Fits 2014-2023 Ram 2500 4x4 models equipped with factory air ride suspension.

Correct your truck's stance while maintaining the full functionality of your OEM air suspension system. These Carli Suspension leveling spacer blocks are engineered to provide a clean, level look without compromising the load-leveling capabilities or ride quality of the factory air springs. By repositioning the air bags, these spacers ensure the system operates within its intended travel range even after leveling the vehicle, preventing over-extension and maintaining a plush ride.

• Designed specifically for factory air ride-equipped Ram 2500 4x4 trucks
• Maintains factory load-leveling functionality and ride quality
• Durable construction engineered to withstand heavy towing and hauling
• Includes necessary hardware for a direct installation
• Corrects suspension geometry to accommodate larger tire packages and improve aesthetics

Fits 2014-2023 Ram 2500 4x4 models equipped with factory rear air ride suspension.

Lifting a Ram 2500 with factory air suspension requires more than just longer shocks; the rear air bags must be relocated to maintain their proper operating range. These Carli Suspension 3-inch spacers bridge the gap between the axle and the factory airbag, ensuring the bellows are not overextended when the suspension cycles. This maintains the load-leveling functionality and ride quality of your OEM system while accommodating the increased ride height.

• Engineered for 3-inch rear lift applications
• Maintains correct airbag geometry and travel limits
• Heavy-duty steel construction for maximum durability under load
• Bolts directly to factory mounting points for a secure installation
• Designed specifically for Ram 2500 4x4 Factory Air Ride systems

Fits 2016-2023 Ram 3500 trucks equipped with factory Auto Leveling Air Suspension (ALAS).

When lifting or leveling a Ram 3500 with the factory ALAS system, the rear ride height sensors require adjustment to maintain proper suspension geometry and bag pressure. These Carli Suspension extended sensor links replace the shorter factory units, allowing the suspension computer to accurately read the vehicle's position at the new, increased height. This ensures the air bags remain properly inflated and the auto-leveling system functions as intended without throwing error codes or causing a harsh ride.

• Specifically designed for 2016-2023 Ram 3500 with factory ALAS
• Corrects ride height sensor geometry on lifted or leveled trucks
• Prevents over-extension of the factory sensor arm
• Durable construction suited for heavy-duty towing and off-road use
• Direct bolt-on replacement for factory sensor links

Fits 2013-2024 Lexus GS200t/GS350, IS200t/IS300/IS350, and RC200t/RC300/RC350 RWD models.

Lower your Lexus up to 4.0 inches (101.6mm) from factory ride height with the Air Lift Performance rear air suspension kit. This system is engineered to provide an aggressive stance without sacrificing the refined comfort and handling expected of a Lexus sedan or coupe. Featuring performance-tuned shocks with 32 levels of damping adjustment, you can precisely tune the suspension from a soft, compliant street ride to a firm, responsive setup for spirited driving.

The kit features progressive-rate air bellows for superior load support and ride quality, capped with CNC-machined T6061 aluminum end caps finished in silver anodizing for maximum corrosion resistance. To ensure long-term durability in extreme climates, these components are torture-tested for over 1 million cycles on hydraulic rigs at temperatures ranging from -30°F to 150°F.

• Up to 4.0-inch (101.6mm) rear drop from stock height
• 32-level adjustable damping for soft to firm ride control
• Silver-anodized T6061 aluminum air spring end caps
• Progressive-rate air bellows for enhanced handling dynamics
• Hydraulic torture-tested for over 1 million cycles
• Includes all necessary performance shocks and hardware

Fits 2005-2012 Nissan Pathfinder (LE, S, SE, SE Off-Road, Silver Edition, SV, XE).

The Air Lift 1000 Air Spring Kit (MPN 60810) is designed to provide up to 1,000 lbs of load-leveling capacity for your Nissan Pathfinder. These adjustable air helper springs install directly inside your vehicle's rear coil springs to eliminate common suspension issues such as rear-end sag, trailer sway, and bottoming out. By distributing weight more evenly, they improve steering, braking, and overall vehicle handling whether you are towing a boat or hauling heavy cargo.

Constructed from tough, molded polyurethane, these air springs are built for durability and long-term service. The system is fully adjustable, allowing you to add air pressure when towing and reduce it for a comfortable, factory-like ride when unloaded. The kit includes all necessary air lines, fittings, and hardware for a straightforward installation using common hand tools.

• Up to 1,000 lbs. of load-leveling capacity
• Fits inside factory rear coil springs to prevent sag and bottoming out
• Manufactured from durable molded polyurethane
• Fully adjustable air pressure for varying load conditions
• Includes quick-connect air fittings and installation hardware
• Manufacturer Part Number: 60810
• Limited Lifetime Warranty and 60-day ride satisfaction guarantee

Fits select 2013-2017 Honda Accord (9th Gen) and 2015-2020 Acura TLX (Base and SH-AWD).

