I believe the coilover design is different when comparing HKS RS (or LS) to Tein Flex, with the RS allowing for a lower ride height while still preserving suspension travel.

 

Guys with RS- do have have camber kits? can u keep stock camber, and stuff with RS so low?

 

I've got HKS RS with camber arms, 350evo front and Kinetix rear. If you go really low, I'd recommend fixing your camber (especially if you equip wider rubber). Definitely get toe bolts for the rear if you go really low.

 

Can these keep the stock ride hieght? The RS on the Coupe, that is.

 

I've always wanted to know this as well but could never find a concrete answer. I'd be happy if they just maintained stock 350Z height.

I called up HKS and asked them if stock ride height could be kept. They said they didn't know. But I did get this out of them. The coilovers come out of the box at a preset ride height. How that preset compares to stock I don't know. From that preset you have the adjustability of the following...

F: Raise 19mm or lower 36mm
R: Raise 16mm or lower 29mm

 

Stock 350Z height would be nice as well.