Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 10 - Jul 15
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For Your Every Summer RSVP, with Code: SUMMER15
Description
Synergy 8516-02-400 Add-A-Leaf PackImprove the ride quality on your 2003 2013 Dodge Ram 2500 3500 4WD with the Synergy 5612 02 400 Add A Leaf Pack from GAP. The Synergy add a leaf pack is a 5 leaf design that replaces the factory overload spring for improved ride quality both on and off road. It eliminates the harsh spring rate ramp up caused by overload engagement and results in a more predictable comfy ride and better traction for your vehicle. Features: High Quality 9 16" E Coated U
Improve the ride quality on your 2003-2013 Dodge Ram 2500/3500 4WD with the Synergy 5612-02-400 Add-A-Leaf Pack from GAP. The Synergy add-a-leaf pack is a 5-leaf design that replaces the factory overload spring for improved ride quality both on and off-road. It eliminates the harsh spring rate ramp-up caused by overload engagement and results in a more predictable comfy ride and better traction for your vehicle.
Kit Includes:
(2) 8516 Add-a-leaf packs (Single or Dual center pin depending on part number)
(2 or 4) 1/2-20 UNF x 6.0" long replacement center pins
(4) 9/16-18 UNF x 4.0" or 3.50" x 10-11" long HD E-coated U-bolts (Size varies depending on part number)
(8) 9/16-18 UNF GR8 tall nuts
(8) 9/16" ASTM F436 hard washer extra thick
Features:
- High-Quality 9/16" E-Coated U-Bolts
- F436 Extra Thick Hard Washers And GR8 Tall Nuts Included
- Bolt-On Installation Using Basic Hand Tools
Kit Includes:
(2) 8516 Add-a-leaf packs (Single or Dual center pin depending on part number)
(2 or 4) 1/2-20 UNF x 6.0" long replacement center pins
(4) 9/16-18 UNF x 4.0" or 3.50" x 10-11" long HD E-coated U-bolts (Size varies depending on part number)
(8) 9/16-18 UNF GR8 tall nuts
(8) 9/16" ASTM F436 hard washer extra thick
Note: 2013 Dodge Ram 3500's were a split year for production. If your truck has radius arms use 2014+ Dodge Ram parts.
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 914 reviews
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Product Reviews
★★★★★ 5
Sturdy and Bright!
Number of Items: 2
Sturdy and bright! Great for the driveway
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 18, 2026
★★★★★ 1
Extremely Overpriced
Number of Items: 4
It doesn’t hold charge too long , especially if it’s not on a perfectly bright sunny day without clouds. Even at that , It will only be able to light up for maybe two or three hours at best , and not very bright at all. Construction and materials are of good quality that’s why the one start or else zi would gave given a zero if i could. it is way overpriced for what it is. I am disappointed for what I paid and the amount of production I get from it. Would have returned it if I haven’t installed them and threw away the boxes.
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Reviewed in the United States on December 9, 2025
★★★★★ 5
Quality enclosure and battery. Looks great.
Number of Items: 4
Quality metal enclosure. Look great. Two color levels. Charge even in indirect sunlight just fine. I have now bought 12 of these lights.
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Reviewed in the United States on November 1, 2025
★★★★★ 5
Very durable and designed to last a long time
Number of Items: 2
I've had a pair of these lights for 7-8 years and would still be using them with no issues if a naughty racoon hadn't taken an interest in them and broken the glass on one of them. I was delighted to find that the identical looking ones (operate slightly differently) were still available.
They are extremely simple to put together (just screw together the durable metal pieces) and turn them on to the chosen brightness. It couldn't be much simpler.
I also have other Gama Sonic solar lights and they are every bit as good.
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Reviewed in the United States on May 4, 2024
★★★★★ 3
Gama lights
Number of Items: 4
3 out of 4 are great. One did not work right away. Company send 2 extra battery packs. But still one bad unit. Talking now about options. Company seems to have good customer service. But bad light definetly an issue. 1 of 4 bad.
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Reviewed in the United States on June 9, 2026
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