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250SXF

2012 250 DYNO SHOOTOUT! HOW MUCH HORSEPOWER DO THE 2012 250s REALLY MAKE: WE REVEAL THE INNER SECRETS OF THE 2012 POWERBANDS

The MXA wrecking crew spends the majority of its test time racing and riding brand-new production motorcycles, but early on in each test session every bike gets its day on the dyno. It really isn?t all that revealing because by the time its strapped down it has already been ridden to break in the engine, seat the muffler packing and get a feel for where it rates. Test riders form their opinions in the saddle and rely on the dyno numbers to reinforce what they already know. When the dyno numbers are spit…

MXA’S 2012 250 FOUR-STROKE SHOOTOUT: OUR BRUTAL & HONEST OPINIONS OF THIS YEAR’S 250 CLASS

    Let’s face it, not everyone is in the market for a 2012 250 four-stroke. That’s okay with us. There are many choices when it comes to purchasing a motorcycle?two-stroke, four-stroke, 125, 250 and 450. Depending on your wants and needs, a 250F might not be your cup of tea. But whatever you decide to spend your hard earned cash on, don?t overlook the positive attributes of a 250 four-stroke. The MXA wrecking crew can attest to the utter delight of holding a motorcycle wide open and blas…

ST. LOUIS SUPERCROSS: THE RYANS GO ONE-TWO, ONLY THIS WEEK IT’S A DIFFERENT RYAN THAN LAST WEEK: STEWIE NOW TWO FULL RACES ADRIFT

Malcolm Stewart’s luck in the 250 East is about as bad as his brothers is in the 450 class. He has speed and determination, but can’t stay off the ground. Photo: Hoppenworld Ryan Villopoto won his fifth race of the season in the Edward Jones Dome in St. Louis in front of 59,742 fans. Meanwhile in the 250 East class, Geico Honda’s Justin Barcia won his third consecutive event to remain perfect (in what will be his final year as a 250 Supercross class rider?Barcia has to move to the 450 class in 2013). 45…

TWO-STROKE TEST: 2012 KTM 150SX IS ALL ABOUT HAVING FUN ON A DIRT BIKE

Q: IS THE KTM 150SX STILL THE ONLY KTM TIDDLER SOLD IN THE USA? A: No, the KTM 125SX motocross bike is back for 2012. Three years ago, KTM made the 125SX obsolete by introducing an identical motocross bike with more power?the 144SX. After a quick glance at sales figures for the 144SX versus the 125SX, KTM decided to shelve the 125SX and only import the 144SX, which would later morph into the 150SX. For 2012, KTM decided that the market for a true 125cc two-stroke was big enough to put it back into the l…

MXA’S 2012 KTM 250SXF MOTOCROSS TEST: DID KTM GRAB FOR TOO MUCH OF THE BRASS RING?

Q: FIRST AND FOREMOST, IS THE 2012 KTM 250SXF BETTER THAN THE 2011 KTM 250SXF? A: No. Electric start does not make a bike go faster; it just makes it start easier.   Q: WHAT CHANGES WERE MADE TO THE 2012 KTM 250SXF? A: Before we jump headlong into the list of 2012 changes, it’s worth mentioning that last year’s KTM 250SXF underwent four major updates. The biggest mods on the 2011 model were made to the shock linkage, electronic fuel injection, chassis and engine. MXA wasn?t expecting the 2012 model…

2011 KTM 250SXF MOTOCROSS TEST: THE BIKE THAT WON THE 250 WORLD CHAMPIONSHIP; WITH LINKAGE AND FUEL INJECTION

Q: FIRST AND FOREMOST, IS THE 2011 KTM 250SXF BETTER THAN THE 2010 KTM 250SXF? A: Yes. The one aspect of past KTM 250SXFs that we always hated was the linear, No-Doz powerband. It made lots of horsepower, but you had to wait for it. It was a no-hit, long draw-out, high-rpm powerband. In the hands of a really fast rider it could go really fast, but in the hands of an average rider it wasn’t so fast. Thankfully, the new fuel-injected 2011 KTM 250SXF doesn?t require any patience. It has an actual you-can-f…

