How To

Dear Mr. Know-It-All, My 2017 GasGas  300 has been giving me a headache lately. The problem lies in the rear brakes; they keep locking up from getting too hot. I’ve adjusted them and made sure that the pedal isn’t too high up. While riding…
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Suzuki now has a smartphone-based tuner app, similar to the Yamaha Power Tuner. Chris Wheeler takes us through a quick demo of the features in this Suzuki-produced video. 
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WR450F PISTON REPLACEMENT? Dear Mr. Know-It-All, I am a slightly overweight, 50-plus-year-old slow guy who has enjoyed my 2005 Yamaha WR450F since purchasing it new in 2004. I religiously service the bike myself, including regular oil and…
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STUFFED POTATO Dear Mr. Know-It-All, My 2003 KX125 has started running as if someone stuffed a giant Idaho spud down the throat of its exhaust. It’s super rich and loads up badly. It has a fresh motor all around from top to bottom. I…
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The late ’90s to mid-2000s Suzuki RM250 two-strokes might just be the best used motorcycles out there. They feature a strong engine and a great handling package that makes the bikes fun to ride. This is probably why we don’t come across…
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BAFFLED Dear Mr. Know-It-All, I have a 2002 KX250. I love the bike, but recently it has started running very rich. It’s not losing transmission oil, so I know the crank seal is okay, and I’ve played with a million needles and pilot jets…
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A FASHION RISK Dear Mr. Know-It-All, I have a fashion question for you. Do you know of a vented/warm-weather off-road pant that has a slimmer-than-normal knee area for those of us who don’t yet wear knee braces? The local shops have a…
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Dear Mr. Know-It-All, This past winter I tore into and rebuilt the motor on my 2002 YZ 250—new rod and main bearings and all-new bearings and seals in the transmission. Had the cylinder re-Nikasiled and added a new piston. It runs great;…
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RUNNING ON EMPTY—the sequel Dear Mr. Know-It-All, I have a follow-up to Ken’s two-stroke running-out-of-fuel question. Let’s say someone forgot to turn on his petcock and sputtered to a stop on the trail at low-to-moderate throttle. No…
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There are so many ways you can get more from your passion for dirt bike racing. Yes, there is actually owning a bike and getting out and about. On top of that, though, you could attend live events, read some great books on the subject, bet…
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SHE HAS A BLEEDER Dear Mr. Know-It-All, I recently changed the coolant on my 2001 KDX200. After pouring in the fresh coolant, I was skimming through my shop manual and realized the bike has an air bleeder on the cylinder head for the…
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A 480-POUND POGO STICK Dear Mr. Know-It-All, I bought a 2015 KTM 1290 Super Adventure new, and I love everything about it except the suspension. The rear suspension has exceptionally light damping to the point where the bike just pogos up…
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Dear Mr K I'm a two stroke guy who hasn't owned a two-stroke in years. Somewhere I gave in to peer pressure and got a used Suzuki RM-Z250. Unfortunately, I love it. It's unfortunate, because I have now ridden it for over 250 hours with…
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TELL ME WHAT TO DO! Dear Mr. Know-It-All, I have a 2020 KTM 250XC TPI. Love the handling and suspension. Only “like” the motor performance. Stock, the motor is spluttery at partial throttle openings from low- to mid-range…
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Dear Mr. Know-It-All, Last year I purchased a 2019 Beta 300RR, and while I am loving the bike, I recently had an issue with the oil injection. The oil light on the computer continues to stay on as if the oil level is too low, even after I…
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Here's Dirt Bike's guide to the 'right' way to clean and lube your chain, either non-sealed or O-ring drive lines.
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GLUG OR SPRAY Dear Mr. Know-It-All, With all of the air filter oils on the market, is it better to use spray-on or pour-on filter oil? Everybody says spray-on oils aren’t as potent. It seems much more efficient to spray on the filter oil…
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Z 250 RING-DING PINGS Dear Mr. Know-It-All, I have a 2009 YZ250 that I race on both tracks and off-road. The bike runs extremely well, but I get some detonation when I put a load on the motor for long periods of time. My jetting is on the…
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Flat tires are the bane of the off-roader. Here's the low down on what you need to fix them at home, at your campsite and on the trail.
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