Honda CRF125F Big Wheel - 2018 Specifications and Reviews

The 2018 Honda CRF125F Big Wheel is an entry-level dirt bike engineered for young riders and beginners seeking a manageable, confidence-building platform. Known for its larger wheels, low 785mm seat height, and stable Pro-Link suspension, it delivers predictable handling and easy ground reach. Its lightweight 88kg frame and moderate power make it ideal for learning fundamental riding skills off-road.

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General information

CategoryEnduro / offroad
Year2018
ModelHonda CRF125F Big Wheel

Engine and Transmission Specifications

Emission detailsMeets current California Air Resources Board (CARB) and EPA off-road emissions standards.
Driveline#520 O-ring-sealed chain; 13T/48T
Transmission type,final driveChain
Gearbox5-speed
Cooling systemAir
IgnitionDC-CDI
Fuel controlSingle Overhead Cams (SOHC)
Fuel systemCarburettor. 240mm piston-valve carburetor
Valves per cylinder2
Bore x Stroke52.4 x 57.8 mm (2.1 x 2.3 inches)
Compression9.5:1
Engine typeSingle cylinder, four-stroke

Brakes, suspension, Frame and wheels

Rear brakes diameter149 mm (5.9 inches)
Rear brakesExpanding brake (drum brake)
Front brakes diameter240 mm (9.4 inches)
Front brakesSingle disc
Rear tyre90/100-16
Front tyre70/100-19
Rear wheel travel150 mm (5.9 inches)
Rear SuspensionPro-Link® single-shock
Front wheel travel150 mm (5.9 inches)
Front Suspension31mm telescopic fork
Trail94 mm (3.7 inches)
Rake (fork angle)27.3°
Frame typeDiamond, steel
 
 

Physical measures and capacities

Reserve fuel capacity1.51 litres (0.40 gallons)
Fuel capacity7.19 litres (1.90 gallons)
Wheelbase1,255 mm (49.4 inches)
Seat height785 mm (30.9 inches) If adjustable, lowest setting.
Weight incl. oil, gas, etc88.0 kg (194.0 pounds)

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
CommentsModel ID: CRF125FB
ElectricalMaintenance-free sealed battery
StarterElectric
Color optionsRed

Performance Profile & Rider Fit

Best For

Track5%
City20%
Cornering30%
Daily Riding25%
Touring5%
Passenger5%

Rider Profile

Best ForThis bike is designed for young or beginner riders, typically pre-teens, who are progressing from smaller trail bikes.
PurposeIt's built for casual off-road trail riding, backyard fun, and learning basic motorcycle skills in a low-stakes environment.
Rider FitThe low 29.1 inch seat height and light 194 lb wet weight make it manageable for smaller or lighter-statured riders.
CharacterIt has a friendly, forgiving, and unintimidating character with mild power delivery suited to building confidence.
Not Ideal ForIt is not suitable for adult riders, highway use, or anyone seeking speed, long-distance touring, or passenger capability.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.

Rider Fit Visualizer

2018 Honda CRF125F Big Wheel Rider Ergonomics Assessment

Calculated in your browser only - your height/inseam are never sent to our servers.

Feet:

At 785mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with both feet flat on the 2018 Honda CRF125F Big Wheel, with a cramped knee angle of around 65 degrees and an upright riding position.

Data quality: measured. Assumes about 30mm of suspension sag once seated (a typical street-bike rule of thumb - stiffer or softer suspension will vary). This is an approximation from category-typical geometry and generic body proportions, not a measurement of this specific bike or you - sit on it before you buy.

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Rider Reviews

Total comments: 1
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MotorcycleDB Review

The 2018 Honda CRF125F Big Wheel is a top-notch motorcycle that offers both power and agility. With a 125cc engine, this bike delivers ample power for both off-road adventures and urban commutes. The big wheel design provides superior stability and control, making it a great choice for riders of all skill levels. The bike's sleek and modern design is sure to turn heads, and its dependable performance will keep riders coming back for more. In addition to its impressive performance, the 2018 Honda CRF125F Big Wheel offers a comfortable and ergonomic riding experience. Its suspension system and wide seat provide a smooth and cushioned ride, while its responsive handling makes it easy to navigate through various terrains. Whether you're a seasoned rider or just starting out, this motorcycle is a standout choice for those looking for a reliable and versatile bike. With its combination of power, style, and comfort, the 2018 Honda CRF125F Big Wheel is a great option for anyone in the market for a new motorcycle.
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