| MODEL | YAMAHA YZF-R125 2023 |
| Year | 2023 |
| 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 |
| Max Torque | 11.5 Nm / 8.48 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, 110 mm / 4.3 in travel |
| Front Brakes | Single 292 mm disc |
| Rear Brakes | Single 220 mm disc |
| DIMENSION SPECS | |
| Overall Length | 1990 mm / 78.3 in |
| Overall Width | 715 mm / 28.1 in |
| Overall Height | 1145 mm / 45.0 in |
| Seat Height | 820 mm / 32.2 in |
| Wheelbase | 1325 mm / 52.1 in |
| Ground Clearance | 160 mm / 6.3 in |
| Dry Weight | — |
| Wet Weight | 144 kg / 317.4 lb |
| WHEEL SPECS | |
| Front Tyre | 100/80-17 M/C |
| Rear Tyre | 140/70-17 M/C |
| FUEL SYSTEM | |
| Fuel Capacity | 11 Litres / 2.9 US gal |
| Fuel Consumption | — |
| Top Speed | — |
The fourth-generation R125 has new R7-inspired bodywork with a bi-functional LED headlight, a 5-inch TFT dash with street and track themes, lap timer and Bluetooth smartphone connection through the MyRide app. It adds switchable traction control, is pre-wired for a quickshifter, and rolls on Michelin Pilot Street tyres with a cast aluminium swingarm and radial front caliper.
