Yamaha YZ125 2015 — Specifications

Can the two-stroke legend still hold its own against the era of overpowered four-strokes? Ask a teenager starting out in competition, and he will point you without hesitation towards the Yamaha YZ125. In 2015, Yamaha gave this icon a serious makeover, proving that the heart of a well-bred two-stroke remains an incredibly effective training and performance tool. With its 40 horsepower scraping 30 kW for only 95 kilos all fueled up, this machine is not a motorcycle, it’s a catapult. It propels the rider with a violence that only a two-stroke single-cylinder can offer, a school of rigor and engine speed management unmatched.

The philosophy is clear: this Yamaha YZ125 dirt bike is a pure competition weapon, designed to dominate motocross circuits. The aluminum frame and fully adjustable suspensions, inherited from the YZ-F four-stroke models, offer a chassis of surgical precision. Compared to a KTM 125 SX, it may seem a bit more conventional in its approach, but its balance and ease of inspiring confidence are its master assets. It’s the ideal mount for climbing the ranks, before potentially jumping on a 250F. And to answer a frequent question, no, the Yamaha YZ125 is not automatic; its close-ratio six-speed gearbox requires an active hand on the lever.

Beyond the mechanics, Yamaha has taken care of the image. The redesigned bodywork and Speed Block graphics give it a factory look, an aggressive silhouette that doesn’t go unnoticed. This attention to detail, down to the wide YZ-F style footpegs, shows a willingness to fully integrate this two-stroke into the modern range. For those aiming for the top, the partnership with YRRD (Yamaha Rinaldi R&D) offers a catalog of racing parts, such as a titanium silencer or a specific CDI, to transform the stock beast into a true missile. Purists looking for original parts for older models, such as a 1982 Yamaha YZ125, know that this performance ecosystem exists.

So, what is the price of this school of riding on wheels? In 2015, it was listed at 6899 euros. For a current new machine, you need to consult the current rates; ask yourself what the price of a 2024 or 2025 Yamaha YZ125 is, as it changes every year. For a used model, such as a 1990 or 1993, you can generally expect to pay around $2,700 for a Yamaha YZ125 in good condition, but it all depends on the history and modifications. Advice: if you are aiming for road homologation, inquire because it is rarely standard. This YZ125 is a concentrated dose of nervousness, a demanding toy that rewards technique. It is not made for leisurely rides, but for biting into the earth of circuits and forging the champions of tomorrow.