|Parent company||Kawasaki Heavy Industries|
|Engine||1,089 cc, 4-stroke, transverse 4-cylinder, air-cooled, DOHC, 2 valve per cylinder|
|Bore / stroke||72.5 mm × 66.0 mm (2.85 in × 2.60 in)|
|Top speed||217 km/h (135 mph)|
|Power||105–109 hp (78–81 kW) @ 8,500 rpm (claimed) |
67 kW (90 hp) (rear wheel)
|Torque||95.19 N⋅m (70.21 lbf⋅ft) @ 7,000 rpm|
|Suspension||Front - Telescoping fork |
Rear - Dual shock
|Brakes||Dual disc (front) |
Single disc (rear)
|Wheelbase||1,540 mm (60.6 inch)|
|Dimensions||L: 2,265 mm (89.2 inch)|
W: 785 mm (30.9 inch)
|Seat height||30.708 inch (780 mm)|
|Weight||250 kg (550 lb) (wet)|
|Fuel capacity||21.6 L (4.8 imp gal; 5.7 US gal)|
The Kawasaki GPz1100 B1 and B2 are motorcycles that were manufactured by Kawasaki in 1981 and 1982 respectively. Both models featured a four-cylinder, two-valve air-cooled engine design with a capacity of 1,089 cc. This engine was an evolution of the powerplant used in the previous Kz1000 series, itself descended from the Z1. In 1983 the GPz1100 was completely revamped in both cosmetic styling, suspension and updated engine. The model number changed to ZX1100A1.
This section may contain an excessive amount of intricate detail that may interest only a particular audience.(June 2019)
Cosmetically, both the B1 and B2 were released in a bright red paint called "Firecracker Red", the B2 was also available in a gold colour called "Sonic Gold". The red colour theme was a departure from early colour schemes and started the marketing campaign called the "Red Revolution" featuring the 1100, 900, 750 and 550 models.
The B1 had conventional 7/8" handlebars as found on all earlier Kawasaki "Z" series bikes, the B2 had clip on style handlebars that mounted to the top of the fork tube above the top triple clamp, this style then featured on the later ZX1100A models. This style was to continue to be the norm for most sports bikes, especially the Kawasaki GPZ900R series released in 1984.
The Instruments on the B1 used bulbs for all warning lights and featured a speedometer, tachometer, fuel gauge and voltage meter. The B2 instrument panel feature the speedometer and tachometer but the fuel gauge and most of the warning indicators were replaced with an LCD. The design change also changed the wiring harness and a number of electrical connectors in the front of the motorcycle changed. The speedometer on the B1 is electronic while the B2 is cable driven. The transducer appears to generate a pulse train that is converted to a voltage to feed the speedo meter.
The front disks of the B1 are 10 mm smaller in diameter and 1 mm thinner than the B2, the front calipers are also different but the disk brake pads are the same. The rear disks are identical in both models.
The front forks are slightly different between the two models. Both models feature air assistance, but the B1 model uses an air valve located at the top of the fork leg while the B2 uses an equaliser tube linking the two tube with a single air valve. By using an equaliser tube, each inner fork tube requires a small hole to allow the air in. The lower legs are different as the different brake disk diameter used on the two models require the mounting points to be different.
The B1 and B2 models both featured Fuel Injection manufactured by Japan Electronic Control Systems (JECS). However the 2 systems are quite different in fuel system management. The B1 model used the EFI system, where the B2 model used the later DFI system, which is a fully digitised form of electronic fuel injection. The EFI system used on the B1 model was built under licence from Bosch and is essentially a copy of the Bosch L-Jetronic fuel injection system used on many motor vehicles in the late 70's and early 80's including Nissan vehicles.The B1 model fuel injection system is very similar to the 1980 Z1000H (Limited Edition model, only 1000 made by the Kawasaki factory) and also used in the 1980 US-only Z1000G model).
This fuel injection system is a very simple analogue design that uses an air flow meter to determine engine air flow. The ECU then controls the amount of time that the fuel injectors remain open based on the signal received from the air-flow meter. This style of analogue fuel injection only has a limited number of engine management sensors, including engine temperature, incoming air temperature, engine RPM, engine air-flow and throttle position. The B1 model uses an air-flow meter that is approximately 10% larger than the Z1000H air flow meter, to provide more air flow to the larger capacity motor. Later models (B2 and ZX1100A)featured DFI (digital) fuel injection - this style of DFI uses a variable TPS which more accurately represents the throttle position than the earlier EFI, for sending signals to the ECU. The algorithm used in the B2 and ZX1100A models is Alpha-N. The DFI models also used a limited number of engine inputs for fuel system management. While the DFI system used on the later models is technically better than the earlier EFI system, the earlier fuel injection systems provide a more direct throttle response as the ECU is responding to actual air-flow through the motor, not to a pre-determined fuel map based mainly on throttle position alone.
