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GSX-S125 A True Streetbike

A True Streetbike

Meet the lightweight king of the streets, the Suzuki GSX-S125. It has excellent power-to-weight ratio and acceleration in the 125cc street sport class.

Suzuki 360 Model
  • 15

    Power (ps)
  • 124.4

    Engine (cc)
  • 135

    Weight (kg)
  • 117.70

Overall length 2000mm (78.7in) Overall width 745mm (29.33in)
Overall height 1035mm (40.7in) Wheelbase 1300mm (51.18in)
Ground clearance 165mm (6.5in) Seat height 785mm (30.91in)
Kerb mass 135.0kg (293.21lbs) Fuel capacity 11.0 litres (2.4UK gallons)
Engine capacity 124cc Engine 4-stroke, 1-cylinder, liquid-cooled, DOHC
Bore 62.0mm x 41.2mm (2.4in x 1.6in) Compression ratio 11.0 : 1
Lubrication Wet sump Ignition Electronic ignition
Fuel System Fuel Injection Transmission 6-speed, constant mesh
Drive Chain Starter Electric
MPG* 117.70 CO2 55g/km
Power 11.0 kW @ 10500rpm (15PS) Torque 11.00Nm @ 8500rpm (8.12lb.ft)
Front suspension Telescopic, coil spring, oil damped Rear suspension Link type, coil spring, oil damped
Front brakes Disc (Petal) Rear brakes Disc (Petal)
Front tyres 90/80-17M/C Rear tyres 130/70-17M/C

Performance for The Streets

A dependable, comfortable, nimble motorcycle that also delivers genuine Suzuki high-performance. It is made to handle city traffic jams while commuting to work during the week. And it is also an exciting motorcycle ready for fun rides into the countryside or even a track ride on weekends.


The chassis design of the GSX-S125 is light and compact, giving the rider ultimate control on the streets for a fast and agile ride. For a street bike low weight is key, this helps deliver a bike with responsive and rewarding handling as well as added confidence on the street.

Lightweight ABS

The Anti-lock Brake System (ABS) is the latest Bosch ABS 10 base unit, which is the lightest and most compact two-channel ABS system on the market.¹ The sporty-looking petal-design 290mm front disc works with a dual-piston caliper and the 187mm petal-design rear disc works with a single-piston caliper, both delivering excellent braking performance.

Light Aluminium Wheels

Contributing to the bikes low weight are the 10 spoke cast aluminium wheels. Having light weight wheels helps ensure great handling, for a ride that’s fun and a machine that goes exactly where you want it to. The slim design of the spokes also adds to this GSX-S’s aggressive street looks, along with the sporty petal type brake discs front and rear.

Styled for the Streets

The GSX-S125 has exciting, aggressive style that transforms it into a rolling work of motorcycle art. It starts at the front with a modern headlight cowl and instrument module, and continues with a sculpted fuel tank and extended upper side cowlings, plus a lower engine cowling. The tail section and side panels extend forward and reach underneath the fuel tank, unifying the design.

LED Lighting

The GSX-S125 features vertically stacked LED headlights, with the low beam above the high beam, and position lights on each side of the headlight. The GSX-S125’s LED headlights are bright and compact, lighter and longer lasting compared to conventional halogen-bulb headlights seen on competing machines.

LCD Instruments

The GSX-S125 has a full LCD instrument panel set in a modern dashboard, framed by turn signal, neutral, hi-beam, coolant temperature, malfunction indicator lamp (MIL), ABS¹, and programmable engine-RPM indicator lights.

GSX-S125 Accessory Packs

Price Includes VAT & Fitting

Rear Seat Tail Cover Tank Bag Small (Including Fixation Ring) Tank Pad Protector Heel Plate Protection Set

Street Accessory Pack

£300 Customer Saving £40!
  1. Rear Seat Tail Cover
  2. Tank Bag Small (Including Fixation Ring)
  3. Tank Pad Protector
  4. Heel Plate Protection Set

GSX-S125 Accessories

Rear Seat Tail Cover (Blue)

Enhance the Sporty style of your bike. Makes it a real single seater. Cover colour-keyed to machine. Part No. 45550-23810-YSF


Price includes VAT but excludes fitting

Rear Seat Tail Cover

Enhance the Sporty style of your bike. Makes it a real single seater. Cover colour-keyed to machine. Part No. 45550-23810-291


Price includes VAT but excludes fitting

Rear Seat Tail Cover

Enhance the Sporty style of your bike. Makes it a real single seater. Cover colour-keyed to machine. Part No. 45550-23810-YVU


