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BIKE TEST

2011 KTM 250SX MOTOCROSS TEST: NOT A WARMED-OVER BNG BIKE, BUT A TOTALLY NEW TWO-STROKE FOR THE NEXT GENERATION

Q: FIRST AND FOREMOST, IS THE 2011 KTM 250SX BETTER THAN THE 2010 KTM 250SX? A: Yes. KTM has consistently modernized their two-strokes with chassis updates, stylish aesthetic changes and two-stroke-specific tweaks.   Q: WHAT CHANGES DID KTM MAKE TO THE 2011 250SX? A: Here are the six areas that KTM focused on for the new model year:     (1) Cylinder . KTM redesigned the cylinder with a lower exhaust port (about 1mm) to improve bottom-end power. The lower flap height of the power valv…

FRIDAY’S USED MOTOCROSS BIKE GUIDE: HOW TO SETUP YOUR 2010 KAWASAKI KX250F:

This is the 2010 Kawasaki KX250F 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. Throttle tube: Kawasaki vulcanizes the rubber grip to the throttle body, so it takes the patience of a saint to completely remove the grip. We pitched the throttle tube/grip assembly and installed an aftermarket aluminum throttle tube. The metal tube is very durable and …

WE RIDE RIDE ENGINEERING’S 2010 YAMAHA YZ450F:

Just like the star quarterback in high school, the 2010 YZ450F is the BMOC this year. Everyone wants to touch it, be near it and, if possible, get a date with it. There is little doubt that this year’s Big Man On Campus caught the attention of the public with its reverse exhaust, tilted cylinder, offset cranks, downdraft EFI and cab-forward airbox. Not since the heady days of 1973 when word leaked that Honda would make a two-stroke has a bike been so eagerly anticipated (even the leaked tech info fed in…