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Yamaha YZ450F


 Yamaha started the modern 4-stroke MX movement with what is now the YZ450F. The Yamaha YZ450F was originally a 400cc and then 426cc before Yamaha bumped the final displacement and created the YZ450F. As the flagship of Yamaha’s YZ-F motocross line, the YZ450 is perhaps the best-known 450 motocross bike today.

Yamaha YZ450F
Catching air on the big thumper is no problem thanks to the YZ's modified 449cc DOHC 4-stroker while landing is smoothed out thanks to Kabayas up front and back.
The Yamaha YZ450F has gone through many refinements which have changed the 450F from a fire-breathing monster into a well-rounded, easy-to-ride favorite in the 450 division. The YZ450 has a stable chassis, supple suspension and smooth motor. One of the most popular features of the YZ450F is the growing reputation of durability. Grant Langston proved that the YZ450 has the longevity to make it through a tough season of racing at the AMA Motocross nationals and the performance to beat all other 450 motocross bikes. The YZ450F claimed the 2008 championship and is consistently in the running for wins at any level of racing.

Yamaha also claimed a Supercross title with the YZ450F in the capable hands of Chad Reed. Now James Stewart is riding the YZ450F and the combination has proven deadly for the competition. Many off-road racers choose the YZ450F to modify to their needs. Yamaha changed the entire dirt bike world when it developed the YZ450F. Even though the competition has started to catch up, the YZ450F was a trendsetter and will continue to be in the future.
Yamaha YZ450F Motorcycle Reviews
Yoshimura Yamaha YZ450F Project Bike
Thursday, November 04, 2010
Yoshimura has long been known for its excellence in the road racing and sportbike scene and now it shows off its prowess in the off-road world tuning our 2010 Yamaha YZ450F project bike.
2011 Yamaha YZ450F First Ride
Wednesday, October 20, 2010
Very little has changed on the 2011 Yamaha YZ450F motocross bike, but we put it through a day of testing at Racetown 395 and Perris Raceway to get reacquainted.
2010 Yamaha YZ450F Comparison
Friday, January 01, 2010
MotoUSA rounds up four of the best open-class motocross bikes on the planet from Honda, Yamaha, Kawasaki and KTM for our 2010 450 Motocross Comparison.
2010 Yamaha YZ450F First Ride
Thursday, October 01, 2009
MotoUSA rips around Budds Creek Motocross Park aboard the 2010 Yamaha YZ450F motorcycle. Discover how this cutting-edge off-road motorcycle performs in this motocross motorcycle first ride review.
2010 Yamaha YZ450F Video Blog
Thursday, September 24, 2009
Motorcycle USA rides the new 2010 Yamaha YZ450F motocross motorycle. Check out our initial impressions in this motorcycle video blog.
2009 Yamaha YZ450F Comparison
Monday, November 24, 2008
Yamaha is the only Japanese OEM not to offer EFI on its flagship motocross bike. However, don't think that necessarily puts the YZ450F at the bottom of the heap.
2009 Yamaha YZ450F First Ride
Thursday, September 04, 2008
Glen Helen is just the type of track for a modern 450 and we were happy to spend a day tossing the 2009 Yamaha YZ450F around the National-caliber track.
2008 Yamaha YZ450F Comparison
Wednesday, April 09, 2008
It took a long time to get dialed in, but the wait was worthwhile after sampling the amazing motorcycles offered in MotoUSA's 2008 450 Motocross Shootout.
2008 Yamaha YZ450F First Ride
Monday, November 19, 2007
Motorcycle USA got a chance to kick up some roost aboard the new and improved 2008 YZ450F dirt bike.
2007 Yamaha YZ450F Comparison
Sunday, February 11, 2007
We set out to discover what another 365 days of Darwinian Theory has done to the latest crop of 450 motocross bikes.
2006 Yamaha YZ450F First Ride
Monday, December 12, 2005
There are some major alterations and changes to the new Yamaha YZ450F that are sure to have an impact on the blue faithful.
2005 Yamaha YZ450F Comparison
Sunday, June 12, 2005
Honda and Yamaha have been on top in the big-bore 4-stroke MX wars of late, but Suzuki joins the party in 2005 with the RM-Z450
2003 Yamaha WR450F vs YZ450F
Friday, April 04, 2003
The WR450F is likely the best trail riding bike ever...or is it?
2003 Yamaha YZ450F Comparison
Friday, February 28, 2003
The 2003 crop of 4-strokes is by far the best set of performance thumpers we've ever test...maybe even the best bikes?
Yamaha YZ450F First Looks
2010 Yamaha YZ450F First Look
Tuesday, September 08, 2009
Yamaha mixes things up with its latest 450 motocrosser, the 2010 Yamaha YZ450F sporting a totally new engine and chassis. Read about the details in the 2010 YZ450F first look report.
2009 Yamaha YZ450F YZ250F First Look
Friday, June 06, 2008
Yamaha unleashes the specs for its 2009 lineup of YZ dirt bikes, featuring the YZ250F and YZ450F motocross racebikes.
2008 Yamaha Off-Road First Look
Friday, June 15, 2007
Big Blue rolls out the 2008 model lineup with relatively minor changes, but a whole new TT-R model.
Yamaha YZ450F Behind the Bike Feature
Behind Chad Reeds YZ450F
Thursday, February 01, 2007
Paul DeLaurier has turned wrenches for Damon Bradshaw, Mike LaRocco, Mike Alessi, and a few more before working for Chad Reed and his new San Manuel/L&M/Yamaha Supercross team.
Yamaha YZ450F News
Yoshimura Intros Products for Yamaha YZ450F
Friday, January 08, 2010
Yoshimura has announced the release of aftermarket goodies for the new 2010 Yamaha YZ450F.
James Stewart YZ450F Replica Giveaway
Thursday, February 26, 2009
Wouldn't it be great to win a brand new Yamaha? Well, now is your chance. Through May 3, 2009, Yamaha Motor Corporation is accepting entries for a chance to win a James Stewart Replica YZ450F.
Yamaha YZ450F Dealerships