Price includes VAT but excludes fitting

Graphics Kit

Cowling & Fork Stickers. 4pc set. Part No. 990D0-23K07-WHT


Price includes VAT but excludes fitting

Rear Wheel Service Stand

Secure your machine for maintenance. Part No. 990D0-STAND-020


Price includes VAT but excludes fitting

Tank Pad Protector (Black/Carbon)

Protects your tank from scuffs & marks. Part No. 990D0-23K01-CRB


Price includes VAT but excludes fitting

Tank Pad Protector (Black)

Protects your tank from scuffs & marks. Part No. 990D0-23K01-BLK


Price includes VAT but excludes fitting

Fuel Cap Protection Trim

Protects your fuel tank from scuffs and marks. Part No. 990D0-17K04-CRB (Carbon Look)


Price includes VAT but excludes fitting

Fuel Cap Protection Trim (Black)

Protects your fuel tank from scuffs and marks. Part No. 990D0-17K04-BLK (Piano Black)


Price includes VAT but excludes fitting

Heel Plate Protection Set

Protects your heel plate from scuffs and marks. Part No. 990D0-23K05-CRB


Price includes VAT but excludes fitting

Tank Bag Small

5ltr extending to 9ltr. Rain cover & shoulder belt included. Use with Fixation Ring 990D0-04105-000. Part No. 990D0-04300-000


Price includes VAT but excludes fitting

Tank Bag Fixation Ring

To be used with Tank Bag Small & Large 990D0-04600-000 & 990D0-04300-000. Part No. 990D0-04105-000


Price includes VAT but excludes fitting

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Finance Calculator

This quotation is indicative, subject to change and does not constitute an offer of credit. A full quotation is available from your local dealer.

Suzuki GB plc is a credit broker and not a lender. Suzuki GB plc introduces you to a dealer which acts as a credit broker in its own right. That dealer may go on to introduce you to Suzuki Financial Services Limited as a lender. Suzuki GB plc will be paid a share of any profits made by Suzuki Financial Services Limited as a  result of these introductions. The share of the profits will be the same, no matter what interest rate that you pay. 

Suzuki Insurance

Specialist Insurance for your Suzuki Motorcycle


From 3 Year Warranty through to our Service Promise, when you buy a Suzuki, you're getting much more than your bike.

3 Year Warranty

Order your new Suzuki motorcycle at one of our approved Suzuki Dealers and benefit from not only our standard 2-year Warranty, but also our Extended 3 Year Warranty, giving you an extra year of peace of mind! 

Service Promise

Suzuki Service Promise

Our Suzuki Service Promise means that you will experience superior levels of care and leave impressed by the little extras we include as standard.

Roadside Assistance

Suzuki AA Roadside Assistance 

For added peace of mind all new Suzuki motorcycles come with one year’s AA Suzuki Roadside Assistance. The team are here to keep you going – even if it's simply a case of lost keys, a flat tyre or you’ve run out of petrol.

Terms and Conditions


* Fuel economy was measured by Suzuki in the Worldwide Motorcycle Test Cycle (WMTC). Exhaust emissions measuring conditions measured by Suzuki. Actual fuel economy and riding range may differ owing to differences in conditions such as the weather, road, rider behaviour and maintenance.
Torque conversions to imperial units (in brackets) are approximate and included as a guide only.
  Suzuki 3 year warrantyAll new Suzuki On-Road motorcycles officially imported into the United Kingdom by Suzuki GB PLC and first registered in the UK between 01-01-2022 and 31-12-2022 will benefit from an additional one year extension to the normal Two-Year Suzuki Warranty, such one year Warranty extension to apply subject to the following conditions:
If you are a consumer, this extended Warranty is in addition to, and does not affect, your legal rights in relation to products that are faulty or not as described.
¹ ABS is not designed to shorten the braking distance. Please always ride at a safe speed for road and weather conditions, including while cornering.
  Specifications, appearance, colours (including body colour), equipment, materials and other aspects of the “SUZUKI” products shown on this website are subject to change by Suzuki at any time without notice. Each model may be discontinued without notice. Please enquire at your local dealer for details of any such changes. Images contain computer-generated composites and may include optional accessories. All images are of professional riders under closed road conditions. Always wear a helmet, eye protection and protective clothing. Read your Owner’s Manual carefully. Enjoy riding safely. Never ride under the influence of alcohol or other drugs.
** The RRP price shown excludes First Registration charges and Vehicle Excise Duty.