In line with their process of continual improvement, SunTour took the SunTour V series and upgraded the parallelogram plates from steel to aluminium - the result is the 1973 SunTour V Luxe series.
As well as making the derailleur slightly lighter, this upgrade also had the effect of uprating to V series to be all aluminium (like the super expensive Shimano Crane) and a step ahead of the comparably priced Shimano Titlist (which had steel pulley cage plates). In the 1970’s intense competition between SunTour and Shimano was improving the derailleur so fast that European manufacturers did not know what had hit them.
This example is the V T Luxe, with a mid length pulley cage - an aluminium adaptation of the design of the steel cage used on the SunTour Honor.
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