MXA TEAM TESTED: XTRIG KTM PRELOAD ADJUSTER

WHAT IS IT? The Xtrig worm-drive preload adjuster allows quick and precise preload adjustments for KTM 125, 150, 250, 350 and 450 shocks. It eliminates the need to use a hammer and punch or deal with KTM’s iffy nylon preload ring.   WHAT’S IT COST? $149.99 (there are different models for linkage or PDS shocks).   CONTACT? www.xtrigusa.com or (909) 949-4155.   WHAT STANDS OUT? Here’s a list of things that stand out with the Xtrig preload adjuster. (1) Installation. The biggest downside to …

KTM’S ALL-NEW 250cc RACE ENGINE: IT SHARES NOTHING WITH THE CURRENT 250SXF MOTOCROSS DESIGN

Moto3 replaces the existing 125GP class. It was the last of the two-stroke classes in MotoGP road racing. KTM used to be a big player in the FIM’s 125cc GP Championship. But, the FIM has switched all of the two-stroke classes over to four-strokes for 2012. The 125 GP class will now become a 250cc four-stroke class?called Moto3. This is not the KTM 250SXF engine by any stretch of the imagination. The M32 has a bore and stroke of 81mm x 48.5mm, while the motocross engine is 76mm x 54.8mm. Under Moto3 rule…

FRIDAY’S USED MOTOCROSS BIKE GUIDE: HOW TO SETUP YOUR 2010 KTM 250SXF:

This is the 2010 KTM 250SXF the way the MXA test crew raced it. As a rule, we don?t go for exotic or expensive mods, but if push comes to shove, we will seek competent help (no matter how much it costs). Use MXA ‘s mods as a guide.  Tires: The archaic Bridgestone M59/M70 tire combo on the 250SXF works well, but for intermediate-to-hardpack terrain, we swapped the old-school sneakers for Bridgestone’s M403 / M404 combination. Lifting: We thought about enlisting the services of Chris Angel to show us…

2012 NEW MOTOCROSS BIKE BUYERS GUIDE: THE 2012 KTM 250SXF, 350SXF AND 450SXF FOUR-STROKES

2012 KTM 450SXF 2012 KTM 450SXF SPECS Engine type:     Single cylinder, 4-stroke Displacement:     449.3 ccm Bore/stroke:     97/60.8 mm Compression ratio:     12.5:1 Starter/battery:     Electric starter / 12V 3Ah Transmission:     5 gears Carburetor:     Keihin FCR-MX 41 Control:     4 V / DOHC with finger followers Lubrication:     Pressure lubrication with 3 oil pump…

FRIDAY’S USED MOTOCROSS BIKE GUIDE: HOW TO SETUP YOUR 2009 KTM 250SXF:

1. Fork oil height. KTM did lower the oil height for 2009 over 2008, just not enough. We drained 15cc of oil to reduce the midstroke harshness. 2. Shock. For riders above 165 pounds, the stock 6.9 kg/mm spring works well. Lighter riders need a softer 6.6 kg/mm spring (found stock on the 2008 250SXF). 3. Gearing. Of all the 250 four-strokes, the KTM 250SXF is helped most by adding a tooth to the rear sprocket. We swapped the stock 48-tooth sprocket for a 49-tooth sprocket. For Supercross-style tracks we …

MOTOCROSS ACTION’S 2011 250 FOUR-STROKE SHOOTOUT: HOW THEY RANK AGAINST EACH OTHER & WHAT YOU NEED TO KNOW BEFORE YOU BUY

We live in a world of constant judgment. Critical eyes and biased opinions are everywhere. Everyone has an opinion on everything?even stuff they know nothing about. Sadly, one man’s opinion is another man’s resource for a fact. Ignorance compounds ignorance until the overall IQ of the populace is reduced. The world wide web functions like the rats during the Bubonic Plague outbreak. It spreads misinformation with fleas of stupidity and it infects the minds of the masses with half-truths and outright lie…

