BMW R 18 Classic (2021) vs Aprilia SXV 550 (2008-09) vs Honda C 72 Dream (1960-62) vs BMW F 850GS (2020) vs Harley-Davidson Harley Davidson XL 883N Iron (2011-12)
Comparison technical specifications
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| Make: | BMW | Aprilia | Honda | BMW | Harley-Davidson |
| Model: | R 18 Classic | SXV 550 | C 72 Dream | F 850GS | Harley Davidson XL 883N Iron |
| Years: | 2021 | 2008-09 | 1960-62 | 2020 | 2011-12 |
| Engine: | Four stroke, two cylinder horizontally opposed Boxer, Pushrod-actuated OHV with two camshafts, 4 valves per cylinder | Four stroke, 77° V-twin, SOHC | Air cooled, four stroke, twin cylinder SOHC | Four stroke, parallel twin cylinder, DOHC, 4 valves per cylinder | Four stroke, 45° V-Twin, OHV, 2 valves per cylinder. |
| Capacity: | 1802 cc / 110 cu-in | 549 cc / 33.5 cu in | 247.3 | 853 cc / 52 ci-in | 883 cc / 50.8cu in/ |
| Bore x Stroke: | 107.1 X 100 mm | 80 x 55mm | 54 x 54 mm | 84 x 77mm | 76.2 x 96.8 mm |
| Compression Ratio: | 9.6:1 | 12.0:1 | 8.3:1 | 12.7:1 | 8.8:1 |
| Clutch: | Hydraulically activated single-disc dry clutch | Cable operated multi-plate wet clutch. | Wet multi-plates | Multiplate wet clutch (anti-hopping), mechanically controlled | Multi-plate clutch with diaphragm spring in oil bath |
| Front Suspension: | 49 mm Telescopic fork, Non-adjustable | Ø48 mm Upside down fork, double adjustment. | Hydra lick forks | 43 mm USD forks | ∅39mm Fork |
| Rear Suspension: | Steel swinging fork with central shock strut | Box section aluminium swingarm with cast body, hydraulic monoshock with compression and rebound adjustment | Dual chocks | Aluminum double-sided swing arm, directly mounted, preload and rebound damping adjustable (Dynamic ESA) | Coil-over, dual-adjustable preload |
| Front Brakes: | 2x 300mm discs, 4-piston fixed caliper | Single Ø320mm disc, 4 piston caliper | Drum | 2 x 305 mm discs, 2 piston calipers, ABS | Single ∅300mm disc, 2 x ∅38mm piston calipers |
| Rear Brakes: | Single 300mm disc, 4-piston fixed caliper | Single Ø240mm disc, 2 piston caliper | Drum | Single 265mm disc,1 piston caliper, ABS | Single ∅260mm disc, 2 x ∅38mm piston calipers |
| Front Tyre: | 130/90 B16 | 120/70 -17 | 2.75-16 | 90/90-21 | 100/90B19 57H |
| Rear Tyre: | 180/65 B16 | 180/55 -17 | 3.00-16 | 150/70-17 | 130/90-16 |
| Fuel Capacity: | 16 Litres / 4.2 US gal | 7.8 Litres / 2.1 US gal | 11.8 Litres | 15 Litres / 4.0 US gal | 12.5 Litres / 3.3 US gal |