Key performance

15 ch
Power
🔧
125 cc
Displacement
⚖️
142 kg
Weight
🏎️
125 km/h
Top speed
💺
825 mm
Seat height
11.5 L
Fuel capacity
💰
5 499 €
New price
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Technical specifications

Engine

Displacement
125 cc
Power
15.0 ch @ 9000 tr/min (11.0 kW)
Torque
11.4 Nm @ 8000 tr/min
Engine type
Monocylindre, 4 temps
Cooling
liquide
Compression ratio
11.2 : 1
Bore × stroke
52 x 58.6 mm
Valves/cylinder
4
Camshafts
1 ACT
Fuel system
Injection

Chassis

Frame
type Deltabox en acier
Gearbox
boîte à 6 rapports
Final drive
Chaîne
Front suspension
Fourche téléhydraulique inversée Ø 41 mm, déb : 130 mm
Rear suspension
Mono-amortisseur, déb : 114 mm

Brakes

Front brakes
Freinage 1 disque Ø 292 mm, fixation radiale, étrier 2 pistons
Rear brakes
Freinage 1 disque Ø 230 mm, étrier simple piston
Front tyre
100/80-17
Front tyre pressure
1.80 bar
Rear tyre
140/70-17
Rear tyre pressure
2.00 bar

Dimensions

Seat height
825.00 mm
Fuel capacity
11.50 L
Weight
142.00 kg
New price
5 499 €

Overview

Can a 125 really deliver MotoGP thrills? Yamaha seems to believe it wholeheartedly with this YZF-R125 Monster Energy, a small sportbike that isn't afraid to display its ambitions on its flanks. We are well beyond a simple sticker. The machine fully adopts the dark blue and neon green livery of the official M1, with the famous 'M' branded in the Monster Energy style running along the fairing. The mimicry is striking, almost unsettling for a machine intended for the A1 license. For a young budding rider, slipping into this cockpit with a high seat height of 825 mm is a bit like putting on the gloves of Rossi or Vinales, at least in their head.

Yamaha YZF-R 125 Monster Energy MotoGP

Beneath the star makeup, the technology has also evolved. The 125 cm3 single-cylinder engine, which delivers its 15 horsepower at 9000 rpm, now benefits from variable intake. A detail? Not really, it allows to optimize the torque, that famous 11.4 Nm, over a wider range, making the bike more flexible and less tense at high rpm. The Deltabox frame has been revised, the controls refined, and we note racing nods such as the open fork head and lever protection. The 41 mm inverted fork and radial front brake are serious arguments for those who want to get started in sporty riding. At 142 kg fully fueled, it is agile and predictable, a perfect school of precision.

But all this has a price, and it is heavy: 5499 euros. This is the black spot, the big gap that can be off-putting. At this price, we are approaching that of 300 or 400 cm3 roadsters, much more comfortable on open roads and highways. The R125, with its maximum speed limited to 125 km/h, remains a restricted license machine, ideal for dynamic cities and winding country roads. Its direct competitor, the KTM RC 125, offers similar equipment and just as aggressive a style, often at a slightly more contained price. Yamaha is clearly betting on emotion and identification with the MotoGP universe to justify the difference.

Ultimately, this special series is not for everyone. It targets the young racing enthusiast, for whom the aesthetics of a real race bike and the connection with the official team are worth the supplement. It is a desirable object, a motorcycle that is experienced as much with the eyes as with the wrist. It is not the most sensible in the segment, but it is undoubtedly the one that makes you dream the most. A perfect machine to get your hands and eyes used to things, before, perhaps, moving on to a higher displacement.

Standard equipment

  • Assistance au freinage : ABS de série

Practical info

  • La moto est accessible aux permis : A

Indicators & positioning

Weight-to-power ratio
0.10 ch/kg
🔄
Torque / weight
0.08 Nm/kg
🔧
Volumetric power
118.7 ch/L
In category Sport · 62-249cc displacement (1863 motorcycles compared)
Power 15 ch Top 39%
7 ch median 13 ch 31 ch
Weight 142 kg Lighter than 37%
105 kg median 136 kg 172 kg
P/W ratio 0.10 ch/kg Top 55%
0.07 median 0.11 0.25 ch/kg

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