Yamaha XT660R (2010) vs Gilera RC 600R (1992-) vs Gilera 300 Extra (1964-69)
Comparison technical specifications
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| Make: | Yamaha | Gilera | Gilera |
| Model: | XT660R | RC 600R | 300 Extra |
| Years: | 2010 | 1992- | 1964-69 |
| Engine: | Four stroke, single cylinder, SOHC, 4 valve | Four stroke, single cylinder, DOHC, 4 valves | Four stroke, single cylinder, 2 valves |
| Capacity: | 659 cc/ 40.2 cu-in | 558 cc / 34.0 cu-in | 300 cc / 18.3 cu-in |
| Bore x Stroke: | 100 x 84 mm | 98 x 74 mm | 60 x 54 mm |
| Compression Ratio: | 10.0: 1 | 10.5:1 | 7.8:1 |
| Cooling System: | Liquid cooled | Liquid cooled | Air Cooled |
| Induction: | Fuel injection, 44 mm throttle body | 2x 30mm carburetor | Carburetor |
| Ignition: | TCI | Electronic | 6 Volt |
| Starting: | Electric | Electric | Kick |
| Max Power: | 33.8 kW / 48 hp @ 6000 rpm | 53 hp / 39.5 kW @ 7800 rpm | 10.9 kW / 15 hp @ 8000 rpm |
| Final Drive: | Chain | Chain | Chain |
| Front Suspension: | 43 mm Telescopic forks, | 41mm Morzocchi forks | Hydraulic telescopic forks |
| Rear Suspension: | Oscillating arm standard Monocross. 200mm wheel travel | Boge shocks variable preload | Dual chocks |
| Front Brakes: | Single 298mm disc 2 piston caliper | Single 260mm disc | Drum |
| Rear Brakes: | Single 245mm disc 1 piston caliper | Single 220mm disc | Drum |
| Front Tyre: | 90/90- 21 | 90/90 -21 | 3.00 -17 |
| Rear Tyre: | 130/80–17 | 130/80 -17 | 3.25 -17 |
| Fuel Capacity: | 15 Litres / 3.3 US gal | 12 Litres / 3.17 US gal | 19 Litres / 4.2 US gal |