Browsing tag

2009

FRIDAY’S USED MOTOCROSS BIKE GUIDE: HOW TO SETUP YOUR 2009 HONDA CRF450:

1. Fork springs . The stock 0.46 Kayaba fork springs are too soft. We switched to 0.48 or 0.49 kg/mm springs. 2. Fork valving. With stiffer fork springs installed, the midstroke valving was too light. We sent the forks to Pro Circuit to be revalved. www.procircuit.com 3. Shock spring. For riders over 175 pounds, the stock 5.4 kg/mm shock spring is fine (it will work for riders up to 210 pounds). Lighter riders (under 175 pounds) will need a softer 5.2 kg/mm shock spring. 4. Shock linkage . As it sits, t…

2009 Yamaha YZ250 Two-Stroke; Suspension Settings, Jetting Specs, Likes & Dislikes, Plus Much More

MXA’S 2009 YAMAHA YZ250 TEST     How stupid are we? Don?t answer that. Instead, let’s analyze the facts and, if possible, fix the blame on someone other than ourselves. MXA’s first choice is always the AMA when it comes to looking for a scapegoat, followed by the government, manufacturers, marketing men, and if all else fails?the Eskimos.      What’s the problem? The problem is that somehow we went from racing technologically advanced, cheap and easy-to-maintain two-strokes…

2009 Yamaha YZ125 Two-Stroke; Suspension Settings, Jetting Specs, Likes & Dislikes, Plus Much More

MXA RACE TEST: THE NEW 2009 YZ125 MAY WELL BE THE LAST OF ITS KIND & THE BEST OF ITS KIND    Have you ever heard the phrase, ?Hoisted by their own petard?? Nothing better defines the 2009 Yamaha YZ125 than that archaic phrase. Why? And what does it mean? A petard was a military weapon that was used to blow holes in the walls of fortresses. The metallic device was filled with gun powder and used much in the same way as the modern ‘shaped charge? to direct force in the desired direction. It …

Yamaha’s 2009 YZ250 and YZ125 Intro: The MXA Wrecking Crew Meets The Wolfman

TESTING THE ONLY JAPANESE BUILT TWO-STROKES ON A VERY SPECIAL TRACK Yamaha is the last Japanese manufacturer to make 125cc and 250cc two-strokes for the American market. It is fact that they are proud of. Yamaha is quick to point out that their two-strokes share all the same components as their four-strokes, are ten pounds lighter, easier to maintain, fun to ride and retail for up to $750 less than their comparable four-stroke brethren. John Minert roosts his way under the awning of an enormous oak tree…

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 seat. A pure motocross machine, the light and nimble YZ125 is the perfect choice for riders stepping up from the 85cc class. New for 2009: Dunlop D742FA front tire has an innovative knob pattern for excellent grip and handling. New seat cover has great grip and more durab…

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 the crate, complete with a ProTaper aluminum handlebar, titanium footpegs, gripper seat and Excel rims. New for 2009: Dunlop D742A front tire has an innovative knob pattern for excellent grip and handling. New seat cover has great grip and more durability, and it is eas…