Join Date: May 2015
Location: That one with too many people, Texas
I been doing some research tonight on the OME lifts and thought I'd post it here for others to find. First thought, the OME lift is not a 2.5" lift but a 50mm (~2" [1.9685"]) lift. Not sure why people constantly post it as a 2.5" lift. The heavy rate coils might provide more than the intended 50mm of lift but that is because the Jeep does not weigh enough to cause the springs to sag. The lift is designed by net 50mm when paired with the proper rate coils. I have a light jeep compared to other highly modified jeeps and found the heavy rate springs to be too stiff and caused the jeep to buck when going over rough roads at driving speeds. When I swapped to the lighter rate springs my ride improved folds and still netted me close to the designed lift height. Anyways here are the specs from the OME Catalog on the springs that can be used on the TJ.
Coil # / Coil Rate / Free Length
OME Front 2931 ZJ I6 - 140 lbf/in - 20.08 in
OME Front 2932 0 to 88.18 lbs - 140 lbf/in - 18.89 in
OME Front 2933 88.18 to 176.37 lbs - 140 lbf/in - 19.48 in
OME Front 2934 ZJ V8 - 160 lbf/in - 20.08 in
OME Rear 2941 Hard Top - 140 lbf/in - 15.35 in
OME Rear 2942 220.46 lbs - 160 lbf/in - 14.96 in
OME Rear 2949 LJ Hard Top - 216 lbf/in -14.57 in
The OME coils are a linear coil so they maintain the same rate throughout.
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