i was looking at the 2.5in rough country coil spacer lift and was thinking or buying and using it with the rubicon springs and shocks with extensions. but then i was wondering if the srpings would sag if i put bumpers on. i know they do with a normal coil lift but i didnt know if it would with the spacer lift. i would assume there would still be sage with this lift becuase there are still springs. is this correct?

 

You will get more sag with stock springs than with most lift springs (heavier spring rate on most of the coil lifts)

 

You will get some sag with a bumper, but if you get some stock TJ springs from a 4.0 engine it will fix your sag and take you back to stock. Also rather than just adding a spacer the higher spring weight will help with the handling with the added weight since you won't be overcompressing the stock one at all times. I did this after adding a bumper and I got 1" of lift, and am back to where I was stock, and now am thinking about a budget boost until I can afford a nicer lift.