Suzuki GSX-S125 - 2018 Specifications and Reviews

The 2018 Suzuki GSX-S125 is an accessible naked bike designed for new riders and commuters seeking a lightweight, manageable platform. Its compact dimensions, low 785mm seat height, and 133kg weight make it ideal for learners building confidence, while the wet clutch and responsive handling deliver engaging everyday performance. Known for reliability and affordability, it represents Suzuki's commitment to entry-level motorcycling.

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General information

CategoryNaked bike
Year2018
ModelSuzuki GSX-S125
 
 

Engine and Transmission Specifications

Greenhouse gases44.5 CO2 g/km. (CO2 - Carbon dioxide emission)
Fuel consumption1.92 litres/100 km (52.1 km/l or 122.51 mpg)
ClutchWet, multi-disc
Transmission type,final driveChain
Gearbox6-speed
Cooling systemLiquid
Lubrication systemWet sump
IgnitionElectric
Fuel controlDouble Overhead Cams/Twin Cam (DOHC)
Fuel systemInjection
Bore x Stroke62.0 x 41.2 mm (2.4 x 1.6 inches)
Compression11.0:1
Torque11.50 Nm (1.2 kgf-m or 8.5 ft.lbs) @ 8000 RPM
Power14.75 HP (10.8 kW) @ 10000 RPM
Engine typeSingle cylinder, four-stroke
Capacity:124.00 ccm (7.57 cubic inches)
 
 

Brakes, suspension, Frame and wheels

Rear brakesSingle disc
Front brakesSingle disc
Rear tyre130/70-M17
Front tyre90/80-M17
Rear SuspensionLink type, coil spring, oil damped
Front SuspensionTelescopic, coil spring, oil damped

Physical measures and capacities

Fuel capacity11.00 litres (2.91 gallons)
Wheelbase1,300 mm (51.2 inches)
Ground clearance165 mm (6.5 inches)
Overall width745 mm (29.3 inches)
Overall length2,020 mm (79.5 inches)
Overall height1,035 mm (40.7 inches)
Seat height785 mm (30.9 inches) If adjustable, lowest setting.
Weight incl. oil, gas, etc133.0 kg (293.2 pounds)

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
StarterElectric
Color optionsRed, black

Performance Profile & Rider Fit

15 hp
Peak Power

Best For

Track20%
City90%
Cornering60%
Daily Riding80%
Touring25%
Passenger30%

Rider Profile

Best ForIdeal for beginners, learner-permit riders, or anyone wanting a low-stakes introduction to motorcycling.
PurposeBuilt primarily for commuting and urban riding rather than performance or long-distance travel.
Rider FitVery light weight and low seat height make it easy to handle for riders of smaller stature or less physical strength.
CharacterA friendly, approachable naked bike with playful styling but modest performance, prioritizing efficiency and ease of use over excitement.
Not Ideal ForNot suitable for experienced riders seeking high speed, highway touring comfort, or off-road capability.

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

Rider Fit Visualizer

2018 Suzuki GSX-S125 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 Suzuki GSX-S125, with a moderate knee angle of around 115 degrees and a slightly forward 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 Suzuki GSX-S125 is a fantastic entry-level motorcycle that offers a great combination of power, agility, and style. With a sleek and sporty design, this bike is sure to turn heads on the road. The 125cc engine provides plenty of pep for urban commuting, while still being fuel-efficient. The handling and suspension are top-notch, making it a joy to ride in various conditions. Whether you're a beginner or a seasoned rider, the GSX-S125 is an excellent choice for anyone looking for a reliable and fun motorcycle. Overall, the 2018 Suzuki GSX-S125 is a highly recommended motorcycle for those in the market for a stylish and capable ride. With its powerful yet efficient engine, sleek design, and excellent handling, this bike is sure to impress riders of all experience levels. It's a great value for the price and is perfect for navigating city streets or hitting the open road. If you're in the market for a new motorcycle, the GSX-S125 is definitely worth considering.
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