Triumph Speedmaster Roadster (2013-14) vs KTM 640 LC4 Enduro (1999-00) vs Triumph Street Twin (2016-17)
Comparison technical specifications
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| Make: | Triumph | KTM | Triumph |
| Model: | Speedmaster Roadster | 640 LC4 Enduro | Street Twin |
| Years: | 2013-14 | 1999-00 | 2016-17 |
| Engine: | Four stroke, parallel twin, DOHC, 4 valves per cylinder | Four stroke, single Cylinder. SOHC, 4 valves, engine balancer | Four stroke, 270° Crank angle parallel twin, SOHC, 8 valves |
| Capacity: | 865 cc / 52.8 cu in | 624.6 cc / 38.1 cu in | 900 cc / 54.9 cu in |
| Bore x Stroke: | 90 x 68 mm | 101 x 78 mm | 84.6 x 80 mm |
| Compression Ratio: | 9.2:1 | 11.5:1 | 10.55:1 |
| Cooling System: | Air cooled | Liquid cooled | Liquid cooled |
| Induction: | Multipoint sequential electronic fuel injection with SAI | Mikuni BST 40 carburetor | Multipoint sequential electronic fuel injection |
| Ignition: | Digital inductive type | Kokusan contactless DC-CDI ignition with advanced system | Digital |
| Starting: | Electric | Electric & kick | Electric |
| Max Power: | 45.5 kW / 61 hp @ 6800 rpm | 40.1 kW / 55 hp @ 7000 rpm | 40.5 kW / 55 hp @ 5900 rpm |
| Max Torque: | 74.5 Nm / 7.6 kgf-m / 55 ft.-lb @ 3300 rpm | 55 Nm / 5.6 kgf-m / 40.6 lb-ft @ 5500 rpm | 80 Nm / 8.16 kgf-m / 59 ft-lb @ 3230 rpm |
| Transmission: | 5 Speed | 5 Speed | 5-Speed |
| Final Drive: | Chain, X-ring | Chain, O-ring 5/8 x 1/4" | Chain, X-ring |
| Clutch: | Wet, multi-plate | Multi-disc in oil bath | Wet, multi-plate, slip-assist |
| Frame: | Tubular steel cradle. Swingarm: twin-sided, tubular steel | Central chrome-moly steel frame | Tubular steel cradle, twin-sided tubular steel swing-arm |
| Front Suspension: | Kayaba 41mm telescopic forks with polished lowers | White Power – Up Side Down 4357 MXMA fork | Kayaba 41 mm fork |
| Front Wheel Travel: | 120 mm / 4.7 in | 280 mm / 11.0 in | 120 mm / 4.7 in |
| Rear Suspension: | Kayaba chromed spring twin shocks with adjustable preload | Central shock absorber (WP BAVP3612) with PRO-LEVER linkage to rear- swing-arm with needle bearing | Kayaba twin shocks with adjustable preload |
| Rear Wheel Travel: | 96 mm / 3.8 in | 320 mm / 12.6 in | 120 mm / 4.7 in |
| Front Brakes: | Single 310 mm disc, 2 piston Nissen floating calipers | Single 300 mm disc, 4 piston caliper | Single 310mm disc, Nissin 2 piston floating caliper, ABS |
| Rear Brakes: | Single 285 mm disc, 2 piston Nissen floating caliper | Single 220 mm disc, 1 piston caliper | Single 255mm disc, Nissin 2 piston floating caliper, ABS |
| Front Tyre: | 100/90-R19 | 90/90 - 21 | 100/90-R18 |
| Rear Tyre: | 170/80-B15 | 140/80 - 18 | 150/70-R17 |
| Wheelbase: | 1598 mm / 62.9 in | 1510 mm / 59.4 in | 1415 mm / 55.7 in |
| Seat Height: | 690 mm / 27.1 in | 930 mm / 36.6 in | 750 mm / 29.5 in |
| Fuel Capacity: | 19.3 Litres / 5.1 US gal / 4.25 Imp gal | 12 L / 3.2 US gal / 2.6 Imp gal | 12 L / 3.2 US gal / 2.7 Imp gal |