– Motorcycle News, Editorials, Product Reviews and Bike Reviews

Motorcycle News, Editorials, Product Reviews and Bike Reviews

Kawasaki Gives 2008 Ninja ZX-14 More Power, Lower Emissions and Less Noise

When Kawasaki said it intended the ZX-14 to be the world’s most powerful production motorcycle, they weren’t kidding. Introduced just two years ago into a segment that traditionally features long gestation periods between significant updates, for 2008 the ZX-14 is already receiving significant engine changes. Driven at least in part by emissions and noise requirements, Kawasaki is also motivated by a certain new competitive machine to do what it takes to remain the top dog.

While they were at it, Kawasaki revised the ZX-14 chassis by substituting certain frame rails that were previously formed by gravity casting with new, lighter rails formed by die casting.

Here is some of Kawasaki’s press material concerning the 2008 ZX-14. Specifications are at the bottom. Note that three colors will be available in 2008.

Every champion knows sustained dominance is only possible with constant improvement. Such is the case with Kawasaki’s Ninja® ZX™-14. Since its debut in March of 2006, this motorcycle has ruled the open class sportbike roost with nearly non-stop magazine comparison victories. Even though the 1352cc Ninja ZX-14 won lavish praise for its massive torque, effortless power, agile handling and comfortable ergonomics, Kawasaki engineers were not willing to leave the door open to potential challengers.

The 2008 ZX-14 retains all the great features that made it a legend, plus more bottom, mid and top-end power. Changes to the engine and exhaust system allow it to comply with strict Euro-III emissions and tightening noise regulations. To meet noise standards, the engineers focused on reducing internal mechanical noise instead of muzzling the exhaust system. The result wasn’t a power loss, but an overall improvement of the engine character and an actual increase in the ZX-14’s legendary peak power! Yes, you read that correctly. Emissions and noise levels are lower, peak power is higher, the mid-range hit is stronger and smoother and low-end torque has been increased. A win-win solution for all, in our books.

To achieve those stringent emission levels, a third honeycomb catalyzer was added in the collector, joining the two honeycomb catalyzers already in each silencer. The secondary air ports in the cylinder head and its cover were made approximately 20 percent larger to permit an easier air flow into the exhaust system. A new Air Switching Valve (ASV) caps off the low emission updates and can handle approximately five percent more flow than the last year’s version.

Conquering the challenging Euro-III regulations is admirable, but Kawasaki took it to the next level on the ZX-14 with changes to its 1352cc engine which improve the power characteristics while meeting noise regulations. The injection system was first to receive attention in an effort to boost peak power, give a more linear mid-range and stronger low end torque with the same user-friendly personality. The fine-atomizing fuel injectors had their lateral spray angle increased from 15 to 20 degrees to disperse the atomized fuel over a wider area and the intake porting was revised to provide optimum flow characteristics. Outside of the engine, the exhaust silencers feature refinements to the capacity of the first and third chambers and the lengths of the pipes projecting from the baffle plates have been adjusted. Next the entrances to the connecting tubes (joining header pipes 1-4 and 2-3) were enlarged approximately 75 percent to compensate for the new collector shape, which was altered to allow the inclusion of a third honeycomb catalyzer. These changes were a major component of the enhanced the torque characteristics, especially in the low rpm range.

Reducing internal mechanical noise allowed for the engineers to employ comparatively little exhaust modification to meet noise mandates and consequently the exhaust system could remain free flowing for greater power. Lower mechanical noise was attained by revising the piston profiles and adding a urethane insulation sheet to the inside of the magnesium chain cover.

The engine and exhaust system weren’t the only areas updated for 2008. The ZX-14’s chassis design is every bit the equal of its power plant. Using an advanced version of Kawasaki’s unique aluminum monocoque design, its frame is lightweight and very strong. Switching to die instead of gravity casting for the cast aluminum sections of the main frame resulted in lighter parts, allowing the Kawasaki engineers to shave weight on the already slim and compact frame.

Featuring a relaxed sport riding position, the ZX-14 is compact without being cramped, with its bars positioned within easy reach. The narrow engine, monocoque frame, and fuel tank provide a slim rider interface. Footpegs are low-set to give ample legroom and the low seat height and narrow seat front make it easy to plant both feet on the ground when stopped. Comfort levels are high enough that riders might think they’re on a dedicated sport tourer, but one twist of the ZX-14’s throttle is all it takes to remind anyone this is the world’s quickest and most powerful production motorcycle.

Uninterrupted fairing lines give the ZX-14 a smooth, flowing appearance from front to rear due in part to the monocoque frame that goes over the engine and doesn’t protrude through the cowling. Quadruple projector beam headlights adorn the ZX-14’s front, with low beams in the two center lenses and the outer lenses containing the high beams and position lamps. The turn signals are cleanly integrated into the fairing and rear cowl with a unique “V” design LED tail lamp capping off the sleek aerodynamics of the ZX-14 that reinforces Kawasaki’s aircraft heritage.

This blending of form, power, and handling characteristics yields a motorcycle with appeal that extends far outside of its high performance audience. The Ninja ZX-14 lives up to its Ninja heritage, by surpassing the competition.

2008 Kawasaki Ninja® ZX™-14 Specifications*

  • Engine: Four-stroke, liquid-cooled, DOHC, four valve per cylinder, inline-four
  • Displacement: 1,352cc
  • Bore x stroke: 84.0 x 61.0mm
  • Maximum torque: 113.5 lb-ft @ 7,500 rpm
  • Compression ratio: 12.0:1
  • Fuel Injection: DFI® with 44mm Mikuni throttle bodies (4)
  • Ignition: TCBI with Digital Advance
  • Transmission: Six speed
  • Final drive: X-Ring chain
  • Rake / trail: 23 degrees / 94 mm
  • Front Tire: 120/70 ZR17
  • Rear Tire: 190/50 ZR17
  • Wheelbase: 57.5 in.
  • Front suspension / wheel travel: 43mm inverted cartridge fork with adjustable preload, 13-way compression and 11-way rebound damping adjustment / 4.6 in.
  • Rear suspension / wheel travel: Bottom-Link Uni-Trak® and gas-charged shock with adjustable preload, stepless rebound and compression damping adjustments, adjustable ride height / 4.8 in.
  • Front Brakes: Dual semi-floating 310 mm petal discs with dual radial-mounted four-piston calipers
  • Rear Brakes: Single 250mm petal disc with twin-piston caliper
  • Overall length: 85.4 in.
  • Overall width: 29.9 in.
  • Overall height: 46.1 in.
  • Ground clearance: 4.9 in.
  • Seat height: 31.5 in.
  • Dry weight: 485 lbs.
  • Fuel capacity: 5.8 gal.
  • Color: Metallic Midnight Sapphire Blue,
  • Atomic Silver,
  • Special Edition: Metallic Flat Spark Black / Metallic Persimmon Red
  • MSRP standard / Special Edition: $11,699 / $11,999
  • Warranty: 12 Months
  • Wholesale distributor: Kawasaki Motors Corp., U.S.A.
    9950 Jeronimo Road
    Irvine, California 92618
    (949) 770-0400

*Specifications are subject to change.