Suzuki GSX R125

Production years: 2017–2026
Brand: Suzuki

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Selected year: 2026

Technical specifications

Engine capacity: 124 cm³
Power: 15 hp (11 kW) at 10,500 rpm
Wet weight: 137 kg
Seat height: 785 mm

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Overview

The Suzuki GSX R125 is a sportbike produced from 2017 to 2026. For 2026, it has a liquid-cooled, 124 cm³, four-stroke single producing 15 hp (11 kW) at 10,500 rpm and 11 Nm of torque at 8,000 rpm; wet weight is 137 kg.

The 785 mm seat and 137 kg wet weight give the bike a relatively low seat and light mass to manage when moving slowly. Power peaks at high rpm, so getting the most from the engine means revving it; fuel consumption of 2 L/100 km and an 11 L tank give a calculated range of about 550 km. ABS is fitted to both brakes, and the 2026 fuel consumption is 2 L/100 km, up from 1.9 L/100 km in 2024.

Specifications

Engine

Bore x stroke: 62.0 x 41.2 mm
Engine capacity: 124 cm³
Compression ratio: 11.0:1
Cooling system: Liquid
Engine type: Single, four-stroke
Fuel system: Injection
Ignition: Electric
Lubrication system: Wet sump
Starting: Electric

Performance and transmission

Fuel consumption: 2 L/100 km
Power: 15 hp (11 kW) at 10,500 rpm
Power weight ratio: 0.1080 HP/kg (wet)
Top speed: 115.9 km/h (72.0 mph)
Torque: 11 Nm at 8,000 rpm
Clutch: Wet, multi-disc
Final drive: Chain
Gearbox: Manual 6-speed
Transmission type: Manual

Dimensions and weight

Fuel capacity: 11 L
Ground clearance: 155 mm
Overall height: 1,070 mm
Overall length: 2,000 mm
Overall width: 700 mm
Seat height: 785 mm
Wet weight: 137 kg
Wheelbase: 1,300 mm

Chassis and suspension

Front suspension: Telescopic, coil spring, oil damped
Rear suspension: Link type, coil spring, oil damped

Brakes and wheels

Abs: Yes
Front brakes: Single disc. Petal disc. ABS
Front brakes diameter: 290 mm
Front tyre: 90/80-17
Rear brakes: Single disc. Petal disk. ABS.
Rear tyre: 130/70-17

Colours and equipment

Colours: Pearl Brilliant White/Metallic Triton Blue, Titan Black/ Solid Black, Metallic Triton Blue, Titan Black

Model years

2018

Power: 15 hp (11 kW) → 15 hp (11 kW)

2021

Power: 15 hp (11 kW) → 15 hp (11 kW)

2023

Power: 15 hp (11 kW) → 15 hp (11 kW); Torque: 11.5 Nm → 11 Nm; Wet weight: 134 kg → 137 kg

2025

Fuel consumption: 1.9 L/100 km → 2 L/100 km

Specification
Engine capacity	124 cm³	124 cm³	124 cm³	124 cm³	124 cm³	124 cm³
Power	15 hp (11 kW)	15 hp (11 kW)	15 hp (11 kW)	15 hp (11 kW)	15 hp (11 kW)	15 hp (11 kW)
Torque	11.5 Nm	11.5 Nm	11 Nm	11 Nm	11 Nm	11 Nm
Wet weight	134 kg	134 kg	137 kg	137 kg	137 kg	137 kg
Seat height	785 mm	785 mm	785 mm	785 mm	785 mm	785 mm
Fuel capacity	11 L	11 L	11 L	11 L	11 L	11 L

Pros and cons

Advantages

ABS on both brakes
ABS at the front and rear helps reduce the chance of wheel lock during hard braking.
Light wet weight
At 137 kg wet, it is relatively easy to maneuver at low speeds.
Long calculated range
The 11 L tank and 2 L/100 km consumption give a calculated range of about 550 km.

Things to consider

Power arrives high in the rev range
Peak power comes at 10,500 rpm, so the engine needs to be revved to deliver its full output.
Chain final drive
The chain needs periodic cleaning, lubrication, and adjustment.

Rider fit

Rider fit calculator

Calculated in your browser

Seat height: 785 mmInseam 78.9 cm

Seat height: 785 mm

Your height

Inside leg lengthOptional

Don't know it? Leave this empty and we'll estimate it from your height.

Estimated from your height: 79 cm

How to measure

Stand barefoot with your back to a wall. Hold a book firmly between your legs, then measure from the floor to the top edge of the book.

Estimated ground reach

Both feet likely flat

You should have a stable stance at a stop, although seat width and suspension setup still matter.

Seat height

785 mm

Approx. loaded height

755 mm

Estimate assumes about 30 mm of suspension sag. Seat width, footwear, luggage and suspension settings can change real reach. Always sit on the motorcycle before buying.