Yamaha XSR 125 (2021) vs Yamaha YZF-R 3 Monster Moto GP Replica (2021) vs Yamaha TDR 125 (1989-92)
Comparison technical specifications
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| Make: | Yamaha | Yamaha | Yamaha |
| Model: | XSR 125 | YZF-R 3 Monster Moto GP Replica | TDR 125 |
| Years: | 2021 | 2021 | 1989-92 |
| Engine: | Four stroke, single cylinder, SOHC, 4 valve with variable valve actuation | Four stroke, parallel twin cylinder, DUHC, 4 valve per cylinder | Two stroke, single cylinder |
| Capacity: | 124 cc / 7.6 cu-in | 321 cc / 19.5 cu-in | 124 cc / 7.6 cu-in |
| Bore x Stroke: | 52 x 58.6 mm | 68.0 x 44.1mm | 56 x 50.7 mm |
| Cooling System: | Liquid cooled | Liquid cooled | Liquid cooled |
| Compression Ratio: | 11.2:1 | 11.2:1 | 6.6:1 |
| Induction: | Electronic fuel injection | Electronic Fuel Injection, 32 mm throttle body | 28mm Mikuni TM carburetor |
| Ignition: | TCI | TCI: Transistor Controlled Ignition | Electronic |
| Starting: | Electric | Electric | Electric |
| Max Power: | 11 kW / 14.7 hp @ 10000 rpm | 30.9 kW 41.4 hp @ 10750 rpm | 25 hp / 18.6 kW @ 9500 rpm |
| Max Torque: | 11.5 Nm / 8.5 lb-ft @ 8000 rpm | 29.6 Nm / 3.0 kg-m @ 9000 rpm | 2.1 kgf-m / 15.1 lb-ft @ 9500 rpm |
| Transmission: | 6 Speed slip-and-assist clutch | Constant Mesh, 6-speed | 6 Speed |
| Final Drive: | Chain | “O” ring chain | Chain |
| Front Suspension: | 37mm USD fork | 37 mm USD Inverted telescopic fork | 38mm Telescopic forks |
| Rear Suspension: | Monoshock operating on a die-cast aluminium swingarm | Monocross single Kayaba shock, adjustable preload | Monoshock with 5-way adjustable preload |
| Front Brakes: | Single 267mm disc 2 piston caliper | Single 298mm disc 2 piston caliper | Single 282mm disc 2 piston caliper, |
| Rear Brakes: | Single 220mm disc 1 piston caliper | Single 220mm disc 1 piston caliper | Single 220mm disc 1 piston caliper. |
| Front Tyre: | 110/70 -17 | 110/70-17M/C 54H | 100/90-18 |
| Rear Tyre: | 140/70 -17 | 140/70-17M/C 66H | 130/80-17 |
| Wheelbase: | 1330 mm / 52.3 in | 1379.2 mm / 54.3 in | 1405 mm / 55.3 in |
| Seat Height: | 815 mm / 32 in | 780 mm / 30.7 in | 850 mm / 33.4 in |
| Ground Clearance: | 160 mm / 6.2 in | 160 mm / 6.2 in | 270 mm / 10.6 in |
| Fuel Capacity: | 11 Litres / 2.9 US gal | 14 Litres / 3.7 US gal | 11 Litres / 2.9 US gal |