KTM 250 EXC-E (2011) vs Sunbeam B1 (1957-64)
Comparison technical specifications
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| Make: | KTM | Sunbeam |
| Model: | 250 EXC-E | B1 |
| Years: | 2011 | 1957-64 |
| Engine: | Two stroke, single cylinder | Parallel twin cylinder, 4 stroke |
| Capacity: | 249 cc / 15.2 cu in | 250 cc / 15.3 cu in |
| Bore x Stroke: | 66.4 x 72.0 mm | 56 x 50.6 mm |
| Compression Ratio: | 12.8:1 | 6.5:1 |
| Cooling System: | Liquid cooled | Forced air cooled |
| Starting: | Kick and electric | Electric |
| Transmission: | 6 Speed | Four speed |
| Final Drive: | Chain, 5/8 x 1/4 in | Enclosed chain in oil bath |
| Frame: | Central chrome-moly-steel frame | Tubular frame |
| Front Brakes: | Single 260 mm disc, floating caliper | Drum, 127 mm diameter |
| Rear Brakes: | Single 220 mm disc, floating caliper | Drum, 127 mm diameter |
| Ground Clearance: | 380 mm / 15.1 in | 127 mm / 5.0" |