The age-old struggle of power versus powerband
The MXA wrecking crew wanted to know what kind of bike a hammerhead like RC really rides. What better way to find out than by riding his race bike?
The bike that Brownie raced to the 125 AMA Championship 19 years ago—and he’ll be racing at the World Vet this November
The MXA wrecking crew rounded up the five prime contenders and put them through their paces. Here is what we learned about the 2004 tiddlers
A Kawasaki-backed Grand Prix team builds an awesome KX125 two-stroke, but with a blue twist
Why Carson didn’t use an KX250F aluminum frame or a 144cc kit, but did use Showa air forks and an Lectron carb
“The other MXA guys started to refer to my KX125 project bike as the ‘green unicorn.’ I told them that it would be finished soon and then they’d be sorry. I lied!”
Did you own any of these 125cc or 250cc winners throughout the two decades?
For 2000, the KX engineers added more inertia to the drivetrain to help the KX125 churn out a broader powerband. Unfortunately, it didn’t work as well as they hoped
In 2004 Kawasaki broke the 35 horsepower barrier on its KX125 by making seven changes to the engine
We do know that there was one kid doing pretty well on a KX125 in the AMA 125 Nationals back in 2004, but his magic didn’t translate into a lot of copycats with money
We ride the bike that Ricky raced at the 1999 Motocross des Nations in England
Everything you need to know about the 1999 Kawasaki KX125 — it’s not 19 years too late if your old one is still in the garge
Ben Graves’ 2005 Kawasaki KX134
Back in 2000, we ran the stock 160 main jet, N7NW needle and 45 pilot, but dropped the 55 Powerjet for a leaner 42.
Get Motocross Action’s simple setup tips for your 2004 motocross bikes
2004 KAWASAKI KX125 Kawasaki engineers succeeded in boosting overall power of the 2004 KX125 and revised the chassis for even sharper handling characteristics. *The combustion chamber of the liquid-cooled, 124cc, two-stroke single-cylinder engine is reshaped and compression increased to give it more low and mid-range power and crisper throttle response. *Aiding the enhanced throttle response is a new piston and ring, which has the piston ring locating pin at the rear of the cylinder to evenly distribute…
We can’t tell you how to jet your bike. It’s a big world out there (and we don’t know you all that well). However, we can tell you what jetting we run in the MXA test fleet. Take into account that we race in a Mediterranean climate, near sea level, within sight of palm trees and never far from a Double Latte. We also run fresh 92-octane gas, work on our bikes every week, clean the filters, change pistons and rings regularly, are alert to pinging and haven’t changed oil brands in over a decade. This is t…