Many orders ship free — you always see your exact shipping cost before you pay
Rock Jock Pro Edition Johnny Joint Suspension System for JL Wrangler w/ 392 Hemi 3.5 Inch lift RockJock 4X4
1 / 2
Hover to zoom

Rock Jock Suspension Lift Kit for Pro Edition Johnny Joint Suspension System for JL Wrangler w/ 392 Hemi 3.5 Inch lift RockJock 4X4 - Part #RJ-JL3921-101

In Stock
MPN: RJ-JL3921-101
Almost gone! Only 1 remaining
$4,300.00$4,472.00SAVE 4%
Starting at $359/mowithaffirm
Fits:Wrangler JK2007-2018Wrangler JL2019-2026Wrangler JLU2018-2026Wrangler JL SportWrangler JL SaharaWrangler JL RubiconWrangler JL 392Wrangler JL WillysWrangler JL JL2018-2018Wrangler JL2019-2026

RockJock's Pro Edition Johnny Joint Suspension System for JL Wrangler Unlimiteds, 4-door) with the 392 Hemi engine provides 3 1/2 inches of lift and allows for efficient clearance of up to 37 inch tall tires, with minor trimming, larger tires will require aftermarket fenders). This kit is comprised

1

Secure Checkout

SSL Encrypted

Easy Returns

30-day policy

Guaranteed Fitment

Or your money back

Pay Over Time

With Affirm

Freight Shipping — quoted at checkout

RockJock's Pro Edition Johnny Joint Suspension System for JL Wrangler Unlimiteds, 4-door) with the 392 Hemi engine provides 3 1/2 inches of lift and allows for efficient clearance of up to 37 inch tall tires, with minor trimming, larger tires will require aftermarket fenders). This kit is comprised of only the highest end components in the areas of strength, fit, finish, function, and the engineering to back them. This kit is designed specifically for the serious off-roader who not only wants to lift their vehicle and install big tires, but also wants to tackle the toughest trails in the country with confidence and ease. Included in this kit is the full set of 8 Johnny Joint adjustable control arms, set of 4 progressively wound coil springs including one front and one rear coil spring shim, front, 392 specific) and rear bump stop kits, Johnny Joint adjustable front and rear trac bars, 392 specific rear trac bar geometry relocation bracket, front and rear adjustable extended sway bar links and front brake line relocation brackets. For the ultimate off roading package, you'll want to look at all of the upgrade parts that RockJock has to offer that can be added to this kit to finish this build off! Next level offerings such Antirock Sway Bars and Currectlync Heavy Duty Steering are a must for serious off-roading! Shock options to suite this kit are available from all of the top suppliers.

Earn 4300 Yittzy Rewards points with this purchase — 1 point per $1 spent. Join free

Installation Overview

Difficulty
🔧🔧🔧🔧
Advanced
Est. Time
4-12 hrs
Skill Level
Advanced
Pro Install
Recommended
Common Tools: Floor jack, Jack stands, Socket set, Torque wrench, Spring compressor
Read our Lift Kit Guide

Compare Suspension Lift Kit Options

See how this product compares at different price points

Complete the BuildMore from Rock Jock

Buying Guides

Related Articles

You May Also Like