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THE BIGGEST MISTAKE IN DIRT BIKE MAINTENANCE: MR. KNOW-IT-ALL

Dear Mr. Know-It-All, Quick question for you. What is in your humble yet stubborn opinion the most overlooked maintenance item on a dirt bike? Jimmy D via mrknowitall@hi-torque.com Well, Jimmy D, over the decades I have had the inevitable task of helping pilots with seemingly advanced tasks in deducing why their dirt bike is ill, […]

DO GUMMY TIRES MAKE A DIFFERENCE? MR. KNOW-IT-ALL

CHEWIN’ ON THE GUMMY Dear Mr. Know-It-All, I’m a woods rider, and like every guy with my passion, I want to be like Graham Jarvis when the terrain gets rocky and ugly. My question is this: will a gummy or sticky rear tire make a difference? It seems that I get stuck. The tire spins […]

FOOTPEG HEIGHT CHANGE: MR. KNOW-IT-ALL

STICK A PEG IN IT Dear Mr. Know-It-All, I have a ’21 KTM 300 TPI and have a question. First, the footpegs feel too high. Maybe it’s my 6-foot-4 height, but I’m struggling to sit and stay forward on the bike. What’s your recommendation? I heard that the SX/XC pegs are lower but was wondering […]

DEALING WITH BIG DROPS: MR. KNOW-IT-ALL

SLIPPERY SLOPE Dear Dr. Know-It-All, I know you have answered this question before, but I really have trouble with drops on the trail that are rocky and wet. I panic and usually walk my bike down. I want to do them like Cody Webb and all the other extreme guys. What’s the secret? Bulldog Doug […]

CHAIN GUIDE BLUES: MR. KNOW-IT-ALL

USED AND ABUSED Dear Mr. Know-It-All, I have an older KTM dual-sport wagon that I ride every weekend. I think I have over 800 hours on it, and she’s been quite the mule. My question concerns my chainguide, which broke recently and derailed my chain on the trail. It was a nightmare to get back […]

WHAT TO WEAR UNDER KNEE BRACES: MR. KNOW-IT-ALL

RUBBED RAW Dear Mr. Know-It-All, I am wondering, what’s the best thing to wear under knee braces? What do the pro off-road guys do to keep from rubbing their legs raw in long races? I have tried the tall socks. EVS and Fly have held up the best. Fox is junk. Moose isn’t so great. […]

DIRTY FILTERS: MR. KNOW-IT-ALL

NO FILTER Dear Mr. Know-It-All, I’m an old guy (60-plus years old) and still am an avid rider. I ride a 2016 Husky FE350. I’m religious with the maintenance of the machine. My question relates to air filters. Several years ago, I started using No Toil cleaner and oils, as I thought the solvents were […]

THERE SHE BLOWS AGAIN: MR. KNOW-IT-ALL

NO TOLERANCE Dear Mr. Know-It-All, Hello, sir, I have a 2002 KX85 that I rebuilt top to bottom this winter that is having an issue. A previous owner sleeved it 0.5mm overbore, and the only piston kit I found was a forged Wiseco. I heard that the thermal expansion rates could be an issue, especially […]

MR. KNOW-IT-ALL: LUBE HER UP

WHICH LUBE IS BEST? Dear Mr. Know-It-All, I have a 5-year-old KTM 250XC and flat worship this machine. I’m religious about oil changes, filter cleaning—basically all maintenance—since I want this sucker to last. My question is, should I run a special oil in the transmission or is a good four-stroke oil fine? Synthetic or a […]

2002 HONDA CR250R 2-STROKE PROJECT: BEHIND THE BUILD

The Honda CR250R has got to be one of the most popular early-to-mid-2000s two-stroke machines to rebuild in history. One reason is that Honda sold a ton, and the other reason is the bikes all seem to be aging very well. We found what looked like a very clean machine on the used-bike market, slapped […]

