Ask MXperts

If you want to be precise, you need to treat your preload ring as though it was easily deform. Lube the threads after every race and don't hit it with a flat-bladed screwdriver
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The airscrew is a very valuable tool for tuning your carb. not only can it change your biks jetting, but helps you choose the correct pilot jet
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When you go to the races, the pits are log-jammed full of row after row of white cargo vans. If a dealer saw this, he's be hanging out in the pits every weekend handing out business cards
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Forget about emulating Eli Tomac—think of yourself as John Force. Twist the throttle to the stops and leave it on as long as possible, you will go faster
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Tire sizing is an inexact science, because it depends on how the tire manufacturer chooses to make this measurement. Thus, most 120 rear tires are not true 120s.
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There is a correct answer, but the grammar police never leave the comfort of their basement lairs and schoolmarm sensibilities rarely apply at the track
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Desaxe engines have been around for a long time, even Henry Ford implemented offset cranks on the Ford Flathead V8 in the 1930s. Motocross engines have been adopting offset cranks for the last 15 years.
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Just what the sport needs—a third grade explanation of frame geometry
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Two-stroke pipes can take a lot of abuse, but small dents, as long as they aren't in the first six inche sof the pipe can oftyen improve the power.
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Pick and choose exactly where titanium bolts can do the most good and forego the rest
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It doesn't matter that road racers, dirt trackers and SuperMoto racers balance their wheels, motocross is an unbalanced world of its own
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Do you really think that racing a 54-horsepower, 14,000-rpm, 350cc race bike is going to be safer or cheaper than racing a 450?
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A short story to explain why you are not alone in your query
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"Give me a lever long enough and a fulcrum on which to place it, and I shall move the world." We didn't know that Greek mathematician Archimedes had ever raced
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Modern four-stroke motocross bikes rely high rpm to make horsepower, but early valve sprins either broke for floated. Italian engineer Fabio Taglioni pioneered the desmo valve train and solved the valbe spring issues
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Two-stroke spark plugs were subject to oil contamination and carbon build, but four-strokes don’t have this problem, but their plugs still wear out
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Clearing up the claims of non-existent Champions who depend on time to cover up their misleading claims
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There is a reason why Yamaha supplies two extra needles with every YZ250 two-stroke –we explain the needle code
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Well, actually it is a melting kind of thing and a lost art in the motocross world. You can get more life out of old rubber with a tire groover
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Basic common sense settings are all you need to make your suspension work better and they are free
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We weren't trying to make the 2023-2024 Yamaha YZ450F faster, it's fas enough, we wanted it to be more manageable
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Famous Jody quote # 327: "The only thing I can afford to break in the middle of a race is the zipper on my leathers."
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Don't obsess on your fork's air pressure. Find the correct setting for your speed, weight and track and stay with that number. From that point on depend on the clickers to fine tune the feel
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"I was surprised to read in an MXA test that Husqvarna makes guns. Is that true?"
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It is a fact of life that engines used for racing are prone to breaking. Every part is stressed and could fail at any time—your job to to keep a close eye on the weak spots before they break
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MXA does run Maxima K2 pre-mix, but we do not run Maxima k2 injector oil as pre-mix—and there is a very good reason
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Slipper clutches are not autos, but auto clutches slip and you can do the same thing with your left hand
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The choice to paint MXA's helmets one color (and one color only) was brainstormed 30 years ago. It was the result of a year-long test to blue, red, green and chrome helmet designs
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I see riders put their right hand over the end of the muffler and blip the throttle, even MXA test riders, why do they do this—it makes no sense.
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