Synergy 8843-4000 4" Stage 3 Lift Kit Suspension System
SKU: 93434133048

Synergy 8843-4000 4" Stage 3 Lift Kit Suspension System

$2247.75 $2497.50
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Description

Synergy 8843-4000 4" Stage 3 Lift Kit Suspension SystemElevate the suspension system on your 2018 2023 Jeep Wrangler JL (4 Door) with the Synergy 8843 4000 4" Stage 3 Lift Kit Suspension System from GAP. Synergy MFG Suspension Systems use a synergistic approach, meaning the combined effect of the components is greater than the sum of the individual parts. The overall performance of the system is the most important factor when designing components to work together. Synergy MFG Suspension Systems are

Elevate the suspension system on your 2018-2023 Jeep Wrangler JL (4 Door) with the Synergy 8843-4000 4" Stage 3 Lift Kit Suspension System from GAP. Synergy MFG Suspension Systems use a synergistic approach, meaning the combined effect of the components is greater than the sum of the individual parts. The overall performance of the system is the most important factor when designing components to work together. Synergy MFG Suspension Systems are complete systems for your Jeep and include all necessary components for the lift height and performance advertised. Coil springs and shocks are two of the largest determining factors in ride quality and a mismatched system will never perform to its potential.

The Jeep JL Stage 3 Suspension System is a coil spring 4" lift designed around 37" tires for all models and 40" tires with Rubicon or aftermarket high clearance fenders. This system further builds off the Synergy Stage 2 System by adding a heavy-duty drag link and front track bar relocation bracket to correct the steering geometry, as well as their adjustable rear track bar and new stainless brake lines to deliver a complete and balanced suspension package with all the limits for maximum wheel travel properly addressed. This system is the apex of Synergy's JL Wrangler offerings and capable of extreme performance.


Features:
  • Multi-Rate, Progressively Wound Coil Springs Increase Lift Height 4" Over Stock
  • Longest In Class Free Length Prevents Coil Springs From Coming Unseated At Full Articulation
  • All Adjustable Control Arms Are Included To Correct Caster, Pinion Angle, And Center The Axles
  • Front And Rear Coil Springs Are All New And Have Been Designed Specifically For The JL Platform
  • Bump Stop Spacing Is Adjustable From 2-4" In 1" Increments Without Having To Remove Any Hardware
  • Coil Springs Are Guaranteed To Resist Bowing And Have A Lifetime Guarantee Against Sagging/Breakage
  • 100 Percent Bolt On Components Assure An Easy, Trouble Free Installation With The Use Of Basic Hand Tools
  • Coil Spring Block Height Has Been Designed Around Optimal Bump Stop Spacing For The Lift Height And Tire Size
  • Coil Springs Are Unique Lengths For Each Corner Of The Vehicle To Compensate For Weight Distribution And Prevent Leaning
  • Front And Rear Adjustable Bump Stop Spacer Kits Are Included To Provide The Necessary Clearance Required For Larger Tires
  • Suspension Components Feature An Abrasion-Resistant Powder Coat Finish For Maximum Durability And Corrosion Resistance
  • Control Arms Feature Our Maintenance Free Dual Durometer Bushings (DDB) Focusing On Performance, Flex, Longevity, And Ride Quality
  • Industry First Closed And Ground Lower Ends Of The Front Coil Springs Ensure Perfect Fitment With The Included Front Lower Coil Spring Isolators
  • Adjustable Front And Rear Track Bars Allow Centering Of The Both Axles, Reduce Lateral Shift In The Front End, And Eliminate Bind On Articulation
  • Parking Brake Cable Bracket Secures The Parking Brake Cables When They Are Relocated Under The Rear Crossmember So They Don’t Impede Suspension Travel
  • New Rear Sway Bar Links And Drop Brackets Are Added To The Rear To Allow Full Articulation Of The Rear Suspension And Maintain Compatibility With Stock Wheels
  • Front Steering Correction Kit Combines Our Proven Heavy Duty Drag Link And Front Track Bar Bracket To Raise The Front Roll Center, And Correct The Steering Geometry
  • Front Sway Bar Links With Quick Disconnects Allow Easy Disconnection Of The Front Sway Bar For Maximum Articulation Of The Front Suspension When Used Off Road
  • Double Adjuster Assemblies Are Used For Easy Length Adjustment On The Vehicle And Pinch Bolts Are Used To Secure The Double Adjusters So There's No Fighting Jam Nuts
  • Rear Track Bar Relocation Bracket Raises The Rear Roll Center To Reduce Body Roll And Centers The Rear Axle While Preventing Drive Shaft Interference With The Gas Tank


Benefits:
  • No Maintenance Components
  • Compatible With OEM Wheels
  • Complete Bolt-On System For Easy Install
  • Coil Spring Suspension System To Easily Fit Larger Tires
  • Includes All Components Necessary To Get You On The Trail
  • Greatly Improves Wheel Travel And Articulation Over Stock And Spacer Lifts
  • Best In Class Ride Quality And Performance When Paired With Coil Spring Matched Synergy Tuned Shocks
  • Corrects Suspension Geometry To Center Front And Rear Axles And Fine Tune Alignment And Pinion Angles
  • Includes Front Sway Bar Quick Disconnects For Easy Disconnection Of The Front Sway Bar For Off Road Use


Improvements from the Synergy MFG Stage 2 System:
Adds Front Steering Correction Kit To Raise Roll Center And Improve Steering Geometry
Adds Adjustable Rear Track Bar For Increased Articulation And To Re-Center Axle

