Yamaha YZF-R125
ManufacturerYamaha Motor Company
Also calledYamaha R125
Production2008–
PredecessorYamaha TZR125
ClassSport bike
Engine124.7 cc (7.61 cu in) liquid-cooled 4-stroke 4-valve SOHC single-cylinder engine[1]
Bore / stroke52.0 mm × 58.6 mm (2.05 in × 2.31 in)
Compression ratio11.2:1
Ignition typeTCI
Transmission6-speed constant mesh, wet, multiple-disc coil spring clutch, chain drive
Frame typeSteel twin-spar Deltabox
SuspensionFront: 41 mm inverted fork
Rear: Swingarm (link type)
BrakesHydraulic disc; front: 292 mm floating disc
Rear: 230 mm
TiresFront: 100/80-17
Rear: 130/70-17 (2008-2013) 140/70-17 (2014+)
Rake, trail25°, 89 mm (3.5 in)
Wheelbase1,325 mm (52.2 in)
DimensionsL: 1,990 mm (78 in)
W: 755 mm (29.7 in)
H: 1,140 mm (45 in)
Seat height820 mm (32 in)
Fuel capacity11.0 L (2.4 imp gal; 2.9 US gal)
Oil capacity1.15 L (0.25 imp gal; 0.30 US gal)

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
Overall width 660 mm
Overall height 1065 mm
Seat height 815 mm
Wheelbase 1355 mm
Ground clearance 155 mm
Turning radius 3100 mm
Fork leg diameter 33 mm
Front brake Disc Fixed, 292 mm
Caliper Floating, 2 piston, axial mount
Engine Type Liquid cooled, 4-stroke, SOHC
Displacement 124.7 cc
Bore x Stroke 52.0 x 58.6 mm
Compression ratio 11.2 : 1
Fuel consumption (Approximately) 3.0 L / 100 km
Weight Fuel capacity 13.8 L
Oil capacity 1.15 L (1.0 L after filter change)
Coolant capacity 1.0 L (+0.25 L reservoir)
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
Overall width 695 mm
Overall height 1065 mm
Seat height 825 mm
Wheelbase 1350 mm
Ground clearance 155 mm
Turning radius 3100 mm
Front brake Disc Floating, 292 mm
Caliper Fixed, 4 piston, Radial mount
Engine Type Liquid cooled, 4-stroke, SOHC
Displacement 124.7 cc
Bore x Stroke 52.0 x 58.6 mm
Compression ratio 11.2 : 1
Fuel consumption (Approximately) 3.0 L / 100 km
Weight Fuel capacity 11.5 L
Oil capacity 1.15 L (1.0 L after filter change)
Coolant capacity 1.0 L (+0.25 L reservoir)
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
Overall width 755 mm
Overall height 1140 mm
Seat height 820 mm
Wheelbase 1325 mm
Ground clearance 160 mm
Turning radius 2900 mm
Front brake Disc Floating, 292 mm
Caliper Fixed, 4 piston, Radial mount
Engine Type Liquid cooled, 4-stroke, SOHC
Displacement 124.7 cc
Bore x Stroke 52.0 x 58.6 mm
Compression ratio 11.2 : 1
Fuel consumption (Approximately) 3.0 L / 100 km
Weight Fuel capacity 11.0 L
Oil capacity 1.05 L (0.95 L after filter change)
Coolant capacity 0.49 L (+0.15 L reservoir)
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.

References

  1. "YZF-R125 2013 Techspecs – Motorcycles". Yamaha Motor UK. 17 November 2011. Archived from the original on 31 March 2013. Retrieved 31 March 2013.


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