("Full-Floater"), disc brakes at both ends, a fuel gauge and digital gear indicator. More significantly, the 83 GSX750 was Suzuki's first mass appeal motorcycle to sport a 16" front wheel in place of the previous models 19" wheel. The 16" wheel making its production debut on a Suzuki with the GS650 Turbo. The 16" front wheel was a development used in early to mid 1980s 500cc GP motorcycles at the time to quicken steering at high speeds by reducing the gyroscopic effect and shortening/widening the front tyre contact patch. On the road the 16" wheel proved unpopular and quickly fell out of favour due to its instability on bumpy road surfaces. In 1984 the U.S. market received the GS 700 - a bike with a de-stroked engine and minor cosmetic differences due to the imposition by the U.S. Government of a 50% tariff on all imported motorcycles displacing more than 700cc (repealed in 1988). All other markets continued to receive 750cc models. Modifications in 700cc guise included taller pistons and slightly differing cam lift and timing. This plus a change in factory gear ratios enabled Suzuki to produce a US-only motorcycle with near-identical performance specifications to the GSX 750ES, even though engine displacement was 15 per cent smaller. The 50 per cent tariff was the reason behind the glut of de-stroked 650 cc and 700 cc Japanese motorcycles sold in the US in the mid-1980s - unique to the U.S. - and is also the reason the GSX-R debuted in the U.S. a full year later than the rest of the world. It was available as the naked GS 700E and as the GS 700ES with bikini fairing. Outside the US market the GSX 750S Katana was completely restyled in 1984 sharing the same engine and 16" front wheel chassis of the ES. 1984 also saw the release of completely new GSX-R 750 signaled a new direction of race-replica sport bikes. The GSX range being relegated from the role of flag-ship models in the Suzuki range. 1984 also saw an update in color schemes for the GSX 750ES in the rest of the world, with the naked "E" being dropped in favor of the half-faired "ES" and a new "EF" model with full upper and lower sport fairings (never available as a factory option in the US). The GSX 750E lived on for a few more years, but was eventually