November 18, 2011
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The December 2011 issue of MXA is jam-packed full of bikes test, technical stories, product reviews and, of course, the 2012 MXA 450 Four-Stroke Shootout. MXA test rider Sean Kranyak is the cover boy on the 2012 CRF450 from RaceTown (395).

The MXA 250 Four-Stroke Shootout will be in the January 2012 issue. Last year the Suzuki RM-Z250 won the prize, but can it stay on top without any significant changes?

When Blake Baggett hit an inflatable Rockstar can that was too close to the track during this year’s AMA Nationals, the issue was hushed up, but this isn’t the first time that commercial decisions by the promoters have put the riders in danger. You might be surprised to learn why wooden drop-offs have been added to the National tracks as of late.

It is no secret that the Yamaha YZ250F frame was designed for a fuel-injected engine. It is also not surprising that Yamaha hasn’t rushed to put their fuel-injected YZ250 mill in the chassis. Thanks to a bigger carb and some fine tuning, the venerable YZ250F has a new lease on life for 2012.

Have you heard the news? Jimmy Mac is dead…to Jody anyway.

The MXA test riders weren’t thrilled with the delivery, placement or breadth of the 2011 KTM 350SXF’s powerband. Guess what? KTM’s engineers got on the stick for 2012 and moved more horsepower down into the range…now it doesn’t take a week to get to the rev limiter.

Everybody loves spy photos of next year’s bikes, even if they don’t always turn out to be next year’s bikes. MXA delves into the process by which future bikes are developed.

The 2012 Kawasaki KX450F has lots of electronic gizmos to help a rider fine tune the power. The MXA gang raced with each setting, dyno’ed each map and tell you what to expect. Meanwhile, over in the MXA workshop, we drained the gas out of every 2012 bike and weighed it. The weights might surprise you.

Suzuki hasn’t been living high on the hog over the last few years. That translates into bikes that aren’t getting yearly updates or new refinements. The only change of note on the 2012 Suzuki RM-Z450 is a seat cover with a red stripe down it.

Do you know what dual fuel injection is? No, not an EFI system that will run on ethanol or gasoline. Dual fuel is the future of EFI…for these ten reasons.

KTM’s diaphragm clutch can have its spring preload adjusted by spinning a dial. Okay, it isn’t that easy, but it is not complicated.

Frank Cooper was the US Maico importer when he decided to build his own brand. Frank went to Mexico to procure a bike that would eventually become the genesis of the Jones Ammex.

You don’t have to memorize the names of all the up-and-coming European riders, because you can just wait until they move to America to race. Until they all get on the boat, here is a breakdown of who’s who in the European zoo.

Yamaha made a couple very good changes to the YZ450F for 2012. You need to find out what they are, and how they interact, to understand why the 2012 YZ450F is better than the 2011 model.

Everybody has questions that need to be answered. Ask the MXperts is a quick and easy clearing house of motocross queries.

The MXA wrecking crew didn’t just do a parking lot shootout. The 2012 MXA 450 Shootout is 16-pages long. We rate them from sixth to first.


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