Key performance

15 ch
Power
🔧
125 cc
Displacement
⚖️
140 kg
Weight
🏎️
110 km/h
Top speed
💺
815 mm
Seat height
11.0 L
Fuel capacity
💰
5 199 €
New price
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Technical specifications

Engine

Displacement
125 cc
Power
15.0 ch @ 10000 tr/min (11.0 kW)
Torque
11.5 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
Starter
électrique
Euro standard
Euro 5+

Chassis

Frame
type Deltabox en acier
Gearbox
boîte à 6 rapports
Final drive
Chaîne
Front suspension
Fourche téléhydraulique inversée Ø 37 mm, déb : 130 mm
Rear suspension
Mono-amortisseur, déb : 110 mm

Brakes

Front brakes
Freinage 1 disque Ø 267 mm, étrier 2 pistons
Rear brakes
Freinage 1 disque Ø 220 mm, étrier simple piston
Front tyre
110/70-17
Front tyre pressure
1.80 bar
Rear tyre
140/70-17
Rear tyre pressure
2.25 bar

Dimensions

Seat height
815.00 mm
Seat type
Selle biplaces
Fuel capacity
11.00 L
Weight
140.00 kg
New price
5 199 €

Overview

The youngest of the XSR models underwent Euro5+ updates in 2025, accompanied by new color schemes. This charming little machine (see the motorcycle review) intends to continue capitalizing on its appeal. With its XSR models, Yamaha introduced two new ideas to its range. First, the “Faster Sons” family, its nostalgico-authentic label for neo-retro models. Second, a glimpse of a gateway to customization, with the extravagant Yard Built as examples.

Unlike Kawasaki and its Z900 RS, Triumph and its Bonneville, or Suzuki with the Katana, Yamaha didn’t want a “revival,” letting the past have only an infusion of influence. At Iwata, they preferred inspiration rather than reinterpretation. This resulted in the XSR 700 for enthusiasts in the mid-range, and the XSR 900 for the more experienced. But what did we have in the small displacement category to experience the “Faster Son”? Nothing, until the arrival of this XSR 125.

It’s working on its appearance, this mini-XSR. With its round (LED) headlights, simplified lines on the fuel tank, panels under the seat, and small perforated aluminum inserts, the transfer of attributes from the 900 is blatant to be flattering. The little one even recovered the boxes with a very questionable placement on the sides of the frame. It emphasizes the vintage side with a “Tuck & Roll” stepped seat, acidic or dark colors, and tires with large knobs giving it a touch of “city trail and urban beach.” Quite the opposite of an MT-125, which is much more angular and sharp. It’s difficult to establish a family resemblance – yet, the XSR is essentially based on the MT, as are the larger models.

To create it, Yamaha has therefore applied a specific bodywork to the youngest of the Masters of Torque. The motorcycle is thus composed of the same perimeter steel frame, as well as the same chassis assembly, swingarm, wheels and engine. With a few small differences less obvious than the design. An inverted fork for each model, but the XSR’s is less thick (37 mm instead of 41 mm). The handlebar is higher for a more relaxed riding position, the front tire is wider (+ 10 mm), the front brake disc is smaller (267 mm instead of 292 mm), and the machine weighs 2 kilos less. So, what engine do we have to push these 140 kilos? The large XSR has a 3-cylinder engine; the mid-size has a 2-cylinder engine; the 125 is equipped with a single-cylinder engine. A certain mechanical hierarchy has naturally emerged, along with the level of displacement and performance. The engine doesn’t have the age of the XS models whose Faster Sons echo, since it comes directly from the MT-125 and YZF-R 125. It is equipped with 4 valves, injection, liquid cooling, sends its 15 horsepower at 10,000 rpm and distinguishes itself from the competition by its variable VVA valve timing. It optimizes the position of the valves according to the engine speed to favor torque. Due to its displacement, there’s just a little over 1 mkg. But it is better distributed with the VVA.

Temporal charm, presence, for a pose very different from that of manga motorcycles. The Yamaha XSR 125 also has aluminum supports for the front mudguard to stand out, a chrome badge with its name in the headlight and a round instrument panel with a digital display. Apparently minimalist but covering the essentials. You constantly have in view the engine speed, the speed, the gear engaged, the fuel level and the average consumption. This is a serious competitor to the Honda CB 125 R. Especially since the 1/8-liter range of Yam covers 3 favorites: sport - vindictive urban - vintage-style. This nod to Yamaha’s history directly targets the city and its classic-style pop culture.

M.B - Photos manufacturer

Standard equipment

  • Assistance au freinage : ABS
  • Indicateur de vitesse engagée

Practical info

  • La moto est accessible aux permis : A, A1, A2
  • Pays de fabrication : France

Indicators & positioning

Weight-to-power ratio
0.11 ch/kg
🔄
Torque / weight
0.08 Nm/kg
🔧
Volumetric power
118.7 ch/L
In category Naked bike · 62-249cc displacement (782 motorcycles compared)
Power 15 ch Top 45%
9 ch median 15 ch 30 ch
Weight 140 kg Lighter than 45%
105 kg median 137 kg 168 kg
P/W ratio 0.11 ch/kg Top 55%
0.08 median 0.11 0.19 ch/kg

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