Firestone Coil-Rite Air Helper Springs - Rear Axle
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2028 Nissan Pathfinder
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2028 Nissan Pathfinder
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Heavy gear in the back or a loaded trailer can make the rear sag, which throws off your steering, braking, and headlight aim. The Firestone Coil-Rite Air Helper Springs fit inside your existing rear coil springs to keep your ride level when hauling a heavy load. With an adjustable load-leveling capacity of at least 500 lbs?(at most 1,000 lbs), these air springs help maintain even load distribution so your handling and braking stay consistent and controlled.
Every trip is different, so the ability to dial in support matters. With manual inflation valves for each side, you can set anywhere between 5 psi and 35 psi to match how you’re loaded. Add pressure to reduce sag and body roll when towing or carrying uneven cargo, or drop it back down for a smoother ride when empty. Independent side-to-side adjustment makes it easy to level off-center loads for a stable, planted feel on the road.
When bumps and dips hit hard under load, these air springs absorb road shock before it reaches the frame. The extra cushion helps prevent bottoming out and softens contact between the axle and frame so your ride feels more controlled. By keeping weight balanced across both sides, steering stays steady and tires last longer.
Made of durable, elastic polyurethane, each coil insert is built to handle heavy loading and adverse road conditions without cracking or leaking. The kit includes air springs, brackets, hardware, air line, and separate valves for manual inflation. Switches, gauges, compressors, and tanks are sold separately if you want in-cab or onboard control later on. It’s a reliable setup that holds up through repeated use while keeping your suspension working like it should.
The construction material of the fittings may vary.
Customer Satisfaction Score:
98% were satisfied with this product
2% of customers were not satisfied
Ratings & Reviews
Off2mtns
12/14/2018
Still working great after a year. Knock on wood... no leaks to date. I would consider these essential equipment for towing, and would highly recommend for heavily loaded backcountry travels as well. I did try them near their max pressure on one trip with 5 people, roof top tent, and gear for a week of camping this summer and it was too much and felt very unsafe ped the pressure back to sub-30 psi after driving a few blocks and all was great after that!
Ryan G.
5/23/2018
After a year of regular use, these bags have been great. They keep my FJ level when towing and as a result steering while towing is vastly better.
Katrina D.
9/14/2023
It sounds to me like a warranty issue. For Firestone, they prefer to handle all of their own warranties. I will send you their contact information via email.
Wraymond P.
8/31/2018
Still working a year later.
Andrew
3/6/2020
Still works well, no issues. Its been a good investment .
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Ethan
6/25/2026
I had to take the right rear airbag and deflated it. I took a piece of mudflap about a quarter inch thick and put it on top of the airbag with a hole in the middle of the mudflap piece that gave more clearance between the car and the airbag valve. Now I have had no leaks for a year. With the least 9000 miles of towing and rough terrain.