The Honda CB125F motorcycle specifications include a 124.8 cc (7.62 cu in) engine, power of 8.5 hp (6.2 kW) @ 8,590 rpm, a 4-speed gearbox, and a listed weight of 128 kg (282.2 lb).
Key specifications
2015, 2017, 2018, 2019, 2021, 2022, 2023Model years
125 ccDisplacement
8.5 hpPower
10.1 Nm @ 6,250 rpmTorque
128 kgWet weight
775 mmSeat height
10 LFuel tank
1,295 mmWheelbase
Model years covered
2015201720182019202120222023
Year-specific specification changes
The 2015 model is treated as the standard specification. Only later model years with a different supplied value are shown below.
Bore × stroke
2017201952.4 x 57.8 mm (2.1 x 2.3 inches)
2021202350.0 x 63.1 mm (2.0 x 2.5 inches)
Compression ratio
2021202310.0:1
Displacement
20172019124.7 cc (7.61 cu in)
20212023123.9 cc (7.56 cu in)
Frame
20182019Diamond, steel
20212023Tubular steel
Front brakes
20172023Single disc. Two-piston calipers.
Front suspension
2017120mm telescopic fork (31mm diameter)
20182019Telescopic fork (31mm diameter)
20212023Telescopic fork, 31 mm
Fuel system
20212023Injection. PGM-FI
Gearbox
201720235-speed
Power
201710.5 hp (7.6 kW) @ 7,750 rpm
2019202110.5 hp (7.6 kW) @ 7,750 rpm
2022202310.7 hp (7.8 kW) @ 7,500 rpm
Rear suspension
20212023Dual Swingarm, 5 stage prload
Torque
2017201910.2 Nm (1.0 kgf-m or 7.5 ft.lbs) @ 6,250 rpm
202110.4 Nm (1.1 kgf-m or 7.7 ft.lbs) @ 6,250 rpm
2022202310.9 Nm (1.1 kgf-m or 8.0 ft.lbs) @ 6,000 rpm
Wet weight
20212023117 kg (257.9 lb)
Wheelbase
202120221,286 mm (50.6 inches)
20231,280 mm (50.4 inches)
Fuel capacity
2017201913.00 L (3.43 US gal)
2021202311.00 L (2.91 US gal)
Overall height
20211,103 mm (43.4 inches)
202220231,100 mm (43.3 inches)
Overall length
20172,026 mm (79.8 inches)
20212,020 mm (79.5 inches)
202220232,015 mm (79.3 inches)
Overall width
2021785 mm (30.9 inches)
20222023750 mm (29.5 inches)
Seat height
20212023790 mm (31.1 inches)
Starter
20172023Electric
Wheels
20172023Six spoke cast aluminium
Mechanical overview
Engine layout snapshot
Single cylinder, four-stroke • 125 cc • Air cooled • 8.5 hp
Chassis snapshot
Wheelbase 1,295 mmSeat 775 mm
4-speed • Chain (final drive) • 80/100-18 front / 90/90-18 rear
Additional useful specifications
| Front tire size | 80/100-18 |
|---|---|
| Rear tire size | 90/90-18 |
| Front tire width | 80 mm |
| Front tire aspect ratio | 100% |
| Front rim diameter | 18 in |
| Rear tire width | 90 mm |
| Rear tire aspect ratio | 90% |
| Rear rim diameter | 18 in |
| Engine oil capacity | 1.00 L (1.06 US qt) |
| Power-to-weight ratio | 0.066 hp/kg |
| Power-to-weight | 66.4 hp/tonne |
| Specific power | 68.1 hp/L |
| Bore/stroke ratio | 0.91:1 (Undersquare) |
Model information
| Category | Sport |
|---|
Engine specifications
| Engine type | Single cylinder, four-stroke |
|---|---|
| Displacement | 124.8 cc (7.62 cu in) |
| Power | 8.5 hp (6.2 kW) @ 8,590 rpm |
| Torque | 10.1 Nm (1.0 kgf-m or 7.5 ft.lbs) @ 6,250 rpm |
| Bore × stroke | 52.4 x 57.9 mm (2.1 x 2.3 inches) |
| Compression ratio | 9.2:1 |
| Cooling system | Air |
| Fuel system | Carburettor |
| Fuel control | Overhead Cams (OHC) |
| Ignition | DC-CDI |
| Starter | Electric & kick |
| Oil capacity | 1.00 L (1.06 US qt) |
Transmission and drivetrain
| Gearbox | 4-speed |
|---|---|
| Final drive | Chain (final drive) |
Chassis and suspension
| Frame | Diamond |
|---|---|
| Front suspension | Telescopic fork |
| Rear suspension | Dual rear shocks with 5-step spring preload adjustment |
| Front wheel travel | 118 mm (4.6 inches) |
| Rear wheel travel | 70 mm (2.8 inches) |
Brakes, wheels and tires
| Front brakes | Single disc. Dual piston |
|---|---|
| Rear brakes | Expanding brake (drum brake) |
| Front tire | 80/100-18 |
| Rear tire | 90/90-18 |
| Wheels | Spoke cast aluminium |
Dimensions and weight
| Wet weight | 128 kg (282.2 lb) |
|---|---|
| Seat height | 775 mm (30.5 inches) |
| Overall length | 2,035 mm (80.1 inches) |
| Overall width | 765 mm (30.1 inches) |
| Overall height | 1,080 mm (42.5 inches) |
| Wheelbase | 1,295 mm (51.0 inches) |
Fuel and emissions
| Fuel capacity | 10.00 L (2.64 US gal) |
|---|---|
| Reserve fuel capacity | 2.50 L (0.66 US gal) |
Other specifications
| Color options | Yellow |
|---|---|
| Seat | Two-person seat |
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 Honda models in this specifications database. Always double-check important specifications against the motorcycle owner’s/service manual and official Honda information before relying on them. Visit the official Honda website.