I have a 4in bds lift but I want to get rid of the 2in spacer. So would I need to but some spring off a 6in lift or how would I go about it?

 

go with a 4 or 4.5" progressive rate coil

 

Which brand? BDS doesn't have any.....

 

...........

 

Bump..

Which brand?

 

Rock Kralwer makes awesome springs but only their front ones are progressive. their rear springs are heavy dut and I've had zero sag even with heavy bumper on the back.

I think AEV uses all progressive rate springs on their setup. Start there and see what other options people post

 

Correct, Also MetalCloak has some awesome progressive springs. Look into them as well.