Clear tailight lenses are available for the older style GS500 but not for the newer
style. On a recent ride I came across a 98 HONDA cbr1100xx (Blackbird in the UK) and noticed the taillight looks
very similar to the gs500. Upon closer examination and measurement I can say with certainty that this will fit 2001+ GS500.
It appears to be the exact same lens, same shape, same mounting locations, etc, only set into bodywork of cbr much more than
on GS.
It is NOT a direct fit. They DO look identical though. Differences are the
cbr1100 lens is shorter front to back by about 3/8" and mounting holes are slightly wider than GS holes. The overall shape
of the mating surface, where it mates to the brake housing is identical though.