The Best Dirtbikes

Theres the 1998 yz 125 the 99 are twice as good.

THERE IT IS THE YZ 1999 125 Heres a little info on the yz 125 1999 Here's what MXA had to say about the '98 YZ125: "No contest! A landslide! Not a single test rider hesitated when asked to select the best 125cc Motocross bike of '98. In fact, it's the third straight year in a row the same bike has earned the honor." And when the YZ125 wasn't busy winning the praise of the press it was winning at the track, capturing the AMA Western Regional 125 Supercross title for the third year in a row! With the new YZ125, we just raised the bar to an even higher level. On the outside, the '99 model looks remarkably similar to the '98 bike, but once you throw a leg over and kick it to life, the excitement begins. The new motor has more firepower ­ and it's got it right where you need it, in the mid-range, so this bike "hits" even harder out of the corners. This boost in power can be attributed to a few key changes. For example, there's a new cylinder that features a larger exhaust port and the shape and size of the scavenging port has been enlarged. The YPVS valve holder has been modified, so the gap between the valve holder and the cylinder has been eliminated ­ this improves its sealing ability for improved high-speed acceleration. The engineers increased the diameter of the ball in the YPVS governor assembly ­ to ensure reliable activation of the Yamaha Power Valve System. Even the carburetor is new ­ it's still a 36mm design, but it's smaller and lighter, easier to service, and it's been redesigned to provide even more low- and mid-range power. The crankcase has been modified ­ changing the shape of the intake path and enlarging the scavenging path ­ to give the YZ125 more "kick" when you hit the throttle. The exhaust system was fine-tuned to match the power output of the new engine and in the process, it lost a little weight and gained a "works style" tail cap. This not only looks trick but reduces clogging with mud. The chassis has new footpeg brackets to reduce weight, and improve maneuvering in tight corners, deep ruts or when railing a berm. And there's a whole new swing arm. It's a lightweight design with a new reduced-friction pivot. To complement the swing arm, the rear shock has also been modified. Up front, the "works-style" KYB forks have been modified for smoother operation ­ particularly in the middle of the stroke. This enables you to more aggressively conquer the whoops with excellent stability and less bottoming. The '99 YZ125 comes with lightweight Excel rims to help reduce unsprung weight and improve handling. Plus the YZ125 is eligible for contingency in one of the largest programs in the industry. The new '99 YZ125. We surprised everyone by pulling away with an even bigger lead.