Bike Tests

The older brother of the National Champ is no slouch—neither is his Yamaha YZ250F
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A scary fast bike that only the gifted could ride. But was it enough to beat out the four-strokes?
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Air forks can do some things that spring cartridge kits can’t do and vice versa. Best of all, air forks come on the bike—no need to spend $2000 to $7000 on aftermarket forks if you learn how to use the air properly. 
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Man loves YZ125, man loses YZ125, man finds it again — love resumes
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Doug is the Chief Product Officer, and DR.D is not allowed to introduce any new pipes without Doug’s stamp of approval. Doug is still testing and developing every exhaust the company makes, and one benefit of Doug’s smaller stature is that…
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Believe it or not, the 2025 Husqvarna FC450 is the only 450 to crack the 60 horsepower barrier—yet it's still a pleasant powerband from low to mid.
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Sometimes you love a bike in spite of its flaws—that is what defines the 2014 Kawasaki KX250F
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Three uniquely different two-stroke for uniquely different riders— a full-race Kawasaki KX112 for a future star, a well thought out Yamaha YZ250 & a full-on, one-off Kawasaki KX315 big bore
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MX-Tech is a small suspension manufacturer out of Bradley, Illinois, and they specialize in making their own high-end A-kit suspension for all brands of bikes—from modern to vintage...and in our cases, Honda two-strokes.
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We built it using a 2023 GasGas MC350F foundation, Cylinder Works 366 engine, shortened Husqvarna Cone Valve forks/shock linkage & lots of love
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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.
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We list 15 updates to the Kawasaki KX250 for the 2025 model year. It was very fast in 2024 and promises to be even faster in 2025
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Dubach Racing & Development jumps into the two-stroke market and MXA tests their all-new YZ85 set-up
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Ten year ago the MXA wrecking crew was the first to put the magical 2008 Honda CRF450 up against the newest high-tech Honda CRF450 of the time
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It seemed like a brilliant idea at the time. Plus, it answered a lot of questions that people asked. I's race the first AMA 450 National on a 350 and the second one on a 450. The problem is that the solution isn't applicable to the AMA…
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MXA took them trail riding, we spun laps on the Glen Helen motocross track, we raced them, we climbed Mt. Saint Helen and we rode it underwater (see video)
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We had the two top 500cc two-stroke builders make the wildest CR500 and KX500 known to man—with video of both bikes
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Lots of power, large fuel tank, wide ratio transmission, hand guards, skid plate, O-ring chain and mounting points for the GYTR fan kit
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Why does our brand-new 2014 Yamaha YZ125 look eight years old?
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The 250SX has a 66.4mm bore with a 72mm stroke, while the 300SX shares the same bottom end, but its bore and stroke measures at 72mm x 72mm. The bigger bore adds up to an extra 43cc to make the 300SX a 293cc.
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The biggest update on the 2024 Husky TC65 is the fact that you can now adjust the seat height of the TC65 Junior Cycle between low, standard or tall positions 
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From a distance it looks idenctial to a. full-size GasGas MC125. No more oddball design choices, just a down-sized version of the big bikes
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Two-strokes are not approved by the powers-that-be at the AMA, MXsports, FIM, BLM or EPA—which wins us over instantly
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