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The RockJock 1 Inch Front Bump Stop Kit for all JL Wrangler 392 Hemi models (only) provides proper bump stop extension when using our lifted JL front coil springs. 
Spacers are CNC machined billet aluminum. Finish is clear anodize on the bump stops and zinc plating on the hardware.


Kit Fits:

  • JL Wrangler Unlimited (4-door) – 392 Models


Kit Includes:

  • (2) Aluminum bump stop spacers (fit right or left side)
  • All Required Hardware


Component Specs.:

  • Spacers are 1.000 in. tall
  • Spacers are 3.000 in. O.D.
  • Thru-hole is .515 in. (to accept a 1/2 in. bolt)



  • Intended for use with our RJ-144100-101 3.5 in. lift JL 392 Front Coil Springs.


Parts List:

  • 1/2 in.-13 x 1 1/4 in. Long Hex Bolt: RJ-501203-3
  • 1/2 in. Lock Washer: CE-91102A770
  • 12mm Flat Washer: CE-91455A150

RJ-140100-101 - JL Front Bump Stop Kit (392)

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