RockJock JL Rear Coil Spring Shims for JL Wrangler and Unlimited vehicles are 3/16 in. thick and mount between the welded on coil spring axle pad and the coil spring isolator. The indexing pin in the coil spring isolator fits thru the hole in this shim to properly clock it.
These shims are used to fine tune vehicle height per model, engine combination and added weight load.

Kit Fits:

• JL Wrangler Unlimited (4-door) – All Models’ Factory Differential Housings
• JL Wrangler (2-door) – All Models’ Factory Differential Housings

Kit Includes:

• (1)  Rear Coil Spring Shim

Component Specs.:

• Construction  =  laser cut steel
• Material  =  A36 steel
• OD  =  4.500 in.
• ID  =  3.100 in.
• Thickness  =  .250 in.
• Stacking  =  do not stack
• Hole Diameter  =  .394 in.
• Finish  =  semi-gloss black powder coat

Notes:

• For use on all factory differential housings in all models of JL Wrangler and Unlimited vehicles
• Can be used on right or left side
• This unit very simply installs using the spring isolator's indexing pin to index it to the axle housing
• Applicable with any spring of any lift amount

Media Hub

• Installation Instruction Manual: RJ-107400-3 Shims