Background
Launched in the early 80s, the GPz range of motorcycles from Kawasaki was a step into the Superbike world, with high-performance, four-stroke, air-cooled engines. Launched with the GPz1100, this gave Kawasaki the boost it needed to compete with its rivals Suzuki and Yamaha, both big players in the 70s-80s Superbike era.
What would become the first revision of the GPz1100 was the B1 which featured a cradle design frame with a new Z1000J engine which had been increased to 1,089cc and fitted with roller bearings. The engine also had a Bosch electronic fuel injection system that had been used on previous Z1000 models. This model was then further improved with the B2 edition. Again, there was an improved engine with a new digital fuel injection system and a black chrome finish instead of previously used paint. In addition, the suspension was improved to give better handling on the road and track by fitting stiffer springs, and damping and rebound rates increased.
1983 saw further improvements to the GPz, which would be the start of the A1 series. This new design would see the Kawasaki move to the Unitrak single suspension system with anti-dive units on the forks. There was also a bigger fairing to give a near-on-full race fairing effect. A year later, the A2 variant was launched; this time, a few cosmetic improvements and a new paint scheme would freshen up the looks, and the exhaust system would help with some performance gains.
The final would be this particular model in 1985, the A3 and which would turn out to be the last GPz variant as the sales from the smaller GPz900R had surpassed the GPz1100, bringing production of the 1100 to an end.








