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Kawasaki tests

2009 KAWASAKI KX450F

A leaner, stronger and EFI equipped racing thoroughbred Comprehensively re-designed with a new fuel-injected engine, chassis, bodywork and extensive durability enhancements, the 2009 Kawasaki KX450F motocrosser is sleeker, faster and more high-tech than ever. Although it has undergone the biggest makeover since its original 2006 debut, the new KX450F still shares a clear bloodline with its championship-winning predecessors.   The upgrade to Electronic Fuel Injection (EFI) eliminates the need to adj…

First Ride: 2009 Kawasaki KX450F

By John Basher With all of the buzz circling around the 2009 Honda CRF450, it seems that many people forgot about the new Kawasaki KX450F. If you fall in that category, then shame on you! Kawasaki went whole hog on their 450 for 2009, utilizing electronic fuel injection, a new frame, different suspension settings, and even new styling. It is easy to understand that this is the biggest change that the KX450F has received since its inception in 2006. To introduce the bike, Kawasaki rolled out the red carp…

2008 RACE TEST KAWASAKI KX250F

It would be easy for you to assume that the Honda CRF250 has ruled the 250cc four-stroke roost since its introduction in 2004, but nothing could be further from the truth. The real winners in the deuce-and-a-half thumper sweepstakes have been Yamaha and Kawasaki. Yamaha invented the category in 2002 and owned it through 2005. When Suzuki, Kawasaki and Honda entered the fray in 2004, Yamaha steamrolled over the still-teething red, green and yellow competition. Then, in 2006, Kawasaki threw off the shackl…

2008 RACE TEST KAWASAKI KX450F

  If there is a cause celebre for the 2008 motorcycle manufacturers, it is the total focus on making the new engines easier to use, more controllable and smoother. Kawasaki has joined the parade. They gave up the horsepower advantage they had in 2007 to go for a broad, mellow and less violent power delivery. While engine management issues got the most attention in Japan this year, there was a secondary issue?frame flex. And we aren?t talking about eliminating frame flex, but feeding it back into th…

2008 Kawasaki KLX140 Intro: Barrel Of Fun At Gorman

  Kawasaki introduced the new 2008 KLX140 to the press at a special ride day at Gorman Motocross Park in Southern California. In attendance were various publications, Kawasaki engineers and PR folks, former Two-Wheel Tuesday host Greg White and the MXA wrecking crew.  After an informative technical presentation, everyone got to swing a leg over the new green machine.  There were plenty of smiles underneath helmets as the herd of KLX140’s blasted around Gorman’s minicycle track and an…

First Look: 2008 Kawasaki KX250F

 Features and Benefits Engine – 249cc, liquid-cooled, four-stroke, four-valve, DOHC engine delivers hard-hitting power from mid- to high-rpm – Features improvements in rigidity and reliability – Wide powerband for excellent low-rpm torque and blistering over-rev Top End – Polished intake ports for an extremely-smooth surface that improves intake flow at every rpm – Ultra-light thin-stem titanium valves feature thick skirts and extended guides for maximum durability – New head gasket offers better se…

First Look: 2008 Kawasaki KX450F

 Features and Benefits Engine – 449cc liquid-cooled, DOHC, four-stroke single with lightweight, oxidized membrane treated titanium valves – High-acceleration cams help the engine rev quickly – Revised piston-cooling oil jet – Fifth bolt added to oil pump cover for improved sealing – Dual overhead, lightweight camshafts feature a soft-nitride surface treatment for long wear and high-rpm reliability – Special coating on the intake ports improve intake efficiency at all rpm – Titanium 36mm intake and 3…

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 to the hard-core loyalty of two-stroke fans. Kawasaki doesn’t want to abandon riders who are looking for a low-cost, easy-to-maintain, lightweight and snappy race machine. That list of attributes can only be applied to a two-stroke. By comparison, four-strokes are hig…

2007 KAWASAKI KX250F INFORMATION

(press release) Kawasaki’s all-new four-stroke KX?250F rose to the top to become one of last years best motocross bikes. For 2007, Kawasaki improves the championship winning KX250F with a host of engine and chassis modifications designed to extend its performance advantage. Side view of the 2007 KX250FSide view of the 2007 KX250FSide view of the 2007 KX250FSide view of the 2007 KX250FSide view of the 2007 KX250F Side view of the 2007 KX250F Refinements to Kawasaki’s highly acclaimed KX250F make it an eve…

WE RIDE BILL’S PIPES/RACE TECH KAWASAKI KX250F

  WE WANTED TO TAKE A STOCK KX250F AND BUILD IT INTO SOMETHING THAT WOULD APPROACH KILLER STATUS WITHOUT ACTUALLY KILLING OUR WALLET OR EGO. The 2006 Kawasaki KX250F is the MXA test crew’s 250cc four-stroke of the yearand deservingly so. It has a great engine, solid aluminum frame, good Showa suspension, trusty Renthal handlebars, comfy ergonomics and acceptable weight. The question on every KX250F rider’s mind is, how do you build on the best 250F of the year? The answer? You make it as fast as po…

