The HR are inverted monotube
TT is Twin Tube (TT)

I like the idea of the new TT model. Twin tube is same design as TEIN Super Streets. It has lower dampening rates so its more suited to a daily driver. Plus being a non-inverted design the damping adjustment knob is on the top which makes life easier compared to HR/HS coilovers.

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RS Liberty - Because WRX's are only good for parts...