Kawasaki GPz1100B2
| Manufacturer | Kawasaki |
|---|---|
| Also called | KZ1100B(GP) |
| Parent company | Kawasaki Heavy Industries |
| Production | 1981–1982 |
| Predecessor | Kawasaki Z900/1000 |
| Class | Sport bike |
| 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) |
| Power | 109 hp (81 kW) @ 8,500 rpm |
| Torque | 95.19 N·m (70.21 lbf·ft) @ 7,000 rpm |
| Ignition type | Electronic |
| Transmission | 5-speed |
| Frame type | steel |
| Suspension | Front - Telescoping fork Rear - 1981-1982 Dual shock 1983 on - Uni-Trac single shock suspension with aluminum swingarm |
| Brakes | Dual disc (front) Single disc (rear) |
| Tires | Tubeless 110/90-18 (front) 130/90-18 (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 | n/a (dry) 236.0 kg (520.3 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 producing 108 bhp (81 kW) in the B1 and 109 bhp (81 kW) in the B2. 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.
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.
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