You can go with up to 3" blocks in the rear with out any problems on or off road, and they will not make the ride stiffer. Anything more than 3" blocks will require some sort of traction/ladder bars to keep the axle wrap in check.


John Luttrell
2001 4x4 short cab, 3 inch lift with 33 inch mudders and Powertrax no-slip in the rear


1991 Jeep YJ, 4 inch suspension lift on 33" BFG's