SKU: 13635173374

Synergy 8864-30 3"-4" Rear Lift Coil Springs

Sale price$139.50 Regular price$155.00
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Ships within 48 hours · Estimated delivery Jul 15 - Jul 20

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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:
  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: 13635173374

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4.3 ★★★★★
Based on 2318 reviews
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C
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Chan.C
Lowell, US
★★★★★ 5
Soft!
Color: Peach Fuzz
These socks for dry heels are wonderful. I purchased a balm for my feet and these help it soak in over night. They have a gel liner in the heel which is soft. The first few nights I could. Feel the socks just because I wasn't used to it but after a few wears I can't tell I have them on. Love them and seem to be helping my heels.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 23, 2026
G
Verified Purchase
geoffrey desmond
Bozeman, US
★★★★★ 5
Soft heels, here I come!
Color: Blue Haven
⭐️⭐️⭐️⭐️⭐️ I bought these for my 16-year-old daughter, and she loves them. They’re super soft and cozy, and they’ve really helped with dry heels. The moisturizing lining works great, and her feet feel noticeably smoother after wearing them. She even wears them around the house because they’re comfortable, not bulky or slippery. Great quality and a fun little self-care item — definitely a win! I even bought myself and my mom a pair!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 10, 2026
E
Verified Purchase
Emily Ross
Fort Morgan, US
★★★★★ 5
Works great!
Color: Lavender Luxury
Kind of surprising but these actially work and are comfortable. I noticed a difference in my calloused heels after the first use.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 21, 2026
C
Verified Purchase
Chris
Waukegan, US
★★★★★ 5
Best thing ever!
Color: Lavender Luxury
These are the best thing ever! Put your favorite foot balm on then cover your heels with these socks and go to bed. You’ll wake up with the softest feet and no cracked heels!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 16, 2026
L
Verified Purchase
Lauren Day | Hawaii Mom Life
Boise, US
★★★★★ 4
Works well if you wear them every day
Color: Lavender Luxury, Color: Lavender Luxury
These heel socks do work, but you need to be consistent and patient. The socks are soft with a gel lining on the inside that basically traps your body heat and moisture—kind of like a mini spa for your feet. My heels felt noticeably softer after just one hour of wearing them. That said, I don’t love sleeping with socks on, so it took me two nights to get used to them. I even took them off the first night because I couldn’t stand the feeling. After five nights of use with nightly exfoliating, my heels are definitely softer, but still cracked in some areas. I’m hoping they keep improving with continued use. If you stick with it and exfoliate regularly, these socks definitely help soften rough skin. Not a miracle fix overnight, but a helpful tool for healing cracked heels.
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Reviewed in the United States on June 6, 2025

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