Sunbeam Model 90 (1928-33) vs LIFAN Lifan LF 200GY-6 (2008) vs BMW S 1000RR (2025)
Comparison technical specifications
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| Make: | Sunbeam | LIFAN | BMW |
| Model: | Model 90 | Lifan LF 200GY-6 | S 1000RR |
| Years: | 1928-33 | 2008 | 2025 |
| Engine: | Single cylinder, four stroke, SOHV | Four stroke, single cylinder, | Four stroke, transverse four cylinder, DOHC, valve actuation via single cam followers, BMW ShiftCam variable intake cam control |
| Capacity: | 493 cc / 30.1 cu in | 196.9 cc | 999 cc / 60.9 cu-in |
| Bore x Stroke: | 80 x 98 mm | 63.5 x 62.2 mm | 80 x 49.7 mm |
| Compression Ratio: | 7.0:1 (Optional 7.5 or 9.0:1) | 13.3:1 | |
| Cooling System: | Air cooled | Air cooled | Liquid/oil cooled |
| Starting: | Kick | Electric & KICK | Electric |
| Final Drive: | Chain | Chain | Chain 525 17/46 |
| Frame: | Single cradle, steel | Split cradle frame of round tubes in 7020 light alloy | Bridge-type aluminum laminate frame with load-bearing engine |
| Front Suspension: | Druid-pattern, girder forks | Telescopic fork | Upside-down telescopic fork, diameter 45 mm, spring preload, rebound and compression stages adjustable |
| Rear Suspension: | Rigid, spring loaded saddle | Swinging arm | Aluminium swing arm, full floater pro, compression and rebound damping adjustable, adjustable spring preload |
| Front Brakes: | Drum | Single disc | 2x 320mm floating disc, radial 4-piston fixed calipers |
| Rear Brakes: | Drum | Single disc | Single 220 mm disk, single-piston floating caliper |
| Dry Weight: | 143 kg / 315 lbs Racing: 141.5 / 312 lbd | 128 kg | 176 kg / 388 lbs |
| Fuel Capacity: | 11.4 L / 2.5 Imp gal / 3.0 US gal | 12 Litres | 16.5 Litres / 4.35 US gal |