On the B1 model (as per the Z1000H and Z1000G models), the four fuel injectors are mounted directly into the cylinder head above the inlet ports (hence the EFI system was referred to as port injection), while the B2/A (DFI) model had the more common Throttle Body Injection (TBI) where the injectors are mounted into the throttle bodies. With different throttle bodies comes a very slight difference in the air box mounting. The intake rubbers on the B1 are smaller than the B2 but a throttle body swap is possible by simply replacing the inlet rubbers.
The fuel level sender units are physically different between the two models, this could be due to the different methods used to report the fuel level (B1–gauge, B2–LCD). The B1 model has a fuel sender with a round tank mounting, the B2 has a rectangular mounting plate, therefore the tanks are different also. The DFI and EFI fuel delivery hardware is the same for all models from Z1000H through to ZX1100A models. The 1983 model also uses the same fuel pump and throttle bodies as the B2. The diameter of the throttle-bodies on all fuel-injected Kawasaki models is the same, at 36mm.
The B2 model featured a bikini fairing. This resulted in a change in a number of cosmetic covers and the addition of extra mounting brackets. Because of the bikini fairing, the headlight assembly is slightly different between the two models. The frames are basically the same with a few subtle differences in the fasteners used.
The tail light of the B2 features a reflector on each side of the rear lens. The internals of the lens are also different between the two models. The tail light lens feature identical mounting, so they can be interchanged. The B1 was only released in 1981 and the B2 in 1982, after that, the dual shock 1100 models ended and the monoshock GPz1100(ZX1100-A1) were released.
The Kawasaki Ninja ZX-12R is a motorcycle in the Ninja sport bike series made by Kawasaki from 2000 through 2006. The 1,199 cc (73.2 cu in) inline-four engine produced 178 hp (133 kW) at low speed, and increased to 190 hp (140 kW) at high speed due to its ram-air intake, making it the most powerful production motorcycle up to 2006 and the release of the ZX-14. It was a contender to be the fastest production motorcycle, and played a role in bringing to a truce the escalating competition to build an ever-faster motorcycle. Its top speed was electronically limited to 186 mph (300 km/h), tying it with the Suzuki Hayabusa and Kawasaki Ninja ZX-14 as the fastest production motorcycle on the market, after the 303–312 km/h (188–194 mph) 1999 Hayabusa was replaced with a speed-limited version as part of a gentlemen's agreement between motorcycle manufacturers that lasted until the 298–311 km/h (185.4–193.24 mph) 2007 MV Agusta F4 R 312.
The Kawasaki GPZ900R is a motorcycle that was manufactured by Kawasaki from 1984 to 2003. It is the earliest member of the Ninja family of sport bikes. The 1984 GPZ900R was a revolutionary design that became the immediate predecessor of the modern-day sport bike. Developed in secret over six years, it was Kawasaki's and the world's first 16-valve liquid-cooled inline four-cylinder motorcycle engine.
The Kawasaki Z500/Z550 series began with the 1979 Z500, a scaled-down version of the Kawasaki Z1R. It used a double-cradle steel frame with a transverse-mounted air-cooled 4-cylinder DOHC engine—a classic Universal Japanese Motorcycle.
A ram-air intake is any intake design which uses the dynamic air pressure created by vehicle motion, or ram pressure, to increase the static air pressure inside of the intake manifold on an internal combustion engine, thus allowing a greater massflow through the engine and hence increasing engine power.
Jetronic is a trade name of a manifold injection technology for automotive petrol engines, developed and marketed by Robert Bosch GmbH from the 1960s onwards. Bosch licensed the concept to many automobile manufacturers. There are several variations of the technology offering technological development and refinement.
The Kawasaki Ninja ZX-6R is a 600 cc class motorcycle in the Ninja sport bike series from the Japanese manufacturer Kawasaki. It was introduced in 1995, and has been constantly updated throughout the years in response to new products from Honda, Suzuki, and Yamaha. The ZX series is what was known as the Ninja line of Kawasaki motorcycles in the 1980s and still carries the name today.