WE RIDE MAXPOWER/RPM’S BIG-BORE KX315

    WITH TODAY’S METALLURGICAL CONFIGURATIONS, IT IS POSSIBLE TO MAKE AN ENGINE PRODUCE MORE POWER, ACCELERATION, SPEED AND SENSATIONS THAN THE HUMAN MIND CAN PROCESS OR HUMAN BODY MANAGE.             Formula 1 race car designers, from as far back as Colin Chapman, have understood that there is a delicate balance between weight and power. In truth, the never-ending pursuit of power has pretty much ended, and if it weren’t for computer mana…

MXA PRODUCT TEST: PRO CIRCUIT KX450F LINKAGE AND REVALVE

WHAT IS IT? An aftermarket shock linkage and shock revalve for the 2006 Kawasaki KX450F that alters the rising rate, lowers the seat height and mitigates bottoming.
WHAT’S IT COST? $184.95 (linkage), $149.95 (shock revalve) and $7.95 (shock oil)(951) 738-8050. www.procircuit.com     WHAT’S IT DO? Every MXA test rider has concerns about the rear suspension of the 2006 KX450F. In stock trim, it wallows (sways under acceleration), bottoms (so hard that it can break the rear fe…

NEW BIKES: 2007 KAWASAKIS

  KX250F Kawasaki’s all-new four-stroke KX250F rose to the top to become one of last years best motocross bikes. For 2007, Kawasaki improves the championship-winning KX250F with a host of engine and chassis modifications designed to extend its performance advantage. Refinements to Kawasaki’s highly acclaimed KX250F make it an even more potent track weapon. The newest KX250F keeps the outstanding top-end power from last year’s bike, but adds a stronger pull from the bottom of its rev range. The upgr…

MXA’S 2006 KX250F TEST

What a difference a year makes. After spending all of 2004 and 2005 on what were essentially clone machines, Kawasaki and Suzuki decided to go their separate ways in 2006. It isn’t a divorce of equals, though. Kawasaki’s divorce lawyer was better than Suzuki’s. How so? Suzuki will be selling the same-old 2005 RM-Z250 (with a few engine improvements), while Kawasaki dealers will get all of the engine improvements, along with a new aluminum perimeter frame, Showa suspension (front and rear), Renthal handl…

MXA’S 2006 KAWASAKI KX450F TEST

One of the inherent problems with jumping on the bandwagon last is that almost everything that could be done has been done. The 450cc four-stroke technological hay wagon was almost around the bend before Kawasaki leapt on board. It’s been eight years since Yamaha single-handedly invented the modern four-stroke motocross bike in 1998. KTM got there five years ago, Honda four years ago, and Suzuki last year. Kawasaki is late to the party.   The downside of being last is that there are very few techni…

2006 KAWASAKI KX250F PRESS INTRODUCTION

After just leaving the pressroom for the introduction of the radically new 2006 Kawasaki KX250F, we must say that this bike looks extremely good on paper. For the past two years the green team has been trying to find themselves in a world chock full of 250 four-strokes, one in which Yamaha has ruled since they came to the plate. Kawasaki had produced a good bike, but Yamaha had a more potent engine and Honda had better handling. However, for 2006 Kawasaki made a few changes within the infrastructure of …

PRO-TEC INTRODUCES KICK-START LEVER FOR KXF/RM-Z250

    (Press Release)   The latest kick-starter lever from Pro-Tec is the new KXF/RMZ-250 quick start billet kick-starter lever. Shorter than the stock kick lever by 66mm, this increases engine kicking speed for quicker starts. Strong, light and quick starts make the new Pro-Tec kick-starter lever a must for all KXF/RMZ 250 four strokes. Machined from 7075-billet aluminum for strength and reliability. Also features a machined lever stop pad for foot peg contact. The retail price is $128.95 …

SEE THE 2006 KAWASAKIS. GUESS WHICH ONE IS MISSING?

Today is the day to be a happy Kawasaki owner. Not only does Kawasaki release info on their complete 2006 line-up they do so in style with two almost completely brand new models. There is a bit of sad news for all you two-stroke holdouts though, Kawasaki in a move that will surely be followed […]

KXF/RMZ 250F 4-STROKE PISTONS

NOW AVAILABLE are the PRO-X 4-Stroke piston kits for both RMZ & KXF 250F models. NIKS PRO-X pistons are manufactured in Japan and are designed to be an O.E.M. replacement. The pistons are supplied in a Kit Package that includes rings, wrist pin and circlips. The KXF/RMZ250F PRO-X pistons feature the following:  The forged pistons are molded according to original specifications with performance upgrades to enhance reliability.  Aluminum Alloy maintains or exceeds factory specifications. &nb…

KX250F REPORT – KAWASAKI ENTERS THE MIX

Riding the Green Machine By John Basher Everyone has been waiting with baited breath at the arrival of the new arsenal of 250 four-strokes, whether it is from Honda or Kawazuki. Wait, what’s that again? Kawazuki? Unless you’ve been living under a rock in the deepest and darkest caverns of earth (in which case you’re pretty far out of the loop), Kawasaki and Suzuki formed an alliance two years ago. By now you should be familiar with the terms of agreement between the two motorcycle manufacturers, and it …

2004 KAWASAKI PHOTOS AND SPECS

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…

MXA’S SECRET JETTING SPECS, 2003 And Back

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…