BMW R 100RT (1984) vs KTM 1090 Adventure R (2017) vs Harley-Davidson Harley Davidson XL 1200N Nightster (2009-10) vs BMW R 80GS (1988)
Comparison technical specifications
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| Make: | BMW | KTM | Harley-Davidson | BMW |
| Model: | R 100RT | 1090 Adventure R | Harley Davidson XL 1200N Nightster | R 80GS |
| Years: | 1984 | 2017 | 2009-10 | 1988 |
| Engine: | Four stroke, two cylinder horizontally opposed Boxer, 2 valves per cylinder | Four stroke, 75°V-twin cylinder, DOHC, 4 valves per cylinder | Fur stroke, 45° V-Twin Evolution® Valve Train Pushrod-operated, OHV, 2 valves per cylinder | Four stroke, two cylinder horizontally opposed Boxer, pushrod operated 2 valves per cylinder |
| Capacity: | 980 cc 59.8 cu in | 1050 cc / 64.0 cu-in | 1199 cc / 73.2 cu-in | 797.5 cc / 48.7 cu in. |
| Bore x Stroke: | 94 x 70.6 mm | 103 x 63 mm | 88.8 x 96.8 mm | 84.8 x 70.6 mm |
| Cooling System: | Air cooled | Liquid cooling system, continuous circulation of cooling liquid with water pump | Air cooled | Air cooled |
| Compression Ratio: | 9.5:1 | - | 9.7:1 | 8.2:1 |
| Lubrication: | Wet sump | Forced oil lubrication with 3 rotor pumps | Dry-sump | Wet sump |
| Induction: | 2 x Constant depression carburettors, Bing 94/40/105 - 94/40/106 | EFI, ride by wire | Electronic Sequential Port Fuel Injection (ESPFI) | 2 x Bing constant depression carburetors |
| Ignition: | Battery ignition | Keihin EMS with RBW, twin ignition | Digital CDI | Battery ignition |
| Starting: | Electric | Electric | Electric | Electric |
| Max Torque: | 76 Nm / 7.7 kgf-m / 56 ft-lb @ 6000 rpm | 109 Nm / 80.4 lb.-ft. @ 6500 rpm | 107.3 Nm / 79 lb-ft @ 4000 rpm | 61 Nm / 6.2 kgf-m / 44 ft lb @ 5000 rpm |
| Clutch: | Dry single plate, with diaphragm spring | PASC (TM) slipper clutch, hydraulically actuated | Wet 9-plate | Dry single plate, with diaphragm spring |
| Transmission: | 5 Speed | 6 Speed | 5 Speed | 5 Speed |
| Final Drive: | Shaft | Chain X-Ring 5/8 x 5/16″ | Belt | Shaft |
| Frame: | Double sown tubs, dual cradle | Chromium-Molybdenum steel trellis frame, powder coated | Mild steel, tubular frame, circular sections, cast junctions Swingarm Mild steel rectangular tube sections, stamped junctions, MIG welded | Double loop tubular frame with bolt on rear section |
| Front Suspension: | Telescopic fork with hydraulic shock absorber. | 48mm WP Suspension Up Side Down | 39mm Forks | ∅40mm Marzocchi telescopic hydraulic forks. |
| Rear Suspension: | Long swinging arm with adjustable strut. | WP-PDS Monoshock | Coil-over, dual-adjustable preload | BMW Paralever swinging arm |
| Front Brakes: | 2 x ∅260mm discs, 2 piston calipers | 2x 320mm discs 4 piston calipers | Single 292mm disc 2 piston calipers | Single ∅285mm disc |
| Rear Brakes: | Simplex ∅200 mm drum | Single 267mm disc 2 piston caliper | Single 292mm disc 1 piston caliper | ∅200mm Drum |
| Front Tyre: | 3.25 H-19 | 90/90 R21 Continental TKC 80 Twinduro | 100/90B19 57H | 90/90 x 21S |
| Rear Tyre: | 4.00 H-18 | 150/70 R18 Continental TKC 80 Twinduro | 150/80B16 77H | 13/80 x 17S |
| Wheelbase: | 1465 mm / 57.67 in | 1580 mm / 62.2 in | 1519 mm / 59.8 in | 1514 mm / 59.6 in |
| Seat Height: | 820 mm / 32.3 in | 890 mm / 35.0 in | Laden 653 mm / 25.7 in Unladen 683 mm / 26.9 in | 850 mm / 33.5 in |
| Ground Clearance: | 165 mm / 6.49 in | 250 mm / 9.8 in | 100 mm / 4.7 in | 200 mm / 7.87 in |
| Fuel Capacity: | 24 Litres / 6.3 US gal | 23 Litres / 6.08 gal | 12.5 Litres / 3.3 US gal | 24 L / 6.3 US gal |