air/Oil cooled |
| Induction: | BSR33 carburetor | BMW engine management, BMS-K |
| Ignition: | CDI | Digital engine management |
| Starting: | Kick | Electric |
| Max Power: | 27 hp / 17.1 KW @ 7000 rpm | 81kW / 110 hp @ 7500 rpm |
| Max Torque: | 27.4 Nm / 6.3 kgf-m @ 6500 rpm | 115 Nm / 11.7 kgf-m / 85 lb-ft @ 6000 rpm |
| Clutch: | Wet, Multiple Disc | Single dry plate clutch, hydraulically |
| Transmission: | 5 Speed | 6 Speed |
| Final Drive: | Chain | System Enclosed driveshaft with two universal joints |
| Frame: | Steel Double Cradle | Three-section frame consisting of front and rear section, load bearing engine-gearbox unit |
| Front Suspension: | Telescopic fork | BMW Motorrad Telelever, stanchion diameter 35mm, central spring strut, rebound damping electronically adjustable with standard ESA |
| Front Wheel Travel: | 111 mm / 4.3 in | 120 mm / 4.7 in |
| Rear Suspension: | Dual shocks | Die-cast aluminium single-sided swinging arm with BMW Motorrad EVO-Paralever, spring preload hydraulically adjustable to continuously variable levels by means of electronically adjustable ESA, rebound damping with standard ESA |
| Front Brakes: | Single disc | 2 x 320mm Discs, 4 piston callipers |
| Rear Brakes: | Drum | Single 265mm disc, 2 piston caliper |
| Front Tyre: | 3.50-19 | 120/70 ZR17 |
| Rear Tyre: | 4.00-16 | 180/60 ZR17 |
| Wheelbase: | 1410 mm / 55.5 IN | 1485 mm / 58.4 in |
| Seat Height: | 790 mm / 30.9 in | 820 mm - 840 mm / 32.2 in - 33.0 in 780 mm - 800 mm / 30.7 - 31.4 in (special equipment low seat bench) |
| Ground Clearance: | 130 mm / 5.1 in | 155 mm / 6.1 in |
| Wet Weight: | 174 kg / 384 lbs | 259 kg / 570.9 lbs |
| Fuel Capacity: | 12 Litres / 3.2 gal | 27 Liters / 7.1 US gal |