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.

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.

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.

Play Video

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)

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

GSX-R125 Accessories

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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.
	All 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 31-12-2019 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.

Suzuki

An unbeatable package GSX-R125 £4,399

A True Sportsbike

Power (ps)

Engine (cc)

Weight (kg)

MPG*

GSX-R to revolutionise the 125cc class

New GSX-R Engine

THE FASTEST 125CC IN THE MCN GROUP TEST

Lightweight Chassis

Light Aluminium Wheels

Lightweight ABS

Advanced Rider Technology

Aerodynamic bodywork

LED Lighting

LCD Instrument Cluster

GSX-R125 Accessories

Sports Accessory Pack

GSX-R125 Accessories

Double Bubble Windshield (Clear)

Double Bubble Windshield (Smoked Tint)

Rear Seat Tail Cover

Rear Seat Tail Cover (White)

Rear Seat Tail Cover (Blue)

Graphics Kit

Rear Wheel Service Stand

Tank Pad Protector (Black/Carbon)

Tank Pad Protector (Black)

Fuel Cap Protection Trim

Fuel Cap Protection Trim (Black)

Heel Plate Protection Set

Tank Bag Small

Tank Bag Fixation Ring

Finance Calculator

Terms and Conditions

Cookie policy

A True Sportsbike

Power (ps)

Engine (cc)

Weight (kg)

MPG*

GSX-R to revolutionise the 125cc class

Sporty Engine

High Horsepower

Advanced Electronic Fuel Injection

THE FASTEST 125CC IN THE MCN GROUP TEST

Lightweight Chassis

Light Aluminium Wheels

Lightweight ABS

Key-less Ignition System

Suzuki Easy Start System

Aerodynamic bodywork

LED Lighting

LCD Instrument Cluster

GSX-R125 Accessories

Rear Seat Tail Cover

Double Bubble Windscreen

Tank Pad Protector

Heel Plate Protection Set

Sports Accessory Pack

GSX-R125 Accessories

Double Bubble Windshield (Clear)

Double Bubble Windshield (Smoked Tint)

Rear Seat Tail Cover

Rear Seat Tail Cover (White)

Rear Seat Tail Cover (Blue)

Graphics Kit

Rear Wheel Service Stand

Tank Pad Protector (Black/Carbon)

Tank Pad Protector (Black)

Fuel Cap Protection Trim

Fuel Cap Protection Trim (Black)

Heel Plate Protection Set

Tank Bag Small

Tank Bag Fixation Ring

Terms and Conditions