8843-4000 - 4" Stage 3 Lift Kit Suspension System Includes:
(1) 8863-40 Front Lift Coil Springs, 4-Inch Lift
(1) 8864-40 Rear Lift Coil Springs, 4-Inch Lift
(1) 8057-10 Snap-Lock Bump Stop Spacer System
(1) 8858-40 Rear Bump Stop Extension, 4.0 Tall
(1) 8859-11 Front Sway Bar Links
(1) 8861-11 Rear Sway Bar Links
(1) 8855-11 Front Track Bar Relocation Bracket
(1) 8800-01 Heavy-Duty Drag Link
(1) 8851-01 Adjustable Front Lower Control Arms
(1) 8853-01 Adjustable Front Upper Control Arms
(1) 8052 Adjustable Rear Lower Control Arms
(1) 8854-01 Rear Upper Adjustable Control Arms
(1) 8875-01 HD Adjustable Front Track Bar
(1) 8856-01 Rear Track Bar Relocation Bracket
(1) 8862-01 HD Adjustable Rear Track Bar
(1) 8818-01 Parking Brake Cable Relocation Bracket

Wheel and Tire Fitment:
Recommended tire size is limited by fender clearance. With higher clearance fenders or trimmed fenders, larger tires may be fitted. Bump stop spacing should be matched to the collapsed length of the shocks. Mismatched bump stop spacing and shocks will limit the available travel from the system.

Notes:
Synergy MFG coil springs lift the vehicle the advertised height over stock based on a fully loaded JL Rubicon. Other JL models will see more lift over stock. These coil springs do not lift taller than advertised. The stock rake based off the Rubicon model is kept to retain its load carrying capacity. If you prefer the vehicle to sit level when unloaded, Synergy recommends adding a small coil spacer to the front (up to 3/4-inch without affecting up travel or causing coil bind, 8017-075).

Synergy is not responsible for maintaining finish of products. Environmental factors will affect rate of corrosion and wear for items advertised to be corrosion resistant. Synergy recommends using protective coatings for all items that will see extended outdoor and off-road use. Synergy has had great experience with the Fluid Film product and recommend it and similar products for any items susceptible to damage from corrosion. It is great for keeping double adjuster assemblies working like new and protecting shock bodies from the elements.

Additional Specifications:
Lift Height: 3-inches over stock Rubicon, 3.75-inches over stock Sport/Sahara
Wheel Travel: Capable of 10.2-inches Front, 11" Rear (+2.7-inches front and +2.4-inches rear over stock Rubicon) when used with Synergy Tuned Shocks and optimal bump stop spacing
Tire Size: Up to 37-inch Rubicon, 35-inch Non-Rubicon
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 93434133048

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4.5 ★★★★★
Based on 315 reviews
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Product Reviews
A
Verified Purchase
Amazon Customer
Houston, US
★★★★★ 5
Great for mental stimulation. Durable for my chewers!
Color: Purple Lil Snoop, Color: Purple Lil Snoop
Love these! Quality material, safe for dogs — I make my dogs home made freezer treats and fill these up with it, and serve. Keeps them busy for hours. It’s also fun for them to roll it around to get regular treats out of. Toy + treats = a very happy pup. This size I got for my puppy. The larger ones I use for my adult dogs. Super cute too, and silent! I have Mini Aussies, so it’s great mental stimulation for them. Tires them out.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 7, 2026
R
Verified Purchase
Robyn Kanouse
San Leandro, US
★★★★★ 5
Very durable
Color: Blue
I have never written a review but just have to say how much our Pitbull LOVES this toy. It is very sturdy very good since he is such an aggressive chewer. This is only the second product I have found that he can’t destroy in 5 minutes. It keeps him busy for a long time and plays with it long after the treats are gone which is good as too many treats and he would gain weight. Highly recommend it. He weighes 70 lbs and the largest one is the perfect size. Kibble doesn’t work as it empties out immediately. I use Beggin Strips cut to size just to fit in the hole—they will come out but not all at once and survive his chewing on the toy.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 8, 2026
C
Verified Purchase
Caleigh Meyer
Bozeman, US
★★★★★ 4
Overall good toy for dogs
Color: Blue
My dog loves her snoop. I put little training treats in there for her, and she loves to roll it around and get the treats out. For her, it doesn’t last very long because they do fall out pretty easy, but she is a big dog so a smaller dog might have a harder time than her. Very sturdy and easy to travel with. Not noisy at all. I would say it’s a good, quick play toy for a dog like mine.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 14, 2026
A
Verified Purchase
Anel
Port Orchard, US
★★★★★ 5
Fav Chew Toy 🦴
Color: Blue, Color: Blue
My baby is half rottweiler and half doberman &’ he has a pretty strong grip when it comes to chew toys. But this one, it’s his favorite toy! He never leaves the house without it. It’s also really fun to add his favorite treats in there when’s he bored to keep him entertained! Not loud at all and will keep him from chewing on other things and not heavy as other rough chew toys!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 31, 2026
L
Verified Purchase
Love for Design
Chelsea, US
★★★★★ 5
Great you made super well
Color: Blue Lil Snoop, Color: Blue Lil Snoop
This is such an awesome toy. It’s super durable strong bounces and a perfect size. We got the small. We got blue because our pup can see it. It allows for creativity and endless limits to what you can make for it to be a fun experience. It has a nice sized hole in the center which allows you to add treats and food. Pop it inward and it slightly if large enough prevents the treats from coming out super fast. The ball rolls bounces and they can grip it nicely. It is easy to clean The only thing I didn’t like was the way the plastic tabs were situated inside the toy as you just be careful you don’t allow it to drip inside and dog gets it. No noise just fun. Our 15lb Cavapoo loves it
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 17, 2026

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