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Two Stroke

2009 KTM 150SX AND KTM 250SX TWO STROKES:

You might consider this a test of rare, exotic and unusual machinery. Don?t let the fact that these are production bikes fool you into thinking that they aren?t extremely unique. They are. In a world where two-strokes are now…
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2009 SUZUKIS

First Look: The 2009 Suzuki Line-Up Suzuki will be the first major manufacturer to release its 2009 motocross models, with bikes arriving in dealerships mid-summer. There are very few changes to the RM-Z450 and RM-Z250, but that's not…
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2009 KTMs

What's new on the 2009 KTM 450SXF? First and foremost, the 2009 450SXF almost got a five-speed transmission, but at the last second KTM decided to stay with the four speed box. The black anodized triple clamps feature 18mm or 20mm…
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2009 YAMAHA YZ125 SPECS

Key Features: A light, aluminum frame housing an amazingly light and compact engine results in an awesome power-to-weight ratio. Ready to race out of the crate, complete with a ProTaper aluminum handlebar, titanium footpegs and gripper…
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2009 YAMAHA YZ250 TWO-STROKE SPECS

Key Features: Our legendary two-stroke Supercross winner is more potent than ever. A light, aluminum frame housing a patented YPVS Power valve-equipped ripper of an engine results in an awesome power-to-weight ratio. Ready to race out of…
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2008 RACE TEST:KTM 125SX VS KTM 144SX

125 144 If the MXA wrecking crew ran Yamaha, the only other Big Five manufacturer to produce a 125cc two-stroke in 2008, we?d order the R&D department to turn it into a YZ150 for 2009. Face it; the classic model of the 125cc class is…
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2008 RACE TEST YAMAHA YZ125

There will come a time when every manufacturer, race promoter, rider and AMA functionary will rue the day that the AMA allowed 250cc four-strokes to compete against 125cc two-strokes (not to mention the stupid unleaded gas rule that…
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2008 KTM’S

2008 KTM 450SXF What's new on the 2008 KTM 450SXF: (1) The crankshaft weight has been reduced, but the inertia has been increased (by moving the weight farther out on the flywheels). (2) KTM's dual counterbalancers have been reduced in…
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MXA’S 2007 KAWASAKI KX250 RACE TEST

It is entirely possible that the 2007 Kawasaki KX250 is living on borrowed time. Last year, with little or no warning, Kawasaki dropped the KX125 from its lineup. The fact that the KX250 survived into 2007, albeit unchanged, is a testament…
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MXA BIKE TEST: 2007 YZ250

The truth about 250cc two-strokes is that they are wonderful pieces of racing machinerytechnically advanced, lightweight, blazing fast, cheap to maintain, and capable of being worked on with backyard tools. All of that is undeniableas is…
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2007 YAMAHAS

YZ450F New for 2007: Replacing the upper cast triple clamp with a light and strong forging, slightly reducing steering head rigidity, and the use of lighter outer fork tubes; lighter wheel rims and light wave-type brake rotors add up to…
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2007 SUZUKIS

RM 125 2007 RM125 Get ready for a shot of mid-range designed to help you blast past the competition. The RM125 has a wider powerband and more controllable power delivery than ever. Couple that smooth, strong power and refined…
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MXA’S 2006 KTM 250SX DIRT BIKE TEST

KTM was the smallest of the Big Five. It didn't have the massive output in scooters, golf carts, power equipment, automobile engines, oil tankers, airplanes and motocross bikes of Honda, Yamaha, Suzuki and Kawasaki. But small isn't…
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2006 HONDA CR250 RACE TEST

Of all the major manufacturers, Honda can be forgiven for not throwing the full weight of their engineering prowess behind the 2006 CR250 two-stroke. After all, way back in 1972 Honda vowed that they weren't interested in building…
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2006 HONDA CR125 TEST

The fate of the 125cc two-stroke has everyone in the motorcycle industry in a conundrum. While they are committed to continue producing 250 two-strokes, largely because unit sales are larger and the machines are still competitive in the AMA…
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SUZUKI REVEALS COMPLETE 2006 LINEUP

2006 SUZUKI RM-Z450 The RM-Z450's entry into the world of 4-stroke motocross has met with great success. The RM-Z has established itself as the 4-stroke machine that handles like a nimble RM, but with the type of strong, tractable 4-stroke…
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