…slightly larger displacement engine for added mid-range punch which provide a more enjoyable ride on the street and racetrack. 2013 Kawasaki Ninja ZX-6R Specs Engine: Liquid-cooled 636cc Inline-Four, 16-valves Bore and Stroke: 67.0 x 45.1mm Compression Ratio: 12.9.0:1 Fuel Delivery: Fuel-injection Clutch:…

…to 636cc. ( Center ) The extra mid-range power allows the rider to carry a higher gear through many corners. ( Bottom ) Both the European and U.S. spec ZX-6Rs are in the same state of engine tune for 2013. Many of the intake and exhaust components were also modified for improved efficiency. The fuel…

Two little pieces of safety wire was all it took to default the US version of the ZX6R to the throatier European ECU settings. The aluminum piece to the left of the picture is what governs the operation of the exhaust powervalve, shutting at high revs with the American ECU. Unless you have a turbo Hayabusa…

…cheater,"" says Becklin, ""but it's a fun cheater."" Share your thoughts on the 2005 Supersport Shootout in the MCUSA Forum. Click Here Check out the "" Specs ."" for the2005 Supersports. Recent Sportbike Motorcycle Reviews Related Articles 2005 Kawasaki ZX-6R - First Ride 2005 Honda CBR600RR - First Ride…

…Although Kawasaki claims maximum power output to have increased it felt comparable to the 2008-2010 Ninja. Kawasaki did note that in stock form the U.S. spec ZX-10Rs are fairly restricted. To prove this they had a ""Power Up"" bike with a racing exhaust and different ECU and it did feel considerably faster…

…accelerating into Turn 7 - demonstrating just how much ground clearance the bike has. As you exit, the rear end gently squirms, signaling that the race-spec Bridgestone BT-003 rubber is looking for grip. Still leaned over, grab an upshift before diving into Turn 8/9. You're fully cranked on your side as…

…of discussion is the allowance of Aprilia's RSV1000R and Buell's 1125R in the new Daytona SportBike class, racing against the likes of supersport-spec 600s. A couple hundred extra cc for a V-Twin over an Inline-Four is one thing, but is it really fair to let them have almost double the displacement?…

…It's taller and wider, though just fractionally, and it's longer by 1.6 inch. And the new bike must've been born shortly after Thanksgiving, as the specs say it weighs 6 lbs more than last year. If true, it would put the ZX's weight at about 402 lbs with its tank empty. That's still lighter than Suzuki's…

…enough to separate the ZX from this group, it also comes with another tool exclusive to this quartet: a slipper clutch. Borrowed from last year's race-spec ZX-6RR, the back-torque-limiting device was nearly as dominant in pit-side conversations as the mega motor. The trick clutch aids not only multiple…

" It was no surprise the V-Twin of the Ducati 749 produced the most torque. The ZX-6R has the widest powerband of the bunch. Indeed, Kawasaki engineers deserve credit for thinking outside the 600cc box. There's virtually no place in the powerband that any of the other 600s make more horsepower,…