# Yamaha YZF-R125

The Yamaha YZF-R125 is a sport motorcycle designed by Yamaha and manufactured by MBK Industrie since 2008. In 2023 the model is in its fourth generation.

## First generation: (2008–2013)

In 2008, the bike initially came available as a four stroke replacement for the TZR125. Entering the thin market of small displacement 4-stroke sport bikes, it quickly gained traction and became a popular choice for young riders.

### Specifications

Specifications for EU version.
| Dimensions | Overall length | 2015 mm |
| Dimensions | Overall width | 660 mm |
| Dimensions | Overall height | 1065 mm |
| Dimensions | Seat height | 815 mm |
| Dimensions | Wheelbase | 1355 mm |
| Dimensions | Ground clearance | 155 mm |
| Dimensions | Turning radius | 3100 mm |
| Dimensions | Fork leg diameter | 33 mm |
| Front brake | Disc | Fixed, 292 mm |
| Front brake | Caliper | Floating, 2 piston, axial mount |
| Engine | Type | Liquid cooled, 4-stroke, SOHC |
| Engine | Displacement | 124.7 cc |
| Engine | Bore x Stroke | 52.0 x 58.6 mm |
| Engine | Compression ratio | 11.2 : 1 |
| Engine | Fuel consumption | (Approximately) 3.0 L / 100 km |
| Weight | Fuel capacity | 13.8 L |
| Weight | Oil capacity | 1.15 L (1.0 L after filter change) |
| Weight | Coolant capacity | 1.0 L (+0.25 L reservoir) |
| Weight | Curb weight | 136 kg |

## Second generation: (2014–2018)

In 2014, Yamaha gave a facelift to the model, with a slightly tweaked fairing set, an upside-down front fork and a full LCD dashboard. The model launched without ABS, but it became an option for 2015. To comply with EU motorbike safety regulations, ABS on motorcycles was required on all new motorbikes in the EU from 2017. This may cause minor differences in weight, electric or other specifications.

### Specifications

These specifications come from the owner's manual of a 2017 model with ABS.
| Dimensions | Overall length | 1950 mm |
| Dimensions | Overall width | 695 mm |
| Dimensions | Overall height | 1065 mm |
| Dimensions | Seat height | 825 mm |
| Dimensions | Wheelbase | 1350 mm |
| Dimensions | Ground clearance | 155 mm |
| Dimensions | Turning radius | 3100 mm |
| Front brake | Disc | Floating, 292 mm |
| Front brake | Caliper | Fixed, 4 piston, Radial mount |
| Engine | Type | Liquid cooled, 4-stroke, SOHC |
| Engine | Displacement | 124.7 cc |
| Engine | Bore x Stroke | 52.0 x 58.6 mm |
| Engine | Compression ratio | 11.2 : 1 |
| Engine | Fuel consumption | (Approximately) 3.0 L / 100 km |
| Weight | Fuel capacity | 11.5 L |
| Weight | Oil capacity | 1.15 L (1.0 L after filter change) |
| Weight | Coolant capacity | 1.0 L (+0.25 L reservoir) |
| Weight | Curb weight | 140 kg |

## Third generation: (2019–2022)

The 2019 model has a new rear swingarm, changes to the frame and bodywork, a new engine with Variable Valve Actuation (VVA). There is a small 2021 update, that adds a vapor canister to the fuel system, presumably to help the bike comply with the more strict Euro 5 emission standard.

### Specifications

As per the owner's manual of the 2021 model.
| Dimensions | Overall length | 1990 mm |
| Dimensions | Overall width | 755 mm |
| Dimensions | Overall height | 1140 mm |
| Dimensions | Seat height | 820 mm |
| Dimensions | Wheelbase | 1325 mm |
| Dimensions | Ground clearance | 160 mm |
| Dimensions | Turning radius | 2900 mm |
| Front brake | Disc | Floating, 292 mm |
| Front brake | Caliper | Fixed, 4 piston, Radial mount |
| Engine | Type | Liquid cooled, 4-stroke, SOHC |
| Engine | Displacement | 124.7 cc |
| Engine | Bore x Stroke | 52.0 x 58.6 mm |
| Engine | Compression ratio | 11.2 : 1 |
| Engine | Fuel consumption | (Approximately) 3.0 L / 100 km |
| Weight | Fuel capacity | 11.0 L |
| Weight | Oil capacity | 1.05 L (0.95 L after filter change) |
| Weight | Coolant capacity | 0.49 L (+0.15 L reservoir) |
| Weight | Curb weight | 142 kg |

## Fourth generation: (2023–on)

The bike yet again received a slight overhaul for the 2023 model year. The changes include some minor tweaks to the suspension like a different caster angle at the front (it is now 26°), and a shorter swingarm travel at the rear (it is now 110 mm down from 114 mm). The front half of the bike has reworked fairings and a new 5” full color TFT dash with smartphone connectivity.