Triumph America (2009-10) vs Yamaha XJ 750E (1981-82) vs KTM 125 EXC Enduro (1997-98) vs Norton Atlas Ranger (2019) vs Jawa 420 Prototype (1982)
Comparison technical specifications
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| Make: | Triumph | Yamaha | KTM | Norton | Jawa |
| Model: | America | XJ 750E | 125 EXC Enduro | Atlas Ranger | 420 Prototype |
| Years: | 2009-10 | 1981-82 | 1997-98 | 2019 | 1982 |
| Engine: | Four stroke, parallel twin cylinder, DOHC, 4 valves per cylinder | Four stroke, transverse four cylinder, DOHC, 2 valves per cylinder. | Two stroke, single cylinder | Four stroke, parallel twin. 270 degree firing order. Chain driven DOHC, with idler gear. | Four stroke, single cylinder, SOHC, 4 valves per cylinder. |
| Capacity: | 865 mm / 52.8 cu in | 749 cc / 45.6 cu-in | 124.8 cc / 7.6 cu in | 650 cc / 39.6 cu-in | 420 cc / 25.6 cu in |
| Bore x Stroke: | 90 x 68 mm | 65 х 56.4 mm | 54 x 54.5 mm | 82 x 61.5mm | 85 x 73 mm |
| Cooling System: | Air-cooled | Air cooled | Liquid cooled | Liquid cooled | Liquid cooled |
| Transmission: | 5 Speed | 5 Speed | 6 Speed | 5 Speed | |
| Final Drive: | Chain, X-ring | Chain | Chain | Chain | Chain |
| Front Suspension: | 41 mm Fork | 36mm Showa forks adjustable air pressure anti-dive resistance.150mm wheel travel. | 43 mm Marzocchi Magnum 45 upside down fork and shocks | 50mm diameter Roadholder USD forks. Preload, compression and rebound adjustable | Hydraulic telescopic forks |
| Rear Suspension: | Chrome spring twin shocks with adjustable preload | Dual dampers adjustable for spring preload rebound damping.97.5 wheel travel. | Fully adjustable Ohlins Type 3A mono shock | Roadholder monoshock with rising rate linkage and piggyback reservoir. Adjustable preload. | Single shock |
| Front Brakes: | Single 310mm disc, 2 piston caliper, Nissen | 2x 300mm disc 2 piston calipers | Single 260 mm disc,2 piston caliper | 2 x 320mm full floating Brembo discs. Radially mounted twin Brembo monoblock callipers with ABS. Brembo master cylinder. | Single disc |
| Rear Brakes: | Single 255mm disc, 2 piston caliper, Nissen | Drum | Single 220 mm disc,1 piston caliper | Single 245mm Brembo disc. Brembo twin piston rear calliper with ABS. Brembo master cylinder. | Expanding drum |
| Dry Weight: | 225 kg / 496 lbs | 214 kg /471.4 lbs | 94.5 kg / 208 lbs | 178 kg / 392.4 lbs | 155 kg / 342 bls |
| Fuel Capacity: | 19.3 Litres / 5.1 US gal / 4.2 Imp gal | 19 Litres / 5.0 US gal | 9 L / 2.4 US gal / 2.0 Imp gal | 15 Litres / 3.9 US gal | 20 L / 5.2 US gal |