KTM tests

How to build your own Loretta Lynn Championship-winning replica — Plus video
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"The worst business decision that KTM ever made was to buy the Dutch-based WP suspension company"
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The new 250SXF and 450SXF Factory Editions will be available at dealers in January
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Is the obvious winner the fast one, the one with the most high-tech features or the fun one
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We race-test bikes because that’s when the pros and cons of a motorcycle stand out the most. No matter how hard you try in practice, it’ll never replicate the intensity that comes out on race day
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MXA wrecking crew test impression—an uplifting dose of the truth
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CRF450 vs. YZ450F vs. KX450F vs. 450SXF vs. FC450 vs. RM-Z450
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You may have owned one of these in your youth because the 2004 CR250, KX250, YZ250, 250SX & RM250 were in their glory 20 years ago
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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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There were so many frame changes for 2025 that the whole nature of the 450SXF chassis changed from ultra-stiff to forgiving
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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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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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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 Factory Edition KTM 250SXF is $1200 more than the stock 2024 KTM 250SXF, and the GasGas MC250F Factory Edition is almost $2000 over the 2024 MC250F price. Still, the extra money buys you the much-improved frame and a healthy list of…
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If someone gets to ride the champ's bike — it might as well be MXA
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If you’re looking for the best 125 to race the Amateur Nationals or 125 money classes, like the Pasha 125 Open races, the new-generation KTM 125SX isn’t ready for the big time yet
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KTM’s engineers did a very good job of addressing the bad things about the 2024 production KTM 450SXF and enhancing the good stuff. And, yes this is the 2025 model.
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One important caveat in the dream-bike scenario is that the bike cannot have a 450cc four-stroke engine. Why would it? Four-strokes are readily available and thus not dreamy enough.
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Thankfully KTM picked up the two-stroke gauntlet thrown down by Honda, Kawasaki and Suzuki and their efforts kept the two-stroke alive
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If there are no cam, valve, piston, throttle body, fuel pump or crank differences between the FC350, MC350F and 350SXF. Why do all three engines run so differently on the track? The answer lies in four simple parts.
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In 2004 Kawasaki had just launched its all-new KX250F. The team offered the four-stroke to James, and he tried it during the pre-season. He decided to stay with the KX125 two-stroke instead
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Was the KTM 380SX faster than the KX500 and CR500 of their times? Yes and no. Why didn't the unique KTM 380SX mid-size two-stroke catch on? It should have
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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.
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With the 2025 models just peeking over the horizon, it's a good chance to catch up on the bikes that are still on the showroom floors—the 2024 250, 350 & 450 four-strokes
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