KTM 600 LC4 Incas (1989) vs BMW R 69 (1955-56) vs Norton Mercury 650 (1968-70)
Comparison technical specifications
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| Make: | KTM | BMW | Norton |
| Model: | 600 LC4 Incas | R 69 | Mercury 650 |
| Years: | 1989 | 1955-56 | 1968-70 |
| Engine: | Single cylinder, 4-stroke, OHC, 4-valves | Four stroke, two cylinder horizontally opposed Boxer, pushrod operated 2 valves per cylinder. | Four stroke, parallel twin |
| Bore x Stroke: | 95 x 78 mm | 72 x 73 mm | 68 x 89 mm |
| Cooling System: | Liquid cooled | Air cooled | Air cooled |
| Starting: | Kick | Electric | Kick |
| Max Power: | 35.8 kW / 48 hp @ 7000 rpm | 26.1 kW / 35 hp @ 6800 rpm | 35 kW / 47 hp |
| Transmission: | 5-Speed | 4 Speed | 4-Speed |
| Final Drive: | Chain, X-ring JT 520-114 | Shaft | Chain |
| Frame: | Double cradle, tubular steel | Double loop steel tubular frame | Single downtube, cradle |
| Front Suspension: | Telescopic fork | Telescopic front fork with hydraulic damping | Telescopic fork |
| Rear Suspension: | Mono shock, aluminium swingarm | Swingarm, plunger type shock absorbers | Swingarm, plungers |
| Front Brakes: | Single disc | ∅200mm Drum | Drum, twin leading shoe |
| Rear Brakes: | Single disc | ∅200mm Drum | Drum |