Yamaha YZF-R125

The Yamaha YZF-R125 is a sport motorcycle designed by Yamaha and manufactured by MBK Industrie since 2008. In 2020 the model was in its third generation.

For the chemical compound also referred to as R-125, see Pentafluoroethane.

Yamaha YZF-R125 2019–
ManufacturerYamaha Motor Company
Also calledYamaha R125
ProductionSince 2008
PredecessorYamaha TZR125
ClassSport bike
Engine124.7 cc (7.61 cu in) liquid-cooled 4-stroke 4-valve SOHC single-cylinder[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: 41mm inverted fork
Rear: Swingarm (link type)
BrakesFront: Single 292mm hydraulic disc
Rear: Single 230mm hydraulic disc
TiresFront: 100/80-17
Rear: 140/70-17
Rake, trail25°, 89 mm (3.5 in)
Wheelbase1,325 mm (52.2 in)
DimensionsL: 1,990 mm (78.3 in)
W: 755 mm (29.7 in)
H: 1,140 mm (44.9 in)
Seat height820 mm (32.3 in)
Weight142 kg (313.1 lb) (wet)
Fuel capacity11.0 L (2.4 imp gal; 2.9 US gal)
Oil capacity1.15 L (0.25 imp gal; 0.30 US gal)

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 818 mm
Wheelbase 1355 mm
Ground clearance 155 mm
Turning radius 3100 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
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 (claimed) 138 kg[2]

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, and comes as a standard equipment on all bikes since 2017. This may cause minor differences in weight, electric or other specifications.
In 2016, the LCD instrument received a minor revision, in which the segment arrangement for various gauges has been slightly modified, including a horizontal tacho instead of a vertical one.

2014 to 2015
2016 to 2018
Yamaha YZF-R125 LCD instrument comparison.

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
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 (with fuel) 143 kg

Third generation: (2019 - on)

The 2019 revision brings some major changes: New rear swingarm, tweaked frame, rebuilt cowling, a new engine with Variable Valve Actuation (VVA) and many other minor modifications add up to a brand new construction.
With this release, Yamaha brings its R-serises superbikes aesthetically more or less in line with each other.

The top speed on the factory version of the Yamaha YZF-R125 is 85 mph[3] (137kmh) [4]

Specifications

As per the owner's manual of a 2020 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
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 (claimed) 142 kg[5]

References
  1. "YZF-R125 2013 Techspecs - Motorcycles". Yamaha Motor UK. 17 November 2011. Retrieved 31 March 2013.
  2. factory service manual for the 2008 model
  3. DNS Crew (17 September 2019), YAMAHA YZF-R125 0-100 KM/H + TOP SPEED!!!, retrieved 5 October 2019
  4. https://www.motorcyclenews.com/news/new-bikes/yamaha-yzf-r125-2019/
  5. Factory owner's manual for the 2020 model


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