1998年3月1日 · The YZ400F is in a class of its own; it relegates pretty much every other off-road Thumper to farm-implement status. The YZF’s level of refinement makes even the trickest Euro-Thumpers feel like...

Gary Jones took a prototype YZ to third in the 500 standings and won the 250 title. In 1972, a dedicated series for the U.S. championship was created, with eight races starting in Georgia and ending in Alabama. Jones won the 250 title and was second in the 500s to Brad Lackey.

2011年7月20日 · This is my look back at the history of Yamaha's Open class four-strokes from 1998 through 2022.

This 1979 Yamaha YZ400F was acquired by the seller in 2023 following reported refurbishment work under previous ownership that involved powder-coating the frame in black, overhauling the 396cc two-stroke single, re-jetting the Mikuni carburetor, re-upholstering the seat, and replacing the drive chain, grips, fork seals, tires, bearings, fenders,...

2005年11月1日 · Yamaha built the YZ 400 engine based on computer modeling studies. It shares little, if anything, with its ancestors. Power is generated in the ceramic composite plated cylinder via 5 valves:...

2012年4月1日 · For starters, the stock engine pumps out 42 horses and does it with a red line at 11,200 rpms. A stock YZ250 puts 43 ponies to the ground but signs off before 9,000. The 400F also has almost non-existent engine braking.

1997年9月1日 · Yamaha’s got one and it’s as serious as a 90-foot triple-jump. It’s the YZ400F,4 available in dealerships this December. A full-blown 400cc four-stroke racebike may be shocking news, especially...

2019年12月6日 · The Yamaha YZ400F was a true game-changer, the first 4-stroke production motocrosser that could compete directly against the 2-stroke competition — and win. The YZF weighed 250 pounds — about 20 more than the 2-strokes — but had comparable power and torque, along with the added advantage of heavier engine-braking.

2020年12月10日 · This is the spot to talk about the Yamaha YZ400F, YZ426F, YZ450F, & YZ450FX. Find new & used YZ400F, YZ426F & YZ450F/FX motorcycles & parts for sale, motorcycle reviews, and browse owner garages & mods. Common Threads: Look here 1st! Mods, Maintenance, Common Issues and FAQ's. Best option for headlight when going trail riding?

2021年8月19日 · Read and compare owner reviews & ratings of Yamaha YZ400F 1999. Vehicle specs, photos & video, pricing, and more!