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Key Features

Features Gallery
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    New 125cc engine with VVA system

    The new R125 engine uses an innovative new Variable Valve Actuation system that optimizes the valve position for higher levels of low rpm torque and stronger high rpm power – and also improves fuel efficiency. A wider diameter throttle body gives a smoother and more controllable throttle feel – and the new exhaust system produces a sporty and emotive sound.

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    Improved combustion efficiency

    To achieve higher levels of intake efficiency the R125s new engine is equipped with larger intake and exhaust valves as well as a more compact combustion chamber. Combined with the high-tech VVA – as well as the larger throttle body and new exhaust system – this configuration offers more performance from a stand still through to top speed.

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    Refined Deltabox frame

    The R125 is known as one of the best-handling bikes in its category, and for even smoother and lighter handling – with improved high speed comfort – the refined Deltabox frame uses optimized front and rear geometry. Equipped with a new shorter aluminium swingarm and 41mm upside down forks, the new R125 brings you the ultimate 125 supersport specification.

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    Newly designed aluminium swingarm

    Yamaha R-Series models are designed to give you the ultimate in style, performance and technology, and to underline its position as the premium 125 supersport, the new R125 features a new aluminium swingarm. Manufactured using Yamaha’s advanced casting technology, its shorter dimensions, low weight and optimized rigidity deliver sporty handling performance.

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    Improved A&S (Assist & Slipper) clutch

    To help you take full advantage of the increased engine performance, the new R125 is equipped with an improved A&S clutch that gives a lighter feel at the lever for more precise operation and increased controllability. The new design ensures smooth and efficient acceleration; and during deceleration the A&S clutch helps to prevent rear wheel lock ups.

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    New R-Series LED twin-eye body design

    Inspired by the iconic R1, the confident and aggressively styled face features twin-eye LED headlights that reinforce the R-Series family connection. Its M1 MotoGP style front fairing underlines the race-bred specification, and with a 12 LED taillight and premium finish, there’s no mistaking the pure R-Series DNA in the R125’s stunning new bodywork.

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    Newly designed 11-litre fuel tank

    The R125’s aggressive race-bred bodywork is complemented by a newly designed fuel tank that emphasizes the bike’s pure supersport pedigree. Consisting of a steel inner tank protected by lightweight close-fitting external covers with a high quality finish, the new 11-litre tank is designed to be easily removed for routine maintenance.

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    MotoGP-inspired YZR-M1 type cockpit

    Everything about the new R125 is designed to give the ultimate sporty experience. Inspired by Yamaha’s MotoGP bike, the racy cockpit features a new high quality handlebar crown as well as a high-visibility LED instrument panel and brake lever protector that put you in total control on the track and on the street.

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    New high-visibility LCD instruments

    When you turn on the new R125 you’ll be greeted with a personal greeting from the high-tech instruments – and once you’re moving the new multi-function display gives you information on gear position and shift timing, as well as a VVA indicator. Housed in a stylish and sporty panel, these high-visibility instruments keep you informed.

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    Sporty and comfortable riding position

    As well as its new race-bred YZR-M1 style cockpit, the R125 is also equipped with a newly designed rider and passenger seat featuring a revised shape and thicker foam for increased comfort. WIth an optimized handlebar position and new aluminium rearset footrests, the refined ergonomics give a balanced riding experience that's both sporty and comfortable.

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    Wider 140-section rear tyre

    For 2019 the new R125 runs with a new wider 140/70-17 rear tyre that gives improved stability and better handling. Offering a good balance of grip and durability, this supersport style tyre is designed to enable you to optimize the potential of the new engine’s wider spread of power, and its wide-section accentuates the bike’s aggressive R-Series stance.

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    Refined and improved braking feeling

    Equipped with a large diameter 292mm front disc and a 230mm rear disc, the R125 is built to give you outstanding braking performance – and for 2019 this state-of-the-art braking system benefits from a revised brake hose layout and a new rear caliper that contribute towards a better brake feel for precise and accurate control.

Technical Specifications

Download Factsheet
  • Engine
    Engine type
    Liquid-cooled, 4-stroke, SOHC, 4-valves
    Bore x stroke
    52.0 mm x 58.7 mm
    Compression ratio
    11.2 : 1
    Maximum power
    11.0kW (15.0PS) @ 10,000 rpm
    Maximum Torque
    11.5Nm (1.16kg-m) @ 8,000 rpm
    Lubrication system
    Wet sump
    Clutch Type
    Wet, multiple-disc coil spring
    Ignition system
    TCI (digital)
    Starter system
    Transmission system
    Constant Mesh, 6-speed
    Final transmission
    Fuel consumption
    CO2 emission
    Electronic Fuel Injection
  • Chassis
    Steel Deltabox
    Caster Angle
    Front suspension system
    Upside-down telescopic fork, Ø41 mm
    Rear suspension system
    Swingarm, (Link type suspension)
    Front travel
    130 mm
    Rear Travel
    114 mm
    Front brake
    Hydraulic single disc, Ø292 mm
    Rear brake
    Hydraulic single disc, Ø220 mm
    Front tyre
    100/80-17 M/C
    Rear tyre
    140/70-17 M/C
  • Dimensions
    Overall length
    1,990 mm
    Overall width
    755 mm
    Overall height
    1,140 mm
    Seat height
    820 mm
    Wheel base
    1,325 mm
    Minimum ground clearance
    160 mm
    Wet weight (including full oil and fuel tank)
    142 kg
    Fuel tank capacity
    Oil tank capacity