I have Tein flex with 10K Front and 12K in the rear, not ideal for dragracing. Do you think I can get some softer springs from swift to make it work for the strip, or do I need a revalve too?

Or just sell the Tein flex and get Apexi N1's or AWD D2 or STM D2?

 

I'm sure you could throw some swift springs in there/ a nice soft spring rate for launching. A spring rate thats a tad stiffer then stock will net some nasty 60's I know the AWD D2's come valved ready for drag which is nice. Swift springs aren't cheap.

 

Pretty sure that the swift springs won't fit the Teins. They will however fit the D2's.

 

I saw some swift springs on Tein Monoflex, not sure how different they are regarding springs with Tein flex