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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
Technical SpecificationsDownload Factsheet
- 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
- 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
- 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