TeraFlex Lift Coil Spring Kit, Front or Rear for 2007-2018 Jeep Wrangler JK
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Fits the same truck
Features
- 2-door and 4-door ratings: Each spring lists its lift for the JK and the JK Unlimited.
- Front and rear kits: Order front and rear separately to match heights.
- Outback overland springs: Load-enhanced heavy-duty rates for extra cargo, per TeraFlex.
- Shot peened Outback coils: Shot peening reduces sag and fatigue and adds life.
- Linear-rate design: Keeps the most coils active for predictable handling.
- Lift is an average: Winch, bumpers, spare and cargo affect final height.
Description & Fitment
TeraFlex JK Lift Coil Springs fit both the 2-door 2007-2018 Jeep Wrangler JK and the 4-door JK Unlimited, with the lift depending on body style (for example 3" on a 2-door is 2.5" on a 4-door). Front and rear kits run from 1.5" to 7", and the Outback springs use load-enhanced heavy-duty rates and shot peening for overland cargo weight and less sag. TeraFlex rate-tunes its springs for highway and trail and uses a linear-rate design. Each option is one axle, and the listed lift is an average that a winch, bumpers or cargo can change.
Fitment & Compatibility
| Years | Model | Bed | Notes |
|---|---|---|---|
| 2007-2018 | Wrangler | JK; 2-door: 3"-7" lift; 4-door: 2.5"-6" lift |
Check your Jeep: Wrangler JK 2-door or JK Unlimited 4-door 2007-2018.
Not for: TJ or JL models. 2-door 1.5": 1853022/1854022.
About TeraFlex
TeraFlex describes itself as a Jeep company at heart, started and staffed by people who drive them. It designs, engineers and builds suspension systems, shocks, axles and performance parts, with the Wrangler and Gladiator at the center of the range.
The company traces its roots to the 1950s and MEPCO (Military Equipment Parts Company), an early supplier of Jeep parts. TeraFlex Manufacturing followed in 1996 to build heavy-duty suspension for the TJ Wrangler, and today's catalog runs from full lift systems and the Falcon shock line to axles, steering and armor.
Authorized TeraFlex dealer. Prestige Truck is an authorized TeraFlex dealer, so what we sell is new and genuine TeraFlex. In TeraFlex's words, its limited warranty extends "only to the consumer who originally purchased the product," so keep your receipt with your build records.
Frequently Asked Questions
Why does each option show two lift heights?
The 2-door JK is lighter, so the same spring lifts it more than a 4-door JK Unlimited. Pick by the height for your body style.
When should I choose Outback springs?
TeraFlex designed Outback springs for the extra cargo of overland travel, with heavier load-enhanced rates.
Do I get front and rear?
No. Each option is one axle; order a front and a rear kit.
What warranty does TeraFlex give?
TeraFlex covers its coil springs and 9550 VSS shocks for life against defects in materials and workmanship, and paint and powder coat finishes for 90 days. Contact us to confirm coverage on other parts of your kit or to start a claim.
How quickly does it ship?
Shipping is free to the lower 48 states, and most orders arrive within 1-5 business days. We email your tracking number as soon as it ships.
Can you confirm it's the right kit before I order?
Yes. Contact us with your VIN or year, model, doors and trim, plus your wheels, tires and any lift parts already fitted, and we'll check it against TeraFlex's fitment information before it ships.
Installation
Here's the short version. Follow TeraFlex's install sheet (below) for your Jeep's exact steps and torque values.
- Raise and support the Jeep at the factory lift points, remove the wheels and support the axle with a jack or jack stands.
- Disconnect the sway bar links at the axle (18mm), the shocks at the axle (18mm) and the track bar at the axle (21mm, flag nut), and loosen, but do not remove, all front control arm bolts (21mm).
- Lower the jack until the springs are free and remove them, watching that the ABS lines, brake lines and breathers are not overstretched.
- Install both new coil springs, driver side first, rotating each until it is fully seated, then raise the jack to refit the shocks at 56 ft-lbs and the sway bar links at 75 ft-lbs.
- Refit the wheels (lug nuts 95-115 ft-lbs), lower the Jeep and on the ground torque the front track bar to 125 ft-lbs, the upper control arm bolts to 75 ft-lbs and the lowers to 125 ft-lbs.
