[Xtreme Thunder]

Originally Posted by gx4th

CTE RSB Sway Bar - Rear (06-09 Civic Si)

That's an alternative. You can adjust for either 30% stiffer than stock SI or 60%

Eibach Adj. 19MM RSB is the same thing as the CT-E. Eibach produces them for CT-E. Eibach version is the same, adj and less money.

There is also a Blox 21MM, not sure of cost though.