Naked Motorcycles
2021Herald Brat 125
21 fields on record
The 2021 Herald Brat 125 is a retro brat-style learner bike from the UK brand Herald. Its air-cooled 124cc single makes 9.9 hp through a six-speed gearbox, for a top speed of about 112 km/h. An 820 mm seat, 147 kg dry weight and 10-litre tank suit stylish city riding.
- Capacity
- 124.0 ccm
- Engine
- Single, four-stroke
- Gearbox
- 6-speed
- Dry weight
- 147.0 kg
- Seat height
- 820 mm
- Power
- 9.9 HP (7.2 kW)
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- It's built for gentle commuting, running errands, and casual weekend rides around town rather than any kind of performance riding.
- Built for
- It has a simple, retro-styled, easygoing personality that favors charm and practicality over outright performance.
- Not ideal for
- It's not for riders wanting motorway speed, long-distance touring comfort, or any serious off-road capability.
Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.
Will it fit you?
Worked out in your browser - nothing is sent to usEngine
- Capacity
- 124.0 ccm
- Power
- 9.9 HP (7.2 kW)
- Engine type
- Single, four-stroke
- Power/weight ratio
- 0.0673 HP/kg (dry)
- Cooling system
- Air
- Fuel system
- Carburettor
- Starting
- Electric
- Torque
- Not on record - add it
Transmission
- Gearbox
- 6-speed
- Transmission type
- Manual
Performance
- Top speed
- 112.0 km/h (69.6 mph)
Dimensions & weight
- Seat height
- 820 mm
- Dry weight
- 147.0 kg
- Fuel capacity
- 10.00 litres
Chassis & suspension
- Frame
- Steel
- Front suspension
- USD telescopic fork
- Rear suspension
- Monoshock
Brakes & wheels
- Front brakes
- Single disc
- Rear brakes
- Single disc
Other
- Color options
- Green, grey, yellow
- Comments
- UK brand.
Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.
What changed, year to year
Differences highlighted| Specification | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|
| Capacity | 124 cc | 124 cc | 124 cc | 124 cc | 124 cc |
| Dry weight | 147 kg | 147 kg | 147 kg | 147 kg | 147 kg |
| Seat height | 820 mm | 820 mm | 820 mm | 820 mm | 820 mm |
| Fuel capacity | 10 L | 10 L | 10 L | 10 L | 10 L |
Illustrative - generated automatically by diffing the year records already on file, not a manufacturer-published changelog.
Rider Reviews
Common questions
What is the engine size of the Herald Brat 125?
The 2021 Herald Brat 125 has a Capacity of 124.0 ccm (7.57 cubic inches).
What engine power does the Herald Brat 125 have?
The 2021 Herald Brat 125 has a Power of 9.9 HP (7.2 kW).
How many gears does the Herald Brat 125 have?
The 2021 Herald Brat 125 has a Gearbox of 6-speed.
How much does the Herald Brat 125 weigh?
The 2021 Herald Brat 125 has a Dry weight of 147.0 kg (324.1 pounds).
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