Norton Commando 850 (1973) vs KTM 125 EXC Enduro (1997-98) vs KYMCO Kymco Sento 50 (2014) vs KTM 250 EXC-E (2008-10) vs Triumph TR6 Trophy (1956-60) vs BMW R 1250GS 40 Years Edition (2021)
Comparison technical specifications
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| Make: | Norton | KTM | KYMCO | KTM | Triumph | BMW |
| Model: | Commando 850 | 125 EXC Enduro | Kymco Sento 50 | 250 EXC-E | TR6 Trophy | R 1250GS 40 Years Edition |
| Years: | 1973 | 1997-98 | 2014 | 2008-10 | 1956-60 | 2021 |
| Engine: | Four stroke, parallel twin cylinder, push rod 2 valves per cylinder. | Two stroke, single cylinder | Four stroke, s, ingle cylinder | Two stroke, single cylinder | Four stroke, parallel twin | Four stroke, two cylinder horizontally opposed Boxer, with two overhead spur gear driven camshafts, a counterbalance shaft and variable intake camshaft control system BMW ShiftCam, 4 valves per cylinder, intake 40mm, outlet 34 mm |
| Capacity: | 829 cc / 50.6 cu in | 124.8 cc / 7.6 cu in | 49 cc / 3.0 cub in | 249 cc / 15.2 cu in | 649 cc / 39.6 cu in | 1254 cc / 76.5 cu-in |
| Compression Ratio: | 8.5:1 | 12.5:1 | 11:1 | 11.0:1 | 8.5:1 (US and export) / 7.0:1 (UK) | 12.5:1 |
| Cooling System: | Air cooled | Liquid cooled | Air cooled | Liquid cooled | Air cooled | Liquid / Air cooled |
| Induction: | 2 x Amal carburetors | Dell-Orto 37 mm flat slide carburetor | Fuel injection | Keihin MX FCR 39 carburetor | Single Amal Monobloc carburetor | Electronic intake pipe injection, 52mm Ø throttle valve |
| Starting: | Kick | Kick | Electric & Kick | Kick and electric | Kick | Electric |
| Transmission: | 4 Speed | 6 Speed | CVT | 5 Speed | 4-Speed | Constant mesh 6-speed gearbox with helical gearing system |
| Final Drive: | Chain | Chain | Belt | Chain, 5/8 x 1/4 in | Chain, 101 links | Shaft |
| Front Suspension: | Telescopic fork | 43 mm Marzocchi Magnum 45 upside down fork and shocks | Hydraulic fork | WP Suspension – 4860 MXMA / MXMA + PA | Telescopic fork, hydraulic damping | BMW Motorrad 37mm Telelever, central spring strut |
| Rear Suspension: | Dual shocks | Fully adjustable Ohlins Type 3A mono shock | Double swingarm, dual shocks | WP Suspension – 5018 PDS MCC / DCC, aluminium swing arm | Swing arm, 2 x Girling dampers | Cast aluminium single-sided swing arm with BMW Motorrad Paralever; WAD strut (travel-related damping), spring pre-load hydraulically adjustable (continuously variable) at handwheel, rebound damping adjustable at handwheel |
| Front Brakes: | Single disc | Single 260 mm disc,2 piston caliper | Single disc, 2 piston caliper | Single 260 mm disc, floating caliper | 178 mm / 7" SLS drum | 2x 305mm floating discs, 4-piston radial brake calipers |
| Rear Brakes: | Drum | Single 220 mm disc,1 piston caliper | Drum | Single 220 mm disc, floating caliper | 178 mm / 7" SLS drum | Single 276mm disc, 2-piston floating caliper |
| Front Tyre: | 4.10-19 | 90/90 - 21 | 90/90-10 | 90/90 - 21 | 3.25 x 19 Dunlop | 120/70 R19 |
| Rear Tyre: | 4.10-19 | 120/90 - 18 | 90/90-10 | 120/80 - 18 | 4.00 x 18 Dunlop | 170/60 R17 |
| Fuel Capacity: | 19 Litres / 5.0 US gal | 9 L / 2.4 US gal / 2.0 Imp gal | 5 L / 1.3 US gal | 9.5 Litres / 2.5 US gal | US: 13.6 L / 3.6 US gal / 3 Imp gal / UK and export: 18 L / 4.8 US gal / 4 Imp gal | 20 Litres / 5.3 US gal |