Originally Posted by
bnuk
you realize ground controls use H&R race springs right? that means you can order them with just about any weight spring you want and swap them out.
Ground Control's use Eibach springs, not H&R.
Originally Posted by http://www.ground-control-store.com/products/category.php/CA=2
Ground Control uses only the highest quality springs on the market with our coil over hardware. Eibach springs are unsurpassed in quality, engineered for maximumum travel and garaunteed for life. Ground Control stocks over 175 different Eibach Springs to create the custom ride you expect.