Bike Test: 2012 Yamaha YZ 450F Dirt Action Magazine

20 Мар 2015 | Author: | Комментарии к записи Bike Test: 2012 Yamaha YZ 450F Dirt Action Magazine отключены
Yamaha YZ 450F


Yamaha’s has attracted more scrutiny and than any other Japanese Is it really warranted? And how do you get the most your YZ450F? DIRT digs deep to get the answers



In 2010, Yamaha the dice with a totally new that was far removed from had come before it. The cylinder backwards, the exhaust weaved its way the shock, the airfilter was under the and it was the first EFI bike from

Despite all the fanfare, the bike has not without challenges. While of the model have been and a positive for Yamaha, the GFC has seen a downturn in overall bike and, as a result, development of year-model since then has limited. The 2011 bike was all but to the 2010 model, while the sees only small to the exhaust, mapping and suspension.

The Yamaha executives face is whether to keep throwing into a diminishing market or smaller changes and wait for the to pick up. Yamaha, along most of the other brands, has to take the conservative approach and smaller changes each

On the racing front, success has patchy. In Australia, the CDR team has ultra-successful and claimed several on the bike. Europe has also a good hunting ground for the and all that stands between and championship success is a man named Yamaha and the YZ450F have the US a much harder nut to crack.

Stewart wins nearly heat race yet crashes in every main event; he has teams after his previous was a mess and other Yamaha have changed riders and at regular intervals.

In my opinion, the US has with the bike as there has little or no continuity in the test Sure, the YZ450 is a different but it’s not untamable as race in Australia and Europe have The US needs to assemble the right staff, employ the right riders and stick to a goal than jumping and reacting to other simple fix.

As as James Stewart is, his testing are said to be limited at best. The US teams employ young with limited or no testing so the information coming back to the must be complicated to digest. a project manager, get the right in the right spots and work a unified goal with the then the appropriate fixes can be to the production bike.

In 2012, again there’s change in the production of the bike. To the new noise restrictions around the the exhaust has been modified for noise. But to take up the slack of the noise, the engine mapping has ramped up.

The suspension also some internal valving and that pretty much the list of updates for 2012. this is the same bike as so there should be a lot of information about the bike and how to make the of it.


Well, it goes the 2011 model. The restriction in from the exhaust modifications is by up-specking the EFI mapping. So Yamaha a bit on the exhaust but pinched a bit back the mapping.

As a rider, the only you’ll notice is the induction as the more aggressive the mapping, the induction noise seems to be

Every EFI-driven bike has a style of power with a strong bottom- and mid-range before flattening out up top. pretty much describes the style of power. It’s to gauge how the EFI system on the Yamaha has in regards to horsepower, as they didn’t bolt up a throttle to the existing engine. When the went to fuel injection, the was also reversed, went to a head and a host of other changes were made.

But it can be that the 2010–2012 engine is powerful than the 2009


Buy a GYTR power tuner. a simple, small, blue box allows you to program nine into it and download one into a in seconds. These maps you to change the ignition and EFI mapping in an and are simpler than trying to set bedside alarm.

The changes in delivery can be as subtle or as aggressive as you it.

An exhaust will also Many of the aftermarket exhausts the aggressive hit out of the EFI power and place a bit over-rev up top. This the bike easier to ride still gaining the right high in the rpm.


Yamaha YZ 450F

Yamaha durability. Since the explosion, Yamaha has led the way with quality. We have seen and of riders doing well 100 hours on their YZ without a serious tool on it.

While we recommend that, we do know the Yamaha donk is by far the most and easiest-to-maintain motocross bike on the


Yamaha through a mass centralisation to get the majority of the weight low and at the centre of the As a result, if you put a YZ450F on a set of bathroom you will see the front and rear carry almost the same in a near 50/50 split. Do the to the other brands and you will see 60/40 or thereabouts with the wheel heaviest.

As a result, new to a Yamaha say the front feels That’s because it is and the bathroom test proves it. Race around the world have to get a little more front-wheel back into the Yamaha to help front-wheel traction. companies are now starting to produce mounts that can rotate the and give back that steer feel.

We are getting a set of these ourselves and pass on our info ASAP.


The KYB SSS forks are the on the market. They offer a action with a plush over braking bumps and resistance to bottoming. Faster or riders bump up the spring just to stop dive heavy braking and to compensate for the of the bike.

However, the stock should be on the money for the majority of

The shock also works and our only advice is to get it serviced and run high-quality shock oil that’s to high temperatures. As the exhaust its way around the shock, the heat can warm up the shock and cause the oil to go Good oil will eliminate


The brakes are OK, but not the best in the business. an oversized front rotor on the is a must to add power and feel. The is a bit of a pain to get at and it would be nice if could find an easier way to the filter on next year’s

Despite the changes made at level, the performance of the bike is the same as the 2011 model. The to the engine almost nullify other while the suspension changes are hard to detect you are riding the 2011–2012 in back-to-back If you want a fast, reliable, 450F with good value, the Yamaha is exactly you’re looking for.

Yamaha YZ 450F
Yamaha YZ 450F
Yamaha YZ 450F


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