Yamaha YZF 1000R Thunder ace (2003) vs Yamaha DT 125RE Everts Replica (2003-04) vs Yamaha RD 125 (1977)
Comparison technical specifications
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| Make: | Yamaha | Yamaha | Yamaha |
| Model: | YZF 1000R Thunder ace | DT 125RE Everts Replica | RD 125 |
| Years: | 2003 | 2003-04 | 1977 |
| Engine: | Four stroke, transverse four cylinder, DOHC, 5 valves per cylinder | Two stroke, single cylinder, reed-valve | Two stroke, parallel twin |
| Capacity: | 1002 cc / 61.1 cu-in | 123 cc / 7.5 cu-in | 124 cc / 7.6 cu-in |
| Bore x Stroke: | 75.5 x 56 mm | 56 X 50 mm | 43 х 43 mm |
| Compression Ratio: | 11.5:1 | 6.8:1 | 6.8:1 |
| Induction: | 4x 38mm Mikuni BDSR38 with TPS carbs | Mikuni 28 SS | 2x 18mm Teikei carburetors |
| Ignition: | Digital TCI | CDI | Battery coil |
| Starting: | Electric | Kick | Kick |
| Max Power: | 145 hp / 106.7kW @ 10000 rpm | 14.7 hp / 10.8 kW @ 7000 rpm | 17 hp / 12.4 kW @ 8500 rpm |
| Max Torque: | 108.3Nm / 11kgf-m @ 8500 rpm | 1.7 kgf-m / 16.3 Nm @ 7000 rpm | 1.3 kgf-m @ 8000 rpm |
| Transmission: | 5 speed | 6 speed | 5 Speed |
| Final Drive: | Chain | Chain | Chain |
| Front Suspension: | 45mm forks, adjustable preload, bump and rebound. | 41mm Telescopic forks | 28 mm telescopic forks |
| Rear Suspension: | Mono shock adjustable preload, bump and rebound. | Monocross linkage | Dual rear shock pre-load adjustable |
| Front Brakes: | 2x 298mm discs 4 piston calipers | Single 230mm disc | Single240mm disc |
| Rear Brakes: | Single 245mm disc 2 piston caliper | Single 220mm disc | 130 mm Drum |
| Front Tyre: | 120/70 ZR17 | 80/90 -21 | 2.75-18 |
| Rear Tyre: | 180/55 ZR17 | 110/80 -18 | 3.00-18 |
| Wheelbase: | 1433 mm / 56.4 in | 1415 mm / 55.7 in | 1245 mm / 49.0 in |
| Seat Height: | 795 mm / 31.3 in | 885 mm / 34.8 in | 749 mm / 29.5 in |
| Fuel Capacity: | 19 Litres / 5.0 gal | 10 Litres / 2.2 gal | 11.5 Litres / 3.04 US gal |