| MODEL | YAMAHA YZF-R125 2020 |
| Year | 2020 |
| Engine Type | Four stroke, single cylinder, SOHC, 4 valve |
| Displacement / Capacity | 124.7 cc / 7.6 cu in |
| Bore X Stroke | 52 x 58.6 mm |
| Compression Ratio | 11.2:1 |
| Cooling System | Liquid cooled |
| Max Power | 11 kW / 14.7 hp @ 9000 rpm |
| Max Torque | 12.4 Nm / 9 lb-ft @ 8000 rpm |
| Ignition | TCI |
| Induction | Electronic fuel injection |
| Start System | Electric |
| TRANSMISSION SPECS | |
| Lubrication | Wet sump |
| Gear Box | 6 speed, constant mesh |
| Clutch | Wet, multiple-disc, coil spring |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | Steel Deltabox |
| Front Suspension | 41 mm upside-down telescopic fork, 130 mm / 5.1 in travel |
| Rear Suspension | Swingarm, link type suspension, 114 mm / 4.5 in travel |
| Front Brakes | Single 292 mm disc |
| Rear Brakes | Single 230 mm disc |
| DIMENSION SPECS | |
| Overall Length | 1955 mm / 76.9 in |
| Overall Width | 680 mm / 26.7 in |
| Overall Height | 825 mm / 32.4 in |
| Seat Height | 825 mm / 32.4 in |
| Wheelbase | 1355 mm / 53.3 in |
| Ground Clearance | 155 mm / 6.1 in |
| Dry Weight | — |
| Wet Weight | 142 kg / 313 lb |
| WHEEL SPECS | |
| Front Tyre | 100/80-17 M/C |
| Rear Tyre | 130/70-17 M/C |
| FUEL SYSTEM | |
| Fuel Capacity | 11.5 Litres / 3.0 US gal |
| Fuel Consumption | — |
| Top Speed | — |
The 2020 R125 carried over the third-generation design introduced in 2019: a liquid-cooled four-valve single with variable valve actuation, a steel Deltabox frame, upside-down fork and R-series styling. It is a learner-legal supersport aimed at the 125 cc class, with an LCD dash showing gear and VVA status and an assist-and-slipper clutch.
