Originally Posted by
Steve B.
My reply was based on the thread title which indicated the AL - or Aluminum models, not the carbon. Did the early Carbon models with rear suspension use an aluminum rear triangle ?, I was not aware of that.
Sorry for the confusion. When you said "with suspension" I assumed you were talking about the model with the lefty fork, hence why I clarified that it was "all carbon models". To clarify, all carbon topstone frames had/have the Kingpin setup, which allows the rear triangle to flex and provides some suspension travel. The design relies on flexy carbon chain stays and I don't think would work with aluminum, which is why the aluminum models are rigid.
The new Carbon topstone no longer has the Ai Offset, but still has the same Kingpin setup.