- Center the steering wheel by turning the drag link adjuster sleeve (about 3/4 turn counter-clockwise from the driver side, then test drive), torque the pinch clamp bolts to 45 ft-lbs, and re-torque all bolts after 100 miles.
Stuck on a step?
Specifications
| Brand | TeraFlex |
|---|---|
| Product Type | Lift coil spring kit |
| Position | Front or rear (by version) |
| Lift Height | 1.5"-7" (2-door rating higher than 4-door; by version) |
| Spring Type | Linear rate; Outback: load-enhanced heavy-duty rate, shot peened |
| Part number | 1853102 |
| UPC | 843885023852 |
| Part # | Version | UPC |
|---|---|---|
| 1853102 | Front, 3" 2-Door / 2.5" 4-Door | 843885023852 |
| 1853202 | Front, 4" 2-Door / 3" 4-Door | 843885023876 |
| 1853402 | Front, 6" 2-Door / 4" 4-Door | 843885023890 |
| 1853602 | Front, 7" 2-Door / 6" 4-Door | 843885023913 |
| 1854052 | Rear, 2.5" 2-Door / 1.5" 4-Door | 843885023951 |
| 1854102 | Rear, 3" 2-Door / 2.5" 4-Door | 843885023975 |
| 1854202 | Rear, 4" 2-Door / 3" 4-Door | 843885023999 |
| 1854402 | Rear, 6" 2-Door / 4" 4-Door | 843885024019 |
| 1854602 | Rear, 7" 2-Door / 6" 4-Door | 843885024033 |
| 1861102 | Outback Front, 3" 2-Door / 2.5" 4-Door | 843885033356 |
| 1862202 | Outback Rear, 3" 2-Door / 2.5" 4-Door | 843885034087 |
| 1863202 | Outback Front, 4" 2-Door / 3" 4-Door | 843885035442 |
| 1864202 | Outback Rear, 4" 2-Door / 3" 4-Door | 843885033998 |
Warranty, shipping & returns
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Warranty
TeraFlex covers its coil springs and its 9550 VSS shocks for life against defects in materials and workmanship, and paint and powder coat finishes for 90 days (defects only). TeraFlex's warranty list names no separate term for the coil spring spacers in the Gladiator 2.5" kit, so contact us if you need that term before ordering.- TeraFlex extends its limited warranty only to the consumer who first bought the product, and only on the vehicle the part was first installed on. It does not pass to a later owner.
- Coverage starts on the purchase date and does not restart if a part is repaired or replaced.
- For a covered defect, TeraFlex will either repair or replace the product (or the faulty part) free of charge or refund the purchase price, at its discretion, and it pays the freight to send a repaired or replacement part back to you.
- Not covered: damage from transportation, storage, improper use, skipped instructions or preventive maintenance, modifications, unauthorized repair, normal wear and tear, product finish, improper installation or maintenance, racing or competition, or accidents, abuse and neglect. Improper installation, poor maintenance, racing or competition use, and neglect or abuse void the warranty.
- Paint and powder coat finishes carry 90 days of defect coverage only, not wear from use.
- Claims: contact us first. Keep your proof of purchase or original invoice; removing the part from the vehicle and the inbound shipping are the owner's responsibility.
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Free shipping
Ships free to the lower 48 states, with no minimum order.- Order by 5 PM ET on a business day and it starts processing the same day.
- Most orders arrive within 1-5 business days.
- We email your tracking number as soon as it ships.
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Inspect on delivery
Check that every spring, spacer and shock matches the part list in the TeraFlex instructions, and that springs are marked for the right axle, before you start. Contact us right away about anything missing or damaged. Check it as soon as it arrives.- Look for crushed ends, punctures or tears in the carton.
- If something looks wrong, take photos of the box and the parts (and if a driver asks you to sign, note the damage on the receipt).
- Open the box and check the parts against the parts list before you install.
- Email support@prestigetruck.com right away with your order number, a short note and photos. We send a replacement or a full refund at no cost to you.
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30-day returns
Return it within 30 days of delivery, unused, in the original packaging, with proof of purchase.- Email support@prestigetruck.com with your order number. We reply within 1-2 business days with instructions.
- Damaged, defective or wrong item: we send a prepaid label or arrange a pickup.
- Changed your mind: you pay return shipping. No restocking fee.
- Refunds go back to your original payment method within 7 business days of approval. See our returns policy.