Smoothness, Quietness & Enormous Power Recently serviced, new windshield, New fork seals, new battery.Ultimately, a redesigned Gold Wing made its debut at the 1987 Cologne Motorcycle Show, 13yrs after the original GL1000 was 1st shown to the public at the same venue, and the GL1500 brought the most changes seen to the Gold Wing series since its inception. The biggest difference was that the flat-four engine was replaced with a flat-six engine.[87] Although the GL1500 still pre-owned carburetors, there were just 2 large 36 mm CV Keihins supplying all 6 cylinders, the 1st time any Gold Wing had less than 1 carb per cylinder.[52] Honda also enclosed the entire motorcycle in plastic, giving it a seamless appearance. The seat height was lowest yet on a Gold Wing, the passenger backrest and trunk were integrated, and a central mechanism locked the trunk lid and saddlebags. Rear suspension air pressure was adjusted by an on-board compressor. 1 major innovation was the addition of a "reverse gear", which was actually a creative use of the automatic starter motor linked to the transmission.