sinnis gpx 125

The supersport

The 2022 Sinnis GPX 125 takes its spot on the starting grid, poised for the lights to go out. Are you ready to feel like a true racer and be introduced to the excitement, adrenaline and performance of supersports bike riding?

£3299 + OTR

power & control

The lightweight 125cc liquid-cooled engine is built to deliver smooth, progressive power and torque, allowing you to deliver lap after lap without fatigue, cutting away tenths at a time. Developed over the last 3-years the engine mapping has been finely balanced to allow both low speed control when in the city and dynamic throttle response when pushing the pace.

gpx dash


The GPX features a digital instrument panel with crisp illumination of only the most important data to help you conquer any road or circuit, day or night. Glove friendly touch buttons allow you to quickly make changes to the display information on the fly whether tucked in or riding the cool down lap.


Everything about the GPXs bodywork has been designed and refined to deliver both class-leading aerodynamics as well as a truly race inspired style. The ergonomic triangle of handlebars-seat-footpegs has been optimised to suit both taller and shorter riders, offering a riding position which is equally as comfortable as it is commanding. The tubular steel frame paired with upside-down front suspension & linkage-driven rear mono-shock keeps the handling light and predictable as well as offering superb high-speed comfort. The consequence? Less fatigue, faster laps.

gpx lights

light up the road

The powerful LED headlights have been moved down into the side pods of the fairing to de-clutter the front of the bike and give a full-on race vibe. The LED running lights focus the front end, while the integrated tail-light will give your rivals something to watch as you clip the apex and head towards the podium.



Full Specs


Engine Type: Liquid Cooled, Euro5, DOHC, 4-Stroke, 4-Valve

Displacement: 124.2cm3

Bore x Stroke: 58mm x 47mm

Compression Ratio: 12:1

Maximum Power: 9.5kW @ 9500rpm (approx. 12.7bhp)

Maximum Torque: 10.67Nm @ 7500rpm

Lubrication System: Wet Sump

Clutch Type: Wet, Multi-Disc, Coil Spring

Ignition System: ECU Controlled

Starter System: Electric

Transmission System: 6-Speed

Final Transmission: Chain

Fuel Consumption: 3.01l per 100km

CO2 Emissions: 68g/km

Fuel System: ECU Controlled Fuel Injection

Brakes & Wheels

Frame: Tubular Steel

Steering Angle: 25 Degrees

Front Suspension: Upside-down Telescopic Fork, Dia.48mm

Rear Suspension: Swingarm, Link-Actuated Mono-Shock Absorber

Front Brake: Hydraulic Single Disc, Dia.276mm

Rear Brake: Combined Braking System, Hydraulic Single Disc, Dia.220mm

Front Tyre: 100/80-17

Rear Tyre: 140/70-17


Overall Length: 2020mm

Overall Width: 747mm

Overall Height: 1140mm

Seat Height: 816mm

Wheelbase: 1350mm

Weight: 158kg

Fuel Tank Capacity: 12 Litres

Oil Capacity: 1 Litre

Colour Options

Carbon Black

Ultimate Grey


Total of 2 Year Warranty Covering Parts, Labour & Breakdown.

Year 1: Parts, Labour & Breakdown (L&B in Partnership with The Motoring Organisation®)

Year 2: Parts Only

Sinnis GPX 125cc

The Sinnis GPX 125cc is ready to introduce you to the excitement, adrenalin and performance of riding, both on the street and on the track.

Product SKU: GPX 125cc Motorcycle

Product Brand: Sinnis

Product Currency: GBP

Product Price: 3299

Product In Stock: InStock

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