The Yamaha YZF-R125 motorcycle specifications include a 124.7 cc (7.61 cu in) engine, power of 14.8 hp (10.8 kW) @ 8,750 rpm, and a listed weight of 126.5 kg (278.9 lb).
Key specifications
2008, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2021Model years
125 ccDisplacement
14.8 hpPower
12.2 Nm @ 8,750 rpmTorque
126.5 kgDry weight
818 mmSeat height
13.8 LFuel tank
1,355 mmWheelbase
Model years covered
20082011201220132014201520162017201820192021
Year-specific specification changes
The 2008 model is treated as the standard specification. Only later model years with a different supplied value are shown below.
Frame
2011Deltabox steel frame and aluminium swinging arm
2013Steel deltabox frame and aluminium swinging arm
2014Steel deltabox frame
2021Compact deltabox
Front brakes
2015Single disc. Optional ABS
20162017Single disc. Optional ABS. Radial caliper with floating disc.
20182019Single disc. Radial caliper with floating disc.
Front suspension
20172021Upside-down telescopic fork, Ø 41 mm
Front tire
20142021100/80-17
Fuel system
2012Injection. Electronic Fuel Injection
20132021Injection. EFI
Power
201114.8 hp (10.8 kW) @ 9,000 rpm
201314.8 hp (10.8 kW)
2014201515 hp (10.9 kW) @ 9,000 rpm
201815 hp (10.9 kW) @ 9,000 rpm
201911 hp (8.0 kW) @ 9,000 rpm
Rear brakes
20152017Single disc. Optional ABS
Rear suspension
20122021Linked monoshock with spring preload adjustment
Rear tire
20142019130/70-17
2021140/70-17
Torque
201112.2 Nm (1.2 kgf-m or 9.0 ft.lbs) @ 8,000 rpm
2012201312.2 Nm (1.2 kgf-m or 9.0 ft.lbs)
2014201812.2 Nm (1.2 kgf-m or 9.0 ft.lbs) @ 8,000 rpm
201912.4 Nm (1.3 kgf-m or 9.1 ft.lbs) @ 8,000 rpm
202111.5 Nm (1.2 kgf-m or 8.5 ft.lbs) @ 8,000 rpm
Wheelbase
20111,353 mm (53.3 inches)
Clutch
2021Assist and Slipper clutch
Front wheel travel
20112021130 mm (5.1 inches)
Fuel capacity
2014202111.50 L (3.04 US gal)
Ignition
2012TCI (digital)
Overall height
201920211,065 mm (41.9 inches)
Overall length
20191,955 mm (77.0 inches)
20211,935 mm (76.2 inches)
Overall width
2021680 mm (26.8 inches)
Rear wheel travel
20112013125 mm (4.9 inches)
20142021114 mm (4.5 inches)
Seat height
20192021825 mm (32.5 inches)
Mechanical overview
Engine layout snapshot
Single cylinder, four-stroke • 125 cc • Liquid cooled • 14.8 hp
Chassis snapshot
Wheelbase 1,355 mmSeat 818 mmClearance 155 mm
Chain (final drive) • 100/80-M17 front / 130/70-M17 rear
Additional useful specifications
| Front tire size | 100/80-M17 |
|---|---|
| Rear tire size | 130/70-M17 |
| Power-to-weight ratio | 0.117 hp/kg |
| Power-to-weight | 117.0 hp/tonne |
| Specific power | 118.7 hp/L |
| Bore/stroke ratio | 0.89:1 (Undersquare) |
Model information
| Category | Sport |
|---|
Engine specifications
| Engine type | Single cylinder, four-stroke |
|---|---|
| Displacement | 124.7 cc (7.61 cu in) |
| Power | 14.8 hp (10.8 kW) @ 8,750 rpm |
| Torque | 12.2 Nm (1.2 kgf-m or 9.0 ft.lbs) @ 8,750 rpm |
| Bore × stroke | 52.0 x 58.6 mm (2.0 x 2.3 inches) |
| Compression ratio | 11.2:1 |
| Cooling system | Liquid |
| Fuel system | Injection |
| Fuel control | Single Overhead Cams (SOHC) |
| Ignition | TCI |
| Starter | Electric |
| Lubrication | Wet sump |
Transmission and drivetrain
| Final drive | Chain (final drive) |
|---|---|
| Clutch | Wet, multiple-disc coil spring |
Chassis and suspension
| Frame | Steel Deltabox |
|---|---|
| Front suspension | Telescopic forks |
| Rear suspension | Swingarm (monocross) |
| Front wheel travel | 110 mm (4.3 inches) |
| Rear wheel travel | 95 mm (3.7 inches) |
Brakes, wheels and tires
| Front brakes | Single disc |
|---|---|
| Rear brakes | Single disc |
| Front tire | 100/80-M17 |
| Rear tire | 130/70-M17 |
Dimensions and weight
| Dry weight | 126.5 kg (278.9 lb) |
|---|---|
| Seat height | 818 mm (32.2 inches) |
| Overall length | 2,015 mm (79.3 inches) |
| Overall width | 660 mm (26.0 inches) |
| Overall height | 970 mm (38.2 inches) |
| Wheelbase | 1,355 mm (53.3 inches) |
| Ground clearance | 155 mm (6.1 inches) |
Fuel and emissions
| Fuel capacity | 13.80 L (3.65 US gal) |
|---|
Performance
| Power/weight ratio | 0.1166 hp/kg |
|---|
Other specifications
| Color options | Blue/white |
|---|
Disclaimer: Specifications may vary by market, trim, production date and optional equipment, and scraped or historical data can contain errors. Comparison and percentile values are calculated from Yamaha models in this specifications database. Always double-check important specifications against the motorcycle owner’s/service manual and official Yamaha information before relying on them. Visit the official Yamaha website.