four-stroke

As trick as any factory Motocross bike, but with specialized parts for off-road use
Read More...

Is the 2014 Husqvarna FC250 a KTM clone? Or KTM Plus? This MXA test tells the whole story in more detail then you'll need
Read More...

The 2014 Honda CRF450 Is slow. We can't dance around the elephant in the room. It doesn't make much horsepower, and it signs off very early. One caveat: don't try to rev it out. It is most competitive when kept below 8500 rpm.
Read More...

Much of the credit for the improvements goes to homegrown solutions, the ideas and concepts developed by local racers, hardcore KTM owners and the race teams, that KTM implemented into the 2014 KTM 450SXF.
Read More...

Only Stewie flew the smoker flag
Read More...

The MXA wrecking crew tested, documented, inspected, theorized and calculated every conceivable facet of the 250 four-stroke class for 2014. Your future bike now!
Read More...

But, If you “don’t have spark,” there is nothing to light the compressed fuel and air with. Spark is an a major part of the "Fire Triangle."
Read More...

With some reasonable modifications, a CR450 can be transformed into a desert racer, enduro bike, supermoto bike, dirt tracker, TT racer, sidecar racer or even a road racer
Read More...

For a few years now; the YZ250 Yamaha has falling behind KTM, Husqvarna, GasGas and Kawasaki on horsepower numbers, but the YZ250 makes up the difference if you stay in the meat of the powerband.
Read More...

Yamaha has to convince you that their backwards engine idea is good and until they do they are paying the "Penalty of Taking the Lead"
Read More...

MXA was of the opinion that KTM had sandbagged the first 350SXF. If the 2011 KTM 350SXF had run as well as the 2013 350SXF, there would be a lot more 350cc bikes on the racetracks today
Read More...

What do you get when old world Italian craftsmen try to become part of the mass production motocross business? Trouble
Read More...

Come with us on the journey back to 2011 to see what we thought of the first-ever KTM 350SXF ... you'll be surprised!
Read More...

Did the YZ400 have anything to fear from the 2000 KTM 520SX? You bet. This bike had an incredible powerband
Read More...

With the 2023 Supercross series just a couple days away, we have to asked, do you remember when Lance Smail, Tom Moen and KTM 540SX made Supercross history
Read More...

The four-stroke that Yamaha Japan wouldn't build, but it got built anyway, then Yamaha USA wouldn't import it, so it was sold as a kit bike
Read More...

Take this quick survey and be entered for a chance to win a brand new $2959 SSR SR140TR Big Wheel Play Bike
Read More...

MXA had asked Honda about testing Ricky Carmichael’s 2004 CRF450, but after RC announced that he was switching to Suzuki for 2005, we crossed it off our list. Surprise! It was about to be crated up sent to the Honda Museum in Japan when…
Read More...

Jody on two-strokes: "It is not my job to tell you what's good for you (well, actually it is, but it's not your job to listen to me)
Read More...

Kawasaki shares the details on the KX450, KX112, KX85 and KX65 models—which are all the same as last year
Read More...

The black sheep of the sport suddenly becomes the fan favorite and not longer after takes over
Read More...

Before Josh Mosiman came to work at MXA or Jamie Ellis wrote his "Twisted Logic" column for MXA, they collaborated on a very special "Smart" Husqvarna FC450
Read More...

Think sofa. The 5.0 N/mm forks on the KX450 motocross model are already way too soft, so you can easily imagine what the KX450X’s 4.8 N/mm spring rate and softer damping feel like
Read More...

How to fix the 2020-2021 Yamaha YZ450F with a few common sense moves and crack 60 horsepower with something out-of-the-box
Read More...

If they ever wanted to switch to making motocross bikes, they could build a powerhouse team of French riders
Read More...

The big focus for the Yamaha engineers was updating the 2021 Yamaha YZ250F— here are the changes they made to all their motocross bikes
Read More...