Featuring a reversed cylinder head layout, forged aluminum piston, 39 mm titanium valves, lightened crank assembly and dry sump lubrication, the 2025 YZ450F's advanced DOHC four-stroke engine is light, compact and world renowned for its incredibly broad pulling power across the entire rev range.

The Yamaha YZ450F was the subject of a mega redesign in 2023. The engine and chassis were revised, and the bottom line was a much lighter, more agile machine. The broad concepts remained intact; the motor retained its reverse, rearwardtilting cylinder head, and the chassis was once again wrapped around that design with a high-boy airbox and mid ...

Based on the benchmark-setting YZ450F motocrosser, the YZ450FX is designed to dominate cross country competition. Its lightweight, compact chassis, powerful four-stroke engine, exceptional rider ergonomics, and Yamaha's groundbreaking next-generation Power Tuner app all carry over directly from the class-leading YZ450F.

2024年8月14日 · Model year 2025 brings a revised YZ450F into the fold. With key updates to an already-top-of-the-line suspension package, linkage changes, and durability refinements, Yamaha intends to retain the...

Featuring a reversed cylinder head layout, forged aluminum piston, titanium valves, lightened crank assembly and dry sump lubrication, the YZ450F's advanced DOHC four-stroke engine is light, compact and world renowned for its incredibly …

2024年9月28日 · How Much Power Does the 2025 Yamaha YZ450F Make? Dyno testing Yamaha’s 450cc motocross bike for horsepower and torque.

2025年3月21日 · The Ultimate Open Class YZ. The ultimate 450 raises the bar even higher. Building on its best-in-class performance, the 2025 YZ450F boasts exceptional power and sharp handling in a compact, lightweight package that makes fast riders even faster. Powerful 450cc Four-Stroke Engine

We focus on the new 2025 Yamaha YZ450F, the SML bike of the year, and get each test rider's feedback on the machine.

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Known for its powerful performance, cutting-edge technology, and ergonomic design, Yamaha’s latest YZ450F sets a new benchmark for motocross bikes. This review breaks down what you need to know about the YZ450F, from its powertrain and design to handling, technology, and target audience.