Yamaha took the championship winning YZ450F and made it even better—more powerful, lighter, slimmer, with enhanced overall stability and more agility than ever! Because the best don’t rest. - The Yamaha 2025 YZ450F

Our 2025 test bike weighs in at 232 pounds without fuel, which positions it as the lightest Japanese 450 and only 3 pounds heavier than the Husqvarna FC450 we tested last month. There’s no question that the Yamaha 450 makes plenty of power. Its real strength is its ability to morph into multiple personalities at the owner’s bidding.

2024年8月13日 · A fuel-injected liquid-cooled DOHC four-stroke 450cc engine is the heart of the YZ450F. Bore and stroke returns with 97.0 x 60.8mm dimensions, as does the 13.0:1 compression ratio.

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. It’s no secret that 450cc motocross bikes have more than enough power...

Featuring a reversed cylinder head layout, forged aluminium 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 …

2025年3月21日 · Powerful 450cc Four-Stroke Engine 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.

2025年3月21日 · 450cc engine is lighter and more compact with increased power across the entire rev range, while increasing the rev limit by 500 rpm for even more top-end power. A completely redesigned aluminum bilateral beam frame provides just the right amount of strength and flex for the perfect balance of stability and cornering performance

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...

2024年9月2日 · The latest YZ450F features a new rear shock linkage and updated suspension settings front and rear. The forward engine mounts are also different, returning to a one-piece design instead of the two thinner pieces used in the previous two years.

This is the lightest, slimmest, sharpest and fastest 450cc motocross bike ever built by Yamaha. Its winning potential in MXGP and SX show just how good this bike is.