Well, I figured with so many folks riding so many different steeds and browsing various motorcycle literature, we should be able to get some opinions on the subject. So, what do you think about this? Who makes the best motors? Is it Yamaha who seems to make techno-erotica on two wheels? Is it Suzuki who manages to vicious power and sportbikes to match? Is it Kawasaki who seems to make the most underrated motors of all...some of which are truly incredible and set the standard a good notch or two higher. Is it Honda who seems to build the most technologically inovative stuff...simply to prove that they can? My vote goes to Kawasaki. The 636cc motor from the ZX6R was simply a monster. Nevermind that it had a slight displacement advantage. It was bar none, the most powerful, the most usable and the meanest motor of the bunch. This beast would make small children cry. The mill from the ZX-10 is STILL, the best of the bunch. Yamaha claimed some ungodly 175hp from its R1 and was more or less embarassed when dyno's proved them wrong and they were relegated to the back of the pack. The ZX-10 took on all comers and its compact size and immense power made it a wicked weapon to have between your legs. I've got two more that will undoubtedly make others wonder what I'm smoking. 1. The 500cc twin in the Ninja 500R. Its small, its light, it makes OK power...and its almost 20 years old!!! This mill is STILL dealing with city streets and nightmare freeways. Its smooth competent power gives rookies a fighting chance at not turning themselves into human jelly and still gives more expierienced riders a lightweight thrill. Great motor that may be going away soon. 2. The motor that lost the speed wars on a technicality. Yes, the mighty lump from the ZX12R. Magazine jockies will quickly point out that the 1300cc mill from the Busa is larger and the bike faster than the ZX12R. While this is true, Kawi also limited it so that it could still sell them in Europe. The countries placed a 300kph (186mph) cap on bikes. Kawi couldn't afford to give up market share. Suzuki could wait it out. I'd like to point out that for 2005 the ZX12R was the fastest bike in the world yet again with Suzi-K limiting its own Busa in an attempt to regain buyers in various countries. The ZX12R was a victim of rules. I believe that the motor is an untapped monster that will STILL outshine its counterpart from Hamamatsu. There are a couple I'm forgetting like the ZX9R's motor that outshined Honda all the way through the range from 900 to 929 to 954. Or the hefty ZX7R that embarassed Suzuki enough to make it take a balls-out approach to the gixxer 750 just to say they won a horsepower war with a ten year old bike. Kawasaki makes the best motors. what say ye to that?