Mid-Tier Lift Kit — 3"–4" Spring Lift ($600–$1,500)

The 3"–4" lift is where the TJ starts performing like a trail rig — but it also introduces geometry problems that a quality kit must address to drive right on the road.

At 3.5" of lift the TJ genuinely transforms. You gain clearance for 33" tires without fender trimming, meaningful flex improvement, and a ride height that holds its own on moderate trails. The problem this lift height introduces — and that distinguishes a good mid-tier kit from a budget one — is caster angle correction and track bar geometry. As the axle drops away from the body, the front axle's caster angle decreases, causing wandering and poor return-to-center steering. Every quality kit at this level includes adjustable upper control arms or cam bolts for caster correction.

The OME 3" kit is the overland standard for a reason. Old Man Emu builds their coil rates around real-world load calculations, and the Nitrocharger Sport shock is a genuine upgrade over most stock units. The TJ OME setup delivers a controlled, comfortable ride on pavement that budget kits rarely match. It's not the most aggressive lift — 3" is the stated height — but OME spring rates are consistent and predictable over time, and they don't sag the way soft budget springs do after 30,000 miles.

Rubicon Express's 3.5" Super-Flex kit leans toward articulation over on-road comfort. The Super-Flex mono-tube shocks and modified spring rates produce noticeably more droop than the OME setup, which pays off on technical trails with uneven terrain. The kit includes a track bar drop bracket and adjustable front upper control arms for caster correction. If you're building for moderate trail use over pavement comfort, this is the better choice. Rough Country's 4" kit rounds out the tier with more lift height for less money — the N3 shocks are serviceable, but plan to upgrade them if you push the rig harder than light dirt roads.

At any lift over 2.5", plan to add an SYE kit for the NP231 transfer case. Without it, the slip yoke output causes driveline vibration above 45 mph that gets worse with lift. It's not an emergency fix, but it's a known issue you'll want to budget for.

Steps

1. Break lug nuts loose before lifting the vehicle.
2. Raise the vehicle at the frame rails and support securely on jack stands at all four corners.
3. Support the front axle independently on a floor jack.
4. Disconnect sway bar end links and front track bar from the axle bracket.
5. Disconnect front upper and lower control arms from axle (if kit includes replacement control arms).
6. Lower the front axle carefully to release coil spring tension; remove old springs.
7. Install new coil springs; reconnect control arms hand-tight.
8. Install track bar drop bracket per kit instructions; reconnect track bar.
9. Repeat spring swap for rear coils (rear control arms may also need adjustment depending on kit).
10. Install new shocks — front and rear — per manufacturer instructions.
11. Torque all control arm bolts and track bar bolts with the suspension loaded (vehicle on ground). Front lower control arm: 130 ft-lbs. Track bar: 74 ft-lbs. Sway bar end links: 11 ft-lbs.
12. Set caster angle using adjustable upper control arms or cam bolts per kit spec (typically 4°–7° positive caster on the TJ).
13. Drive 100 miles, re-torque all fasteners.
14. Schedule a full 4-wheel alignment immediately after install.

Why it works

• Quality kits include geometry correction hardware (track bar drop bracket, adjustable upper control arms)
• 3.5" clears 33" tires without trimming; 35s are possible with minor flare trimming
• OME kit provides one of the best on-road ride qualities in this price range
• Rubicon Express Super-Flex provides trail articulation that approaches long-arm performance
• Kit components are widely available and well-documented for DIY builds

Trade-offs

• Requires a professional front-end alignment after install
• Lifts above 2.5" require SYE kit + rear CV driveshaft to eliminate driveshaft vibration
• At 4", stock brake lines may be marginal — inspect and replace extended lines if needed
• Budget shocks in lower-cost kits (Rough Country N3) are adequate but not trail-capable long-term
• Adjustable upper control arms require periodic re-checking of caster after significant trail use

Tools required

• floor jack
• jack stands
• torque wrench
• socket set
• spring compressor
• ball joint press
• alignment tool

Parts

Part	Vendor	Est. price
OME 3" Lift Kit with Nitrocharger Sport Shocks (TJ front/rear coils + shocks)	Old Man Emu / ARB	~$649
Rubicon Express 3.5" Super-Flex Suspension Lift Kit RE7000	Rubicon Express	~$749
Rough Country 4" Suspension Lift Kit with Premium N3 Shocks TJ 68230	Rough Country	~$699

Sources

• JeepForum — OME vs Rubicon Express TJ Lift Comparison
• Rubicon Express TJ Super-Flex Installation Guide
• 4WD Hardware — TJ Suspension Lift Overview

Related

• Budget Lift Kit — Coil Spacers and Entry Springs (≤$600)
• Long-Arm Lift System — 4.5"+ for Rock Crawling ($2,000+)
• Shock Absorber Upgrade — OME, Bilstein, and Fox Options
• All Jeep Wrangler TJ guides & tools
• Browse the full DIY database

---

Written and maintained by an AZ wheeler and driveway wrencher. Always cross-reference your factory service manual — modifications affect vehicle safety and warranty. Work at your own risk.

Trail Manual · About · Privacy · Terms · Database