WHAT YOU ARE MISSING IN THE NOVEMBER ISSUE OF MOTOCROSS ACTION

The November issue of Motocross Action is on sale now. It has nine product tests, two 2011 bike tests, three how-tos, Jody’s Box and tons of photos and technical articles. If you didn’t know what “chain torque” was before you read this article?you will now. Chad Reed dropped out of the 2010 AMA 450 Nationals with the Epstein-Barr virus. This story tells you what Epstein-Barr is. We didn’t want to wait for the 2011, fuel-injected, BMW-engined Husqvarna 450’so, the MXA gang flew to Italy to try it out way…

MOTOCROSS ACTION PRODUCT TEST: R&D RACING KEIHIN FCR POWER BOWL2:

WHAT IS IT? The Power Bowl2 is an upgraded version of the original R&D Power Bowl. It is a complete replacement float bowl, accelerator pump and leak jet that refines fuel flow on Keihin FCR carburetors. WHAT’S IT COST? $249.95 (fits all Keihin FCR carbs) . CONTACT? (562) 864-8218 or www.r1dean.com . WHAT’S IT DO? The Keihin FCR carb is an industrial miracle. It effectively processes the fuel/air mixture at all throttle settings via an ingenious series of orifices, circuits and tracts. As marvelous …

MXA’S 2010 BITE-SIZE 250 MOTOCROSS BIKE SHOOTOUT:

NUMBER ONE: 2010 KAWASAKI KX250F     The Kawasaki KX250F won the MXA 250 shootout in 2006, 2007 and 2008. It got nudged out by the sweet Honda CRF250 in 2009. But, Honda abdicated the throne for 2010, and the revised KX250F slipped right back into the top spot with a powerband that is tailor-made for racing. It’s strong, fast and caters to Intermediate and Pro-level riders. The MXA test riders have a few quibbles with the handling, suspension and gearing, but in a class that is defined by…

NEXT YEAR’S BIKES TODAY! FIRST LOOK AT THE 2011 KTM MOTOCROSS BIKES:

The 2011 KTM 350SXF will soak up the media limelight for the next model year. Mike Alessi will race the hybrid in the AMA 450 Nationals, starting this weekend at Hangtown. [Press Release from KTM]     The new SX generation contains the concentrated know-how of a highly modern Development department combined with the knowledge of a racing department which has been very successful for many years and led by ten-time World Champion Stefan Everts.     Since the beginning of deve…

250 SHOOTOUT: RIDE ‘EM. RACE ‘EM. WRECK ‘EM. REVIEW ‘EM. The World’s Shortest, Most Concise & Honest 250 Shootout You’ll Ever Read; The Perfect Test For People Who Don’t Like To Read Lengthy Tests

250 RODE TEST: RIDE ‘EM. RACE ‘EM. WRECK ‘EM. REVIEW ‘EM: THE WORLD’S SHORTEST, MOST CONCISE & HONEST 450 SHOOTOUT YOU’LL EVER READ NUMBER ONE: 2009 HONDA CRF250    The 2009 Honda CRF250 is not a perfect machine (the forks are harsh, the front tire is unpredictable and the jetting is off), but these problems are overshadowed by an awesome powerband, nice ergonomics and excellent handling. It has taken Honda six years to get the CRF250 to the top of the class..

MXA’S 2006 KTM 250SXF TEST

Motocrossers like to think of themselves as individuals. They believe that they are unique in a world of brown shoes and starched shirts. They want to stand out in a milquetoast world of followers with their bravado, creativity and oneness. In a society rife with conspicuous consumption, subliminal marketing and mass production, racers value their uniqueness above all else. Unfortunately, society doesn’t reward strangenessit punishes it; labels it as cultish; and abuses it by derision. The same holds tr…