2012 Kawasaki Ninja ZX-6R Best Lap

The 2012 Kawasaki Ninja ZX-6R carries that tradition of middleweight dominance to a staggering level (one that would’ve blown minds in 1985). And in today’s ultra-competitive 600 supersport market, where technology, racetrack success and streetbike acumen can change dramatically year by year, that’s saying a lot. Don’t believe us? Then ask the many top-level magazines and web sites that picked the current-spec ZX-6R as Best Middleweight. It was an absolutely dominating 600 shootout performance and one sure to be replicated in 2012 due to the ZX-6R’s track-honed DNA and seamless all-around capability.

2012 Kawasaki Ninja ZX-6R

That DNA begins with a 16-valve, DOHC inline-four engine that’s everything a top-shelf middleweight powerplant should be: supremely powerful, smooth, and blessed with hammer-like reliability. Critics everywhere agree the ZX-6R runs and performs like a larger-displacement motorcycle, and one that packs a rolling chassis that out-handles and out-suspends all others. It’s a perfect combination for street riders, track day junkies and racers alike, a flexibility that helps explain its many 600 comparo victories.

It all starts with the ZX-6R’s jewel-like engine, a 599cc assemblage of everything Kawasaki knows about powerplant building, and the result of untold hours of testing and refinement garnered from dyno room to racetrack and back again. Squeezing big power from small displacement has been a Kawasaki forte for many years, from the 350cc A7 Avenger to the 500cc H1, and from that first Ninja 600 to this latest ZX-6R, class leading power is a Kawasaki sportbike birthright.

2012 Kawasaki Ninja ZX-6R

2012 Kawasaki Ninja ZX-6R

And there’s more than peaky top-end power, too. The engine’s dual cams, 16 valves, 13.3:1 compression and 38mm throttle bodies produce the sort of smooth low-end and mid-range power that make dealing with traffic, surface streets and everyday riding a much more agreeable affair. Add to that superb throttle response and liquid-smooth control feel and you have a supersport motorcycle with commuting manners that easily match its phenomenal racetrack prowess.

Much of this smooth, rheostat-like power delivery is achieved through outstanding combustion efficiency. Cylindrical guides in the top of the airbox guide the fuel charge into the intake funnels directly to reduce buffeting and improve cylinder filling. Advanced cylinder head porting slams the air/fuel charge into and out of the combustion chamber post-haste, while high-current secondaries in the ignition coils provide hot, consistent spark at all rpm for maximum combustion impact. The engine’s mid-range performance also benefits from double-bore velocity stacks with inlets at two different heights, special-profile pistons with low piston-ring tension for reduced friction, and advanced cam chain guides for the highest degree of cam-chain stabilization.

2012 Kawasaki Ninja ZX-6R

2012 Kawasaki Ninja ZX-6R Engine

This ultra-strong midrange power not only provides arm-stretching drive out of corners. It also offers unparalleled controllability and the sort of precise throttle control that pays big dividends when making mid-corner power adjustments while stringing a set of corners together on a snaky backroad or while negotiating that tricky set of turns at your favorite racetrack.

Kawasaki’s acclaimed triple petal disc brake package with radial-mount calipers up front  is as refined and powerful as ever. Highly rigid four-piston calipers and 300mm petal-type rotors provide awesome power and excellent feel at the front wheel. The 220mm rear petal-type disc features a pedal coaxially mounted with the footpeg for increased mid-stroke braking efficiency and optimum pedal feedback. Its master cylinder reservoir mounts forward of the swingarm, freeing space around the footpeg, reducing parts and contributing to weight savings. It all adds up to unflappable composure under braking, and helps provide the precise control and feel that allows supersport racers to enter corners harder – and everyday riders to slow things down comfortably and controllably.

2012 Kawasaki Ninja ZX-6R

• Lean physique, low mass, forceful power, controllable power delivery and precise overall control
• 599cc inline-four with DFI is lightweight yet powerful
• Fully adjustable front and rear suspension includes the Showa Big Piston Front fork (BPF), which offers fantastic wheel and chassis control
• Lightweight aluminum chassis places the engine in the ideal location for excellent handling and rider feedback
• Radial-mounted front brake calipers and radial-pump front brake master cylinder offer superb braking power and control
• Race-quality adjustable Öhlins steering damper comes standard
• Slipper-type back torque-limiting clutch offers quick downshifts without chassis agitation
• Named one of Cycle World magazine’s 10 best bikes

2012 Kawasaki Ninja ZX-6R Engine
• Camshafts are made of chrome-moly steel
• Lightweight magnesium engine covers are standard
• Lightweight top injector mounting plate
• Lightweight transmission gears and gear dogs
• Lightweight oil pump and starter gears
• Inlet pressure pulse monitor does away with cam angle sensor, further contributing to lightness
• Cassette-type transmission makes it easy to quickly swap gear ratios, reducing set-up time at the track