Yamaha R125 2023 — Specifications

Who would have thought that a 125cc motorcycle could one day come equipped with traction control and a TFT screen larger than that of an R1? Yet that's the gamble Yamaha has taken with the 2023 R125, the fourth generation of a sportbike that categorically refuses to behave like a small-displacement machine. Since the first 2008 Yamaha YZF-R125, the lineage has constantly evolved, passing through the 2010, 2013, 2015, 2016, 2018, 2019, and 2021 model years, each version gaining in maturity. This 2023 vintage pushes the envelope so far that you have to wonder whether Yamaha accidentally swapped the spec sheet of a supersport with that of a quarter-liter.

On the design front, the Yamaha R125 has undergone a near-complete overhaul. Only the wheels survive the generational change. The headlights have been sharpened to recall the piercing gaze of the R7, the fairings adopt more taut lines, and the tail section widens. The 11-liter tank takes on new shapes, and even the passenger footpegs get a redesign. Whether the bike is delivered in black or another colorway, the visual result fools no one: you're looking at a miniature sportbike that wants to play in the big leagues. The resemblance to the elder sisters in the R range is striking — perhaps even a bit too brazen for a machine capped at 15 horsepower.

The dashboard concentrates a good chunk of the revolution. A 5-inch color TFT screen, connected via Bluetooth to the Yamaha app, offers two display modes. The first, road-oriented, stays clean with speed and a conventional tachometer. The second switches to track mode with a lap timer, a configurable rpm bar graph, and memory for 25 laps. For a machine whose top speed peaks at 125 km/h, this level of equipment may seem disproportionate. Add to that pre-wiring for a quickshifter and a deactivatable traction control system as standard, and the question genuinely arises: who is going to break the rear loose on a 125 running Michelin Pilot Street tires? The 124.7cc liquid-cooled single-cylinder four-stroke, with its VVA variable intake system and four valves, delivers 15 hp at 10,000 rpm and 11.4 Nm at 8,000 rpm. It's one of the best engines in the segment — lively and well-filled in the midrange — but it's still 15 horsepower. The traction control is more of a marketing argument than a mechanical necessity.

Beneath the flashy bodywork, the rolling chassis inspires far more confidence than the list of gimmicky features. The Deltabox steel frame is a benchmark in the category. The 41mm inverted fork offers 130mm of travel, while the rear monoshock provides 110mm. Braking relies on a 292mm radially mounted front disc with a two-piston caliper, paired with a 230mm rear disc. The whole package weighs 144 kg wet, on 100/80-17 and 140/70-17 tires. The wheelbase, shortened by 30mm compared to the previous version, promises a welcome gain in agility. The slipper clutch and aluminum swingarm round out a solid, reassuring chassis package — ideal for an A1 license holder or a young rider discovering sportbikes. On the other hand, the seat perched at 825mm and the 6-speed gearbox with no automatic mode serve as a reminder that an automatic Yamaha R125 doesn't exist: here, everything is done by foot and wrist.

Up against an Aprilia RS 125 or a KTM RC 125, the Yamaha R125 at a listed price of €5,999 positions itself at the top of the range. That price tag is justified by the wealth of electronic equipment and the quality of the chassis, but it will put off buyers who are primarily looking to ride without frills. For those watching the used Yamaha R125 market, including in Switzerland, previous generations often offer a more reasonable price-to-fun ratio. This 2023 R125 already hints at what the 2024 Yamaha R125 will be: a small sportbike that does a lot — sometimes too much — but that leaves no one indifferent.