The TeraFlex JL/JLU: 0. 5” Bump Stop Strike Pad Shim Kit extends the reach of the factory bump stops on lifted JL/JLU Wrangler models to soak up energy during hard compression and suspension movement. Combine with our JL/JLU: 2” Bump Stop Strike Pad Extension Kit (# 1959500) to fine tune your strike pad height. Fits: JL Wrangler (2-door) JLU Wrangler Unlimited (4-door)Max Tire Size w/ JL/JLU: 2” Bump Stop Strike Pad Kit (# 1959500): Sport/Sahara Fenders: 35” (w/ 3” front & 2. 5” rear bump stops) Sport/Sahara Fenders: 37” (w/ 3. 5” front & 4” rear bump stops) Rubicon Fenders: 37” (w/ 2. 5” front & 3” rear bump stops) Aftermarket High Fenders: 39”+ (varies)Includes: 0. 5” front bump stop strike pad shims - 4 0. 5” rear bump stop strike pad shims - 4Note(s): Sport/Sahara Fenders require 3” front and 2. 5” rear bump stop extensions and shims in order to fit 35” tires. Sport/Sahara Fenders require 3. 5” front and 4” rear bump extension and shims in order to fit 37” tires. Requires an additional 0. 5” Front & Rear Bump Stop Strike Pad Shim Kit (# 1959300) ? NOT INCLUDED. Rubicon Fenders require 2. 5” front and 3” rear bump stop extensions and shims in order to fit 37” tires. Aftermarket High Fenders required to fit 39”+ tires. Bump extension and shim requirements will vary based on setup including wheel/tire combination, shock collapsed length, and fenders. Installer must check for clearances. We recommend an additional 0. 5” Front & Rear Bump Stop Strike Pad Shim Kit (# 1959300) ? NOT INCLUDED. Requires 2” Front & Rear Bump Stop Strike Pad Extension Kit (# 1959500) ? NOT INCLUDED.