Yamaha DT 125RE (1998) vs Yamaha XJ 900R Seca (1983-84) vs Yamaha MT-01 (2007-08) vs Yamaha YZF1000 R1 (1999)
Comparison technical specifications
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| Make: | Yamaha | Yamaha | Yamaha | Yamaha |
| Model: | DT 125RE | XJ 900R Seca | MT-01 | YZF1000 R1 |
| Years: | 1998 | 1983-84 | 2007-08 | 1999 |
| Engine: | Two stroke, single cylinder, reed-valve | Four stroke, transverse four cylinder, DOHC, 2 valves per cylinder. | Four stroke, 48° V-Twin cylinder, SOHC, 4 valves per cylinder. | Four stroke, transverse four cylinder, DOHC, 5 valves per cylinder. |
| Capacity: | 123 cc / 7.5 cu-in | 853 cc / 52 cu-in | 1670 cc / 101.9 cu-in | 998 cc / 60.9 cu-in |
| Bore x Stroke: | 56 X 50 mm | 67 х 60.5 mm | 97 x 113 mm | 74 x 58 mm |
| Compression Ratio: | 6.8:1 | 9.2:1 | 8.36:1 | 11.8:1 |
| Induction: | Mikuni 28 SS | 4x 35mm Mikuni carburetor | Twin-bore fuel injection (FI) | 4 x 40mm Mikuni CV Downdraft carburetors |
| Ignition: | CDI | CDI | Digital TCI | Digital TCI |
| Starting: | Kick | Electric | Electric | Electric |
| Max Power: | 14.7 / 10.8 kW @ 7000 rpm | 97 hp / 70.8 Nm @ 9000 rpm | 66.3 kW / 90 hp @ 4750 rpm | 148.8 hp / 109.5 kW @ 10000 rpm |
| Max Torque: | 1.7 kgf-m / 16.3 Nm @ 7000 rpm | 80.2 Nm / 59.3 lb-ft @ 5000 rpm | 150.1Nm / 110.7lb-ft @ 3750rpm | 11.0 kgf-m / 108.3 Nm @ 8500 rpm |
| Clutch: | Wet multiplate | Wet, 5 springs | Wet, multiple-disc | Wet, multiple discs, cable operated |
| Transmission: | 6 speed | 5 Speed | 5 Speed | 6 Speed |
| Final Drive: | Chain | Shaft | Chain | Chain |
| Front Suspension: | 41mm Telescopic forks | Air assisted telescopic forks, | Inverted telescopic fork; | 41mm inverted telescopic forks |
| Rear Suspension: | Monocross linkage | Twin strut gas assisted, 5 spring preload and 12 damping adjustable, | Swingarm with fully adjustable single shock; | Truss-type Aluminium swinging arm Monocross system |
| Front Brakes: | Single 230mm disc | 2x 254mm discs | 2x 320 mm discs 4 piston calipers | 2 x 298mm discs 4 piston calipers |
| Rear Brakes: | Single 220mm disc | Single 254mm disc | Single 267 mm disc 1 piston caliper | Single 256mm disc 2 piston caliper |
| Front Tyre: | 80/90 -21 | 100/90-18 | 120/70 ZR18 | 120/70 ZR17 |
| Rear Tyre: | 110/80 -18 | 120/90-18 | 190/50 ZR17 | 190/50 ZR17 |
| Wheelbase: | 1415 mm / 55.7 in | 1480 mm / 58.2 in | 1525 mm / 60.0 in | 1395 mm / 54.9 in |
| Seat Height: | 885 mm / 34.8 in | 780mm / 30.7 in | 825 mm / 32.5 in | 813 mm / 32.3 in |
| Ground Clearance: | 270 mm / 10.6 in | 145mm / 5.7 in | 140 mm / 5.5 in | 140 mm / 5.5 in |
| Fuel Capacity: | 10 Litres / 2.2 gal | 22 Litres / 5.8 US gal | 15 Litres / 3.2 gal | 18 Litres / US 4.7 gal |