Not only are we talking about a complete redesign of the 2012 KAWASAKI NINJA ZX-10R engine, frame, suspension, bodywork, instrumentation and wheels, but a highly advanced and customizable electronic system that helps riders harness and capitalize on the new ZX-10R’s amazing blend of power and responsive handling. The system is called Sport-Kawasaki Traction Control, or S-KTRC. It represents a whole new dimension in motorcycle performance, and the KAWASAKI NINJA ZX-10R is the only production sport bike that can take you there.
Motorcyclists have forever been challenged by traction-related issues, whether on dirt, street or track. Riders that can keep a rear tire from spinning excessively or sliding unpredictably are both faster and safer, a tough combination to beat on the racetrack. And when talking about the absolute leading edge of open-class sport bike technology, where production street bikes are actually more capable than full-on race bikes from just a couple years ago, more consistent traction and enhanced confidence is a major plus.
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| 2012 Kawasaki Ninja 10R |
The MotoGP-derived S-KTRC system works by crunching numbers from a variety of parameters and sensors – wheel speed and slip, engine rpm, throttle position, acceleration, etc. There’s more data gathering and analysis going on here than on any other Kawasaki in history, and it’s all in the name of helping racers inch closer to the elusive “edge” of maximum traction than ever before. The S-KTRC system relies on complex software buried in the new ZX-10R’s Electronic Control Unit (ECU), the only additional hardware is the lightweight speed sensors located on each wheel.
Unlike the KTRC system on Kawasaki’s Concours 14 ABS sport tourer, which primarily minimizes wheel slip on slick or broken surfaces as a safety feature, the S-KTRC system is designed to maximize performance by using complex analysis to predict when traction conditions are about to become unfavorable. By quickly, but subtly reducing power just before the amount of slippage exceeds the optimal traction zone, the system – which processes every data point 200 times per second – maintains the optimum level of tire grip to maximize forward motion. The result is significantly better lap times and enhanced rider confidence –exactly what one needs when piloting a machine of this caliber.
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| 2012 Kawasaki Ninja 10R |
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| 2012 Kawasaki Ninja 10R |
The system also incorporates an advanced Power Mode system that allows riders to choose the amount of power – and the character of delivery available from the engine. Besides the standard Full-power mode are Medium and Low settings. In Medium mode, performance varies according to throttle position and engine rpm; at anything less than 50 percent throttle opening, performance is essentially the same as in Low mode; at more than 50 percent, riders can access additional engine performance. All three S-KTRC settings are available in each of the three Power Mode settings.
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| 2012 Kawasaki Ninja 10R |
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| 2012 Kawasaki Ninja 10R |
A primary goal of Kawasaki engineers was linear power delivery and engine manageability throughout all elements of a corner: the entry, getting back to neutral throttle at mid-corner, and heady, controllable acceleration at the exit. Peak torque was moved to a higher rpm range, which eliminates the power peaks and valleys that make it difficult for racers and track-day riders to open the throttle with confidence.
Larger intake valves (31mm vs. 30mm), wider and polished intake ports, and completely revised exhaust porting all allow better breathing, more controllable power delivery and less engine braking, just the thing to smooth those racetrack corner entries and exits. Higher-lift camshafts built from lighter-yet-stronger chromoly steel (instead of cast iron) and featuring revised overlap further contribute to optimized engine braking and more controllable power delivery. Newly designed lightweight pistons feature shorter skirts and mount to lighter and stronger connecting rods, each of which spin a revised crankshaft made of a harder material and featuring stronger pins and journal fillets. Compression moves to a full 13.0:1.
There’s more, including a totally revamped crankshaft/transmission shaft layout that contributes to a higher center of mass and improved handling via better mass centralization – by locating the crankshaft approximately 10 degrees higher relative to the output shaft. There’s even a secondary engine balancer assembly this year, which allows a number of vibration-damping parts to be simplified, contributing to weight savings. A smaller and dramatically lighter battery helps drop even more weight, as does a lighter ECU and fuel pump.
A race-style cassette transmission allows simple trackside ratio changes and offers a host of improvements for 2012. These include closer spacing for 4th, 5th and 6th gears and the fine-tuning of the primary and final reduction ratios for less squat/lift during acceleration and deceleration, which allows more precise suspension tuning in back. An adjustable back-torque limiting clutch assembly is fitted, which allows worry-free downshifts and an even higher level of corner-entry calmness.
2012 Kawasaki Ninja ZX-10R is a Horizontal Back-Link suspension design that positions the shock and linkage above the swingarm. Benefits include better mass centralization, improved road holding, compliance and stability, smoother action in the mid-stroke (even with firmer settings), better overall feedback and cooler running. The design also frees space previously taken by the linkage assembly below the swingarm, space now used for the exhaust pre-chamber, which allows a shorter muffler and, again, better mass centralization. The fully adjustable shock features a piggyback reservoir and dual-range (low- and high-speed) compression damping.
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