An RD is a 1970s 350cc 2 stroke parallel twin with classic styling and a powerband to make you go ahhhhh. It does not have powervalves in it, so is truly all or nothing.
A TDR is an 80s/90s 250cc 2 stroke twin supermotard that utilises the same engine as the TZR250 of the same era. In that stead, they operate with YPVS (powervalves) which in the end results in a smoother transition. There are something like 8 in NZ I think?
Gammaguy would know, he has one. He often brings it on the Christchurch Wednesday night rides. It is amazing.
RD350
TDR250
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