the lightweight king of the streets GSX-S125 £4,199 RRP**
A True Streetbike
Meet the lightweight king of the streets, the Suzuki GSX-S125. It has the best power-to-weight ratio and acceleration in the 125cc street sport class.

-
15
Power (ps)
-
124.4
Engine (cc)
-
133
Weight (kg)
-
122.82
MPG*
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 | 133.0kg (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* | 122.82 | CO2 | 54g/km |
Power | 11.0 kW @ 10000rpm (15PS) | Torque | 11.50Nm @ 8000rpm (8.48lb.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.
New GSX-S Engine
There is a science to building high-performance engines and the GSX-S125's single cylinder, liquid cooled, DOHC (Double Over Head Cam) is a perfect example of how to make a lot of power out of a very efficient and compact power plant. This power combines with strong torque and exceptional fuel economy, to create an engine worthy of the GSX-S marque, it powers the GSX-S to great performance on the streets and a lot more.

All New Chassis
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.

Advanced Rider Technology
The GSX-S125 features some of our most advanced rider technology, including a shutter-key lock system and Suzuki Easy Start System.
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
Enhance the sporty style of your GSX-S. Makes it a real single seater. Cover colour-keyed to machine.
Tank Bag (Small)
5 litre capacity extending to 9 litres. Used with Tank Ring Fixation 990D0-04105-000
Tank Pad Protector
Protects your tank from scuffs and marks. 3pc Set.
Heel Plate Protection Set
Protects heel plate from boot scuff marks.
Street Accessory Pack
- Rear Seat Tail Cover
- Tank Bag Small (Including Fixation Ring)
- Tank Pad Protector
- 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
5 litres capacity extending to 9 litres. Rain cover & shoulder belt included. Must be used with Tank Bag 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

YOUR SUZUKI EXTRAS INCLUDED AS STANDARD
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!
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.
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. |
![]() Warranty extension only applies to such motorcycles which are regularly serviced through a UK Authorised Suzuki Dealer, in accordance with the schedule in the Owner’s Manual; and in the UK only, for one year commencing from expiry of the normal Two-Year Suzuki Warranty, and only for motorcycles which are kept in the UK during the Warranty extension period; 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. |
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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. |