I've always thought that this was a pretty elegant design.  The rear shock is housed inside the top tube which allows for a pretty conventional frame design.  The Rock Shox RS-1 has been painted to match and features the Boulder-made replacement brake arch.  Since the original brace was horribly flexible, this one had to be better.  In 1992, the Gazelle became the Defiant model but was basically unchanged other than the name.