The Kawasaki Zephyr is a range of retro-styled naked superbikes made in the 1990s in Kawasaki's Z series. All models have transverse air-cooled dual overhead camshaft inline-four engines. There were a number of Zephyr models, in four engine capacities, 400, 550, 750, and 1,100 cc.
The Suzuki GSX-R1000 is a sports motorcycle made by Suzuki. It was introduced in 2001 to replace the GSX-R1100 and is powered by a liquid-cooled 999 cc (61.0 cu in) inline four-cylinder, four-stroke engine although originally 988 cc (60.3 cu in) from 2001 to 2004.
The Kawasaki Eliminator is a cruiser-type motorcycle that has been produced in several variants since its introduction in 1985 as the 900 Eliminator. Currently billed as a "power cruiser", the first two versions of the bike, namely the 1985 Eliminator and 1986 ZL900 models, were almost street replicas of a drag style bike, featuring shaft drive, the ZX900 close-ratio gearbox and forward seating. The engine for both of these machines was the same motor available in the 900ccm Ninja of the same year, albeit with different exhaust and intake configurations.
The Kawasaki Z1000 is a four-cylinder motorcycle introduced in 2003 with streetfighter or standard styling. The Z1000 was first introduced in 1977 superseding the previous 903 cc capacity Z1/Z900.
The Kawasaki Z1 is a four-cylinder, air-cooled, double-overhead camshaft, carbureted, chain-drive motorcycle introduced in 1972 by Kawasaki. Following the introduction of Honda's CB750 in 1968, the Z1 helped popularize the in-line, across-the-frame four-cylinder, a format that became known as the Universal Japanese Motorcycle or UJM.
The Kawasaki Z1300 is a standard motorcycle unusual for its large-displacement 1,300 cc straight-six engine made by Kawasaki from 1979 to 1989.
The Kawasaki Ninja is a name given to several series of Kawasaki sport bikes that started with the 1984 GPZ900R. Kawasaki Heavy Industries trademarked a version of the word Ninja in the form of a wordmark, a stylised script, for use on "motorcycles and spare parts thereof".
The Kawasaki Ninja ZX-9R is a motorcycle in the Ninja sport bike series from Japanese manufacturer Kawasaki, produced from 1994 until 2003. There were five model incarnations across two basic designs.
The Kawasaki GPz750 Turbo was a sportbike manufactured from late 1983 to 1985, with two model years – the 1984 E1 and the 1985 E2. Differences were minor, a twin "push/pull" throttle cable for the E2 and different brake caliper stickers. The bike was manufactured in Japan, with parts also shipped to the US and assembled in Kawasaki's Nebraska plant for the US/Canada market to bypass the import tax levied on bikes over 700cc at the time by the US government, a protectionist move designed to save Harley-Davidson which was having financial problems at the time.
The Kawasaki Kz1000 or Z1000 is a motorcycle made in Japan by Kawasaki, manufacturing commenced in September 1976 for the 1977 model year. The Z1000A1 was an upgraded model to replace the 1976 Kawasaki KZ900 (Z900), which in turn replaced the Z1 launched in 1972 in the Z series. It has an inline-four cylinder engine and a 5-speed transmission, in a 'one down and four up' configuration. Producing about 90 hp, it was one of the fastest production motorcycles of the era. The police model continued in production until 2005.
The Kawasaki GPZ1000RX was a motorcycle made by Kawasaki from 1986 to 1988. It had a 997 cc (60.8 cu in) four-cylinder, 16-valve, twin cam engine.
The Kawasaki GPZ1100 is a motorcycle that was manufactured by Kawasaki from 1981 to 1985. All four models featured fuel injection and 1,089 cc engines. All were short lived and were an attempt to fill a market segment that was rapidly changing.
The Kawasaki GPZ1100ABS motorcycle, also labeled GPZ 1100 Horizont, was introduced in 1995. It was a sport touring motorcycle with more focus on touring than sports. Based on a ZZR-1100 motor without the ram air and detuned for more mid-range performance, it also had smaller carburetors and a more restrictive exhaust. The bike was more focused on being economical with budget brakes and suspension. Instead of the Ninjas ZX-11's alloy frame, the bike had a steel double cradle frame with a removable front member for engine removal. The motorcycle had a more relaxed seating position and leg position than the ZX-11D/ZZR-1100 or the air-cooled GPZ1100 of the early 1980s .The official Kawasaki designation was ZX1100E. It also was offered in 1996 as an ABS model.