In 1983 Honda was facing a challenge in the marketplace from a new full-dress tourer, the Yamaha Venture XVZ 1200 with its DOHC four valve per cylinder V4 engine (as Yamaha's XS Eleven Venturer had challenged the GL1100 two years earlier). Honda hit back at the Milan motorcycle show late that year by announcing a new 1984 Gold Wing that pushed its four-cylinder engine design to its limits. The bored and stroked boxer produced more power and torque; a new final drive ratio gave the GL1200 taller gearing in order to reduce noise and vibration. The four Keihin 32 mm CV carburetors were larger than those on the GL1100 engine, on the other hand, they were the same size as the '75–'76 GL1000 carbs. Incorporating hydraulic actuation for the clutch, in addition to hydraulic tappets for the valves, made the new engine virtually maintenance-free. In order to make the Gold Wing more nimble, front and rear wheel diameters contracted (and tire widths expanded) one more time. The GL1200 was built on a new, stronger frame and despite all the improvements, the claimed dry weight of the naked bike remained unchanged at for the 1984 model year.