Yamaha YZ 450 F 2019 — Specifications

Imagine yourself at the starting line of a grand prix, helmet fastened, your gaze fixed on the first rise. Beneath you, a battle-ready machine, fine and responsive, poised to unleash its 55 horsepower in a clatter of chain. This isn't a picture postcard; it's the daily reality offered by the Yamaha YZ 450 F, a machine that, since its major overhaul in 2018, has definitively relegated the kick starter to the archives of memories. Here, we're talking about a true racing beast, but with the conveniences of the century, starting with an electric starter that changes your life when you're lying in the mud.

At the heart of the matter is this 449.7 cm³ single-cylinder engine with a reverse cylinder head. It is placed with watchmaker's precision in an aluminum semi-double cradle frame, to seek the perfect center of gravity. The philosophy is clear: everything must serve agility and feel. With an announced weight of 112 kg fully fueled, this Yamaha YZ 450 F sits in the lower-middle range of the category, a significant advantage when you need to shake it in the chicanes. The KYB inverted fork and the single shock absorber, with their generous travel, are there to swallow the terrain, not to be decorative. But the real revolution is in your pocket. The Power Tuner application, a worldwide exclusive at the time, transforms your smartphone into a tuning box. Injection mapping, ignition timing – everything is adjustable wirelessly. It's a formidable tool for the serious rider who wants to adapt the beast to the track of the day, even if a beginner risks getting lost in the intricacies of the settings.

Just who is it aimed at? Clearly not the Sunday stroller. The 965 mm high seat, the 6.2-liter tank designed for body slalom, and a power always ready to be unleashed, make it a weapon for the seasoned motocross rider. The competition, with KTM or Husqvarna, often offers even more vigorous engines. The YZ focuses instead on a more linear character, a better-distributed power that inspires confidence to open the throttle early on corner exits. That's its bet. On the track, the compact chassis offers dreamlike maneuverability, and the braking, with its 270 mm front disc, is up to the fury of the engine.

So, what is it worth today? The price of the new Yamaha YZ 450 F 2019 was €9199. A significant investment, but consistent for a technically accomplished machine. If you are looking for a used cross bike, the 2015, 2016 or 2017 editions will obviously be more affordable, but you will miss out on the app and the electric starter. For 2024 or 2025, prices have naturally risen, reflecting constant developments. It is a demanding machine that rewards technique and commitment. It doesn't forgive much, but it gives everything. In the hands of a track rider who knows how to communicate with it, via the screen of their phone or the pressure of their knees, it becomes much more than a motorcycle: an instinctive extension, a ground rocket.