The Honda Grom 125 motorcycle specifications include a 124.9 cc (7.62 cu in) engine, a 4-speed gearbox, and a listed weight of 102.1 kg (225 lb).
Key specifications
How the Honda Grom 125 compares
This compares the motorcycle with all Honda models in this specifications database. The blue marker is this model and the grey line is the Honda database average.
About 78% lower than the Honda database average. Around the 17th percentile across Honda models.
About 48% lighter than the Honda database average. Around the 9th percentile across Honda models.
Very close to the Honda database average. Around the 34th percentile across Honda models.
About 59% smaller than the Honda database average. Around the 10th percentile across Honda models.
Honda database percentile rankings
Percentiles show where this motorcycle sits across the Honda specifications database. They are descriptive database rankings, not performance ratings.
125 cc — larger displacement than about 17% of Honda models.
102.1 kg — heavier than about 9% of Honda models, or lighter than about 91%.
754 mm — taller than about 34% of Honda models.
5.5 L — larger than about 10% of Honda fuel tanks in this database.
Dimensions compared with Honda average
Each measurement is compared with the average value across Honda models where that dimension is available.
1,199
1,431
16% below average.
754
780
3% below average.
Mechanical overview
Additional useful specifications
| Front tire size | 120/70-12 |
|---|---|
| Rear tire size | 130/70-12 |
| Front tire width | 120 mm |
| Front tire aspect ratio | 70% |
| Front rim diameter | 12 in |
| Rear tire width | 130 mm |
| Rear tire aspect ratio | 70% |
| Rear rim diameter | 12 in |
| Bore/stroke ratio | 0.91:1 (Undersquare) |
Model information
| Year released | 2015 |
|---|
Engine specifications
| Engine type | Single cylinder, four-stroke |
|---|---|
| Displacement | 124.9 cc (7.62 cu in) |
| Bore × stroke | 52.4 x 57.9 mm (2.1 x 2.3 inches) |
| Compression ratio | 9.3:1 |
| Valves per cylinder | 2 |
| Cooling system | Air |
| Fuel system | Injection. PGM-FI with automatic enrichment |
| Fuel control | Single Overhead Cams (SOHC) |
| Ignition | Electronic |
| Starter | Electric |
Transmission and drivetrain
| Gearbox | 4-speed |
|---|---|
| Final drive | Chain (final drive) |
Chassis and suspension
| Front suspension | 31mm inverted fork |
|---|---|
| Rear suspension | Single shock with steel box-section swingarm |
| Front wheel travel | 118 mm (4.6 inches) |
| Rear wheel travel | 70 mm (2.8 inches) |
| Rake | 25.0° |
| Trail | 81 mm (3.2 inches) |
Brakes, wheels and tires
| Front brakes | Single disc. Hydraulic. Two-piston calipers. |
|---|---|
| Rear brakes | Single disc. Hydraulic. Single-piston caliper. |
| Front tire | 120/70-12 |
| Rear tire | 130/70-12 |
Dimensions and weight
| Wet weight | 102.1 kg (225 lb) |
|---|---|
| Seat height | 754 mm (29.7 inches) |
| Wheelbase | 1,199 mm (47.2 inches) |
Fuel and emissions
| Fuel capacity | 5.49 L (1.45 US gal) |
|---|---|
| Emission details | Meets current EPA standards. Models sold in California meet current CARB standards and may differ slightly due to emissions equipment. |
Other specifications
| Color options | Black, Red, Yellow, Pearl White |
|---|---|
| Factory warranty | One year. Unlimited milage. Transferable. |
| Comments | Model ID: Grom125 |
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.