ONE WITH NATURE, USED BIKE STYLE: MR. KNOW-IT-ALL

UNEXPECTED GROWTH Dear Mr. Know-It-All, In regards to your response to Mr. Tonks’ question concerning used-bike fitness, I would suggest there are other factors one must consider in the era of ESG and related issues surrounding sustainability. Your readers should be careful to check for broader environmental risks, as once it is determined that Mother […]

STEERING FIX: MR. KNOW-IT-ALL

GET GREASED UP Dear Mr. Know-It-All, My 2019 KTM 300XC-W turns like it has a steering stabilizer. Only problem is, I don’t have one on there. Why does my steering feel like cement all of a sudden? I’m having trouble controlling my bike. Should I take it back to the dealer? Miles via mrknowitall@hi-torque.com I’m […]

TPI 2-STROKE OILS: MR. KNOW-IT-ALL

TEXAS TEA Dear Mr. Know-It-All, What is the best oil to run in the current TPI machines? I just purchased a 2021 Husqvarna TE250 and want the machine to go the distance. Ryan Chef via mrknowitall@hi-torque.com Although the current models are oil injected, eliminating the hassle of pre-mixing and the two-stroke-muffler drool, there are still […]

DIRTY FUEL: MR. KNOW-IT-ALL

GREEN SPOOGE Dear Mr. Know-It-All, I’ve cleaned the carburetor and flushed the tank on my kid’s 2002 TT-R125L at least a dozen times, but I continue to get green debris in the jets. The bike had been sitting for years. Where is all this nonsense coming from? Josh via mrknowitall@hi-torque.com Josh, Josh, Josh, use that […]

BIKE STANDS VS. CENTER CASES: MR. KNOW-IT-ALL

ROCK THE CRADLE Dear Mr. Know-It-All, I have been an off-and-on subscriber to Dirt Bike Magazine since 1982. I have a new Suzuki DR-Z125L. Since that bike has no full cradle, it uses the engine case as part of the cradle, much like the old Honda XR80 or the new Yamaha TT-R125. Is it okay […]

WHY SO MANY THROTTLE CABLES? MR. KNOW-IT-ALL

Dear Mr. Know-It-All, Why do TPI bikes come with two throttle cables? I’m starting to see aftermarket kits converting them back to a single cable. My specific bike is a 2021 KTM 300XC-W TPI. Steve Baum via mrknowitall@hi-torque.com   It’s a safety system in case the spring on the throttle body fails. The second “push” […]

PEG ADJUSTMENT: MR. KNOW-IT-ALL

HIGH OR LOW? Dear Mr. Know-It-All, I am installing some Fastway Evolution pegs on my machine and am wondering which position to put the pegs in? The collar provided allows you to run them either in the stock position or a lower position. Have you had any experience with this? Marv Stuller via mrknowitall@hi-torque.com This […]

COOLANT LEAKAGE: MR. KNOW-IT-ALL

DRIPPAGE Dear Mr. Know-It-All, My 2002 CR250R is dripping coolant from this tiny hole under the water pump. What on earth is this hole, and how do I go about fixing this? Max Sheldon via mrknowitall@hi-torque.com That little orifice is a weep hole. It’s a sort of safety valve alerting you that your seals and […]

USED BIKE CHECKLIST: MR. KNOW-IT-ALL

CHECKLIST Dear Mr. Know-It-All, I’m going to look at a 2003 CR250R. The bike looks fairly clean, and the owner says the engine has never been rebuilt. What are some things I should look for to ensure I’m not buying into a mechanical nightmare? Herby Tonks via mrknowitall@hi-torque.com Great query, Mr. Tonks. Used two-strokes are […]

INJECTOR CARE: MR. KNOW-IT-ALL

Dear Mr. Know-It-All, I’m doing a top end on my 2021 KTM 300XCW and was wondering if I have to remove the injectors from the cylinder to slide the cylinder off? Ron Hector via mrknowitall@hi-torque.com Removal of the injectors is not necessary to remove the cylinder. Just unplug them, noting which plug goes to which […]