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Description
Synergy 8864-30 3"-4" Rear Lift Coil SpringsGrab the Synergy 8864 30 3" 4" Rear Lift Coil Springs from GAP for your 2018 2023 Jeep Wrangler JL. Synergy MFG has designed these springs from a clean sheet for the new Wrangler platform. All springs are multi rate and have been designed to make a great platform even better. These springs are unique to the JL and not shared with the JK or other vehicles. Like OEM, our coil springs are unique lengths to account for load differences on each corner of
Grab the Synergy 8864-30 3"-4" Rear Lift Coil Springs from GAP for your 2018-2023 Jeep Wrangler JL. Synergy MFG has designed these springs from a clean sheet for the new Wrangler platform. All springs are multi-rate and have been designed to make a great platform even better. These springs are unique to the JL and not shared with the JK or other vehicles. Like OEM, our coil springs are unique lengths to account for load differences on each corner of the vehicle. There are right and left specific springs front and rear to guarantee the vehicle will sit level. The multi-rate design has a soft initial rate which prevents the spring from coming loose in the coil tower, even with long travel shocks. The ride rate is slightly stiffer than the OEM springs to account for additional weight from bumpers, winches, skid plates and gear. Springs are proudly manufactured in the United States of the highest quality steel. Springs are designed to be able to set solid (fully collapse) without overstressing the material and are pre-set from the factory meaning the springs will never sag or set.
Features:
- Multi-Rate Coil Springs Allow For Longer Spring Lengths And Increased Travel
- Spring Rates Are Only 5-10 Percent Stiffer Than Stock For Superior Ride Quality
- Coil Spring Block Heights Are Designed Around Common Bump Stop Spacings To Optimize Wheel Travel
- Unique Spring Lengths For Each Corner Of The Vehicle So It Will Sit Level Side To Side
- Frequency Balanced And Tuned Spring Rates To Maximize Suspension Performance On And Off Road
- Abrasion-Resistant Black Powder Coat Finish For Maximum Durability And Corrosion Resistance
- Sold In Pairs
Note: 4-Door Lift Height: 3"
2-Door Lift Height: 4"
Coil springs require proper bump stop spacing with Synergy 8057-10 Bump Stop Spacers.
Lift heights are based off fully loaded Rubicon models. Other models will see more lift.
Coil Springs retain the stock rake of the vehicle.
Up to .75 inch of front coil spring spacer can be added to level the vehicle using 8017-075 front coil spring spacers.
Min bump stop spacing listed is the minimum amount of bump stop spacing required to prevent the springs from going into coil bind. Do not use less bump stop spacing.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- 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
4.1 ★★★★★
Based on 24 reviews
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Product Reviews
★★★★★ 5
Amazing mattress
Item Firmness Description: Medium Firm, Item Thickness: 12.0 Inches, Size: Queen (U.S. Standard), Item Firmness Description: Medium Firm, Item Thickness: 12.0 Inches, Size: Queen (U.S. Standard)
I’m really happy with this mattress! From the first night, it felt super comfortable and supportive. It has the perfect medium-firm feel, not too hard and not too soft, which makes it great for a good night’s sleep.
The memory foam adapts really well to my body and helps relieve pressure, especially on my back and hips. I wake up feeling much more rested and without soreness.
I also love that it has a cooling effect. I usually get warm while sleeping, but this mattress stays comfortable throughout the night.
Another great thing is that it doesn’t transfer movement, so if you share the bed, you won’t feel the other person moving around.
Overall, this mattress exceeded my expectations. It’s comfortable, supportive, and feels like great quality for the price. I would definitely recommend it!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 29, 2026
★★★★★ 5
Comfortable and well made
Item Firmness Description: Medium Firm, Item Thickness: 12.0 Inches, Size: King
The firmness is great. Sleeps so good. Keeps us cool and forms to our bodies. I just hope it holds up for a few years. I have the 12 inch and my daughter that is 100lbs has the 10 inch we’ll see if this was as good of a buy as I think it is. Feels good and soft to the touch. I recommend this to anyone before you spend 2000.00 on a bed try this one it so very worth the money.
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Reviewed in the United States on May 22, 2026
★★★★★ 4
Couch yes. Sleep, no
Item Firmness Description: Medium Firm, Item Thickness: 6.0 Inches, Size: Twin
I bought it for a daybed in the livingroom as a couch. It’s firm, but conforms to you(memory foam). Sitting is comfortable, however if I lay down it’s too hard. I can set a plate of food down next to me and it won’t move. So perfect for a couch, I wouldn’t be able to sleep on it
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Reviewed in the United States on May 30, 2026
★★★★★ 5
I am very pleased with this purchase😍
Item Firmness Description: Medium Firm, Item Thickness: 8.0 Inches, Size: Queen (U.S. Standard), Item Firmness Description: Medium Firm, Item Thickness: 8.0 Inches, Size: Queen (U.S. Standard)
I’ve been sleeping on the EGOHOME 8 Inch Memory Foam Mattress in Queen size for a little while now, and I’m honestly very happy with it. The Queen size fits perfectly and gives plenty of space while still feeling super cozy.
The mattress has a really comfortable medium-firm feel — supportive but still soft enough to relax into after a long day. I also noticed the cooling gel foam helps prevent overheating at night, which makes sleep much more comfortable.
It arrived compressed in a box and expanded quickly without any issues. The quality feels great for the price, and there was very little odor after opening.
Overall, this mattress gives great support, relieves pressure nicely, and has definitely improved my sleep quality. Highly recommend if you’re looking for a comfortable Queen mattress!
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Reviewed in the United States on May 23, 2026
★★★★★ 5
Good 👍
Item Firmness Description: Medium Firm, Item Thickness: 6.0 Inches, Size: Twin, Item Firmness Description: Medium Firm, Item Thickness: 6.0 Inches, Size: Twin
Great mattress for kids! It expanded quickly, has minimal odor, and provides a comfortable balance of softness and support. The memory foam relieves pressure well, and the cooling gel helps keep it comfortable throughout the night. Excellent quality for the price and a great choice for a child’s bed.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 5, 2026
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