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 …

1998年3月1日 · Its Keihin 39mm pumper carb is jetted spot-on, the slightest twist of the throttle producing instantaneous revs and an authoritative bark through the muffler. The sound alone …

2005年11月1日 · The new YZ 4-stroke engine is designed to run on 92 octane gasoline. This unusual stoichiometric accomplishment is achieved by employing a very unique carburetor …

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 …

2019年6月21日 · We test these small-displacement sportbikes, the 2019 Yamaha YZF-R3 and Kawasaki Ninja 400, at Chuckwalla Valley Raceway and on the street. Which wins?

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 …

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 …

As development for the YZM400F factory machine steadily progressed, the develop of the YZ400F production model was already underway. With the success of the YZM400F, Project …

2005年11月1日 · We suspect that the YZ-400F would benefit from a bit more flywheel mass and a change in the electronic ignition to allow the engine compression to become a factor in …

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, …