The Ninja 400 / Z400 have decent enough brakes for street use, with their 310mm floating front disc.  It’s larger in diameter than similar bikes like the Yamaha R3 (298mm).  The OEM pads have what seems to be the standard “OEM feel” for budget oriented bike, very wooden, lacking any substantial bite, and requiring a

The Kawasaki Ninja 400 and Z400 are awesome little bikes!  Kawasaki made some advancements to the little bike scene offering a 400cc package that was just as lightweight (or lighter) and nimble as other 250cc and 300cc bikes.  But like with anything that’s a brand new design, there are a few quirks that should be

*Keep in mind, these are only general recommendations for spring rates to get you close for your weight. Optimum spring rate is affected by countless variables including riding style, preference, pace, track layout and surface finish, and bike geometry and suspension setup.  Generally faster racers will prefer springs at the stiffer end of their range.

coming soon.

***Update 2024*** The Ninja 500 / Z500 is showing the same issues, as it’s the same components for the most part between the Ninja 400 and 500. Items that are different: clutch pull rod and bearing (updated in 2020 on the Ninja 400), and clutch springs. Our Ninja 500 Race Spec Clutch Kit has been

Like all stock bikes, the throttle throw on the Kawasaki Ninja 400 is painfully long, and requires twisting your arm to awkward angles to reach full throttle without re-gripping the throttle. Not only is this a nuisance, but it’s dangerously distracting while trying to ride. A quick and inexpensive way to shorten the throttle throw

I also needed to deliver a Yamaha R3 superbike to one of my friends and customers, Trisin Harris, for his first ride and put some laps on my own R3 superbike to dial in my new Penske shock. Tristin and our friend Alex getting ready, also last minute, of course! Also got to see a

***BE VERY CAREFUL REMOVING THE GAS TANK!!!!******THE FUEL PIPE ON THE THROTTLE BODIES IS VERY FRAGILE AND EASY TO BREAK AND THE FUEL HOSE IS VERY SHORT!!! Tools Required:10mm socketsmall pick tool to release wire connectors*I recommend having a buddy help you hold the fuel tank as you remove it the first time so you