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A True Sportsbike

A True Sportsbike

GSX-R125, the best power-to-weight ratio, torque-to-weight ratio and acceleration, plus nimble handling and great fuel economy in the 125cc class.

  • 15

    Power (ps)

  • 124

    Engine (cc)

  • 134

    Weight (kg)

  • 122.82

    MPG*
Overall length 2000 mm (78.7 in) Overall width 700 mm (27.56 in)
Overall height 1070 mm (42.1 in) Wheelbase 1300 mm (51.2 in)
Ground clearance 155 mm (6.1 in) Seat height 785 mm (30.9 in)
Kerb mass 134 kg (295 lbs) Fuel capacity 11.0 L (2.4 UK gallons)
Engine capacity 124 cc Engine 4-stroke, 1-cylinder, liquid-cooled, DOHC
Bore 62.0 mm x 41.2 mm (2.4 in x 1.6 in) 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 54 g/km
Power 11.0 kW @ 10,000rpm (15 PS) Torque 11.5 Nm @ 8,000rpm (8.48 lb. 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, tubeless Rear tyres 130/70-17M/C, tubeless

GSX-R to revolutionise the 125cc class

The Suzuki GSX-R line has defined sportbike performance for over 30 years, with more than a million sold worldwide. So the dedicated Suzuki engineers who have devoted their lives to the GSX-R take their responsibilities very seriously. Meet the revolutionary Suzuki GSX-R125, with the best power-to-weight ratio and acceleration in the 125cc class.

New GSX-R Engine

There is a science to building high-performance engines and the GSX-R125’s DOHC engine 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-R marque. 

Sporty Engine

High Horsepower and Generous Torque

Advanced Electronic Fuel Injection

THE FASTEST 125CC IN THE MCN GROUP TEST

Motorcycle News took six of the best sporty 125s for a two-day thrash to find the perfect L-plate thriller. The GSX-R125 topped MCN's speed chart with a speedometer reading of 72.75mph and also topped their track day table making it the most fun 125cc bike to ride.

Lightweight Chassis

At 134kg ready to ride, the GSX-R125 is light and compact, giving ultimate control in the corners for a fun and sporty ride. Low weight is key, this helps deliver a bike with responsive and rewarding handling for added confidence on the street and low lap times on the track.

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-R’s great sportsbike looks, along with the sporty petal type brake discs front and rear.

Lightweight ABS

The Anti-lock Brake System¹ (ABS) is the latest Bosch ABS 10 base unit, which is the lightest and most compact two-channel ABS system on the market. The pro-active system monitors wheel speed and immediately intervenes when imminent wheel lock is detected-before actual lock-up. The compact ABS system as installed on the GSX-R125 weighs just 0.59 kilograms.

Advanced Rider Technology

The GSX-R125 features some of our most advanced rider technology, including our all new key-less ignition system, and Suzuki Easy Start System.

Key-less Ignition System

Suzuki Easy Start System

Aerodynamic bodywork

To make the best use of every ounce of power from the GSX-R125’s class leading engine, the bikes sporty bodywork is also extremely aerodynamically efficient to reduce drag and maximise efficient speed. This design is the result of extensive wind tunnel development, and the sleek bodywork also enhances the GSX-R125’s easy handling character. Furthermore, it also has the smallest projected frontal area in the 125cc class helping to achieve that best in class acceleration and supports high levels of fuel efficiency.

LED Lighting

Reflecting its GSX-R heritage, the GSX-R125 features vertically stacked LED headlights, with the low beam above the high beam, and position lights on each side of the headlight. The GSX-R125’s LED headlights are bright and compact, lighter and longer lasting compared to conventional halogen-bulb headlights seen on competing machines. Because LED headlights use about 15% of the electrical power required by conventional bulbs, less engine power is needed to run the motorcycle’s alternator, improving acceleration and fuel economy. The LED license plate light on the rear fender is light and compact and much more durable and vibration resistant than the conventional bulb lights installed on competing 125cc machines.

LCD Instrument Cluster

The Suzuki GSX-R125 has a full LCD instrument panel set in a modern dashboard, framed by turn signal, neutral, high beam, coolant temperature, malfunction indicator lamp (MIL), ABS, and programmable engine-RPM indicator lights. The bright LCD panel includes a segmented-bar tachometer across the top; a digital speedometer; a gear position indicator; a digital clock; a digital odometer with dual trip meters; an average fuel consumption meter; a fuel gauge; and an oil change timing indicator.

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GSX-R125 Accessories

Price includes VAT & Fitting

Rear Seat Tail Cover Double Bubble Windscreen Tank Pad Protector Heel Plate Protection Set

Sports Accessory Pack

£235 Customer saving £65! (Dealer Info: Promo code 5122 (YSF), 5120 (291), 5121 (YUH), fitting time 1 hr)
  1. Rear Seat Tail Cover
  2. Double Bubble Windscreen
  3. Tank Pad Protector
  4. Heel Plate Protection Set

GSX-R125 Accessories

Double Bubble Windshield (Clear)

Adds more style & aerodynamics to your GSX-R. Higher bubble +10cm. Part No. 990D0-23K50-CLE

£90.00

Price includes VAT but excludes fitting

Double Bubble Windshield (Smoked Tint)

Adds more style & aerodynamics to your GSX-R. Higher bubble +10cm. Part No. 990D0-23K50-SMO

£95.00

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

£85.00

Price includes VAT but excludes fitting

Rear Seat Tail Cover (White)

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

£88.00

Price includes VAT but excludes fitting

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

£80.00

Price includes VAT but excludes fitting

Graphics Kit

Cowling & Fork Stickers. 4pc Set. Part No. 990D0-23K07-GRY

£160.00

Price includes VAT but excludes fitting

Rear Wheel Service Stand

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

£90.00

Price includes VAT but excludes fitting

Tank Pad Protector (Black/Carbon)

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

£26.00

Price includes VAT but excludes fitting

Tank Pad Protector (Black)

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

£26.00

Price includes VAT but excludes fitting

Fuel Cap Protection Trim

Protects your fuel tank from scuffs and marks. Part No. 990D0-23K04-CRB (Carbon Look)

£15.00

Price includes VAT but excludes fitting

Fuel Cap Protection Trim (Black)

Protects your fuel tank from scuffs and marks. Part No. 990D0-23K04-BLK (Piano Black)

£15.00

Price includes VAT but excludes fitting

Heel Plate Protection Set

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

£25.00

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

£100.00

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

£38.00

Price includes VAT but excludes fitting

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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 01-01-2016 and 31-12-2020 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:
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.
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.
   

125cc acceleration test video - supporting information

The 125cc acceleration test video appearing on Suzuki Bikes UK Facebook page https://www.facebook.com/SuzukiBikesUK/videos/1740999589313025/ was produced on 21st May 2018 at Bruntingthorpe Proving Ground with professional riders in controlled conditions. The acceleration tests were carried out independently by Straightliners - UKTA (https://straightlinersonline.co.uk/) and they confirmed the timing and speed information as follows:

Model 60ft time ¼ mile time ¼ mile speed
Suzuki GSX-R125 2.41s 19.13s 64.8mph
Yamaha YZF-R125 2.50s 19.35s 63.7mph
KTM RC125 2.51s 19.36s 64.6mph
Honda CBR125R 2.47s 19.40s 63.7mph

The models used for the acceleration test were 2017 Suzuki GSX-R125, 2013 Yamaha YZF-R125, 2017 KTM RC125, 2017 Honda CBR125R.