Sunbeam B1 (1957-64) vs KTM 300 EXC Enduro (2003-04)
Comparison technical specifications
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| Make: | Sunbeam | KTM |
| Model: | B1 | 300 EXC Enduro |
| Years: | 1957-64 | 2003-04 |
| Engine: | Parallel twin cylinder, 4 stroke | Two stroke, single cylinder |
| Capacity: | 250 cc / 15.3 cu in | 293 cc / 17.9 cu in |
| Bore x Stroke: | 56 x 50.6 mm | 71.1 x 71.1 mm |
| Cooling System: | Forced air cooled | Liquid cooled |
| Compression Ratio: | 6.5:1 | 11.0:1 |
| Starting: | Electric | Kick |
| Transmission: | Four speed | 5 Speed |
| Final Drive: | Enclosed chain in oil bath | Chain, Regina O-ring |
| Frame: | Tubular frame | Central double cradle, CrMo4 |
| Ground Clearance: | 127 mm / 5.0" | 386 mm / 15.2 in |
| Front Brakes: | Drum, 127 mm diameter | Single260 mm disc, 2 piston caliper |
| Rear Brakes: | Drum, 127 mm diameter | Single 220 mm disc, 1 piston caliper |