The Air Lift Performance 76014 front air suspension kit is designed to provide maximum height adjustability without compromising chassis control. This kit enables a drop of up to 4.5 inches (115mm) from factory ride height, featuring progressive-rate double-bellows air springs integrated with high-performance monotube shocks. The threaded-body shocks allow for precise height tuning, while 32 levels of damping adjustment and adjustable camber plate upper mounts give you total control over ride quality and handling response.

• Maximum Drop: 4.5 in. (115mm) below stock height.
• Air Springs: Progressive-rate double-bellows for optimal spring rate and clearance.
• Shock Type: High-performance monotube with 32 levels of damping adjustability.
• Hardware: T6061 aluminum air spring end caps (silver anodized), spherical bearing upper mounts, and braided stainless steel leader hoses.
• Fitment: Includes threaded and adjustable lower mounts for a custom fit.
• Testing: Key components torture-tested to 1 million cycles on a hydraulic rig from -30°F to 150°F.

Includes all necessary mounting hardware and detailed installation instructions to replace your factory front struts. Part number: 76014.

Universal fitment for coil-sprung vehicles with internal coil dimensions of 4.50 inches in diameter and 7.50 inches in length.

The Air Lift 1000 Universal Air Spring Kit is a versatile load-support solution designed to install directly inside your vehicle's factory open coil springs. By adding up to 1,000 lbs of load-leveling capacity, these air springs effectively eliminate rear-end squat, correct poor headlight aim, and improve overall stability when hauling heavy loads or towing. Constructed from durable, molded polyurethane, these springs are engineered to withstand rigorous use while providing a smoother, more controlled ride by soaking up road bumps and preventing bottoming out.

• Load Capacity: Up to 1,000 lbs of leveling support (Note: Do not exceed vehicle GVWR).
• Construction: Made from tough, molded polyurethane for maximum durability and longevity.
• Installation: Mounts inside the coil spring; requires measuring available height and diameter for fitment.
• Kit Contents: Two (2) Air Lift 1000 air springs, air line, tee fitting, zip ties, two (2) Schrader valves, two (2) heat shields with clamps, and air spring spacers (if applicable).
• Specifications: Fits 4.50" minimum diameter and 7.50" maximum length applications.
• Manufacturer Part Number: 60915

Each kit includes a detailed, fully-illustrated installation manual and is backed by Air Lift's Limited Lifetime Warranty and 60-day money-back guarantee.

The Air Lift 1000 Universal Air Spring Kit (MPN 60904) provides up to 1,000 lbs of load-leveling capacity for vehicles equipped with open coil springs. By installing directly inside the factory coil springs, these air springs effectively eliminate rear-end squat, correct poor headlight aim, and prevent bottoming out during towing or heavy hauling.

Each spring is constructed from durable, molded polyurethane to ensure longevity and consistent performance under load. This universal kit is designed for coil springs with a minimum inside diameter of 3.50 inches and a maximum available height of 7.75 inches. The adjustable air pressure allows you to customize the support level, restoring a level ride height and improving steering and braking control.

• Provides up to 1,000 lbs of load-leveling capacity (do not exceed vehicle GVWR)
• Fits coil springs with 3.50" minimum diameter and 7.75" maximum length
• Constructed from tough, molded polyurethane
• Complete kit includes 2 air springs, air lines, tee, Schrader valves, and zip ties
• Includes heat shields and spacers where applicable
• Manufacturer Part Number: 60904
• Limited Lifetime Warranty with a 60-day money-back guarantee

Fits select 1960-2019 Chevrolet, GMC, Ford, and Mercury models. These Ridetech HQ Series Rear ShockWaves provide an integrated air spring and shock solution for improved ride quality and adjustable handling. Part of the 8000 Series, this kit features a 5.2-inch stroke shock paired with a 5-inch diameter rolling sleeve air spring to deliver a smooth, compliant ride with the benefit of adjustable air pressure for varying loads.

• Manufacturer Part Number: 21150801
• Series: HQ (Handling Quality) 8000 Series
• Stroke: 5.2-inch shock travel
• Air Spring: 5-inch diameter rolling sleeve
• Mounting: 1.7-inch eye mount with .625-inch bearings
• Adjustability: Integrated rebound damping adjustment
• Included Hardware: Pair of ShockWaves, 1/2-inch bearing spacers, and 5/8-inch bearing spacers

The HQ Series utilizes impact-forged aluminum bodies and adjustable valving, allowing you to fine-tune the rebound setting to match your driving style and vehicle weight. The rolling sleeve design is ideal for applications where space is limited but maximum travel and ride comfort are required.

Fits select 1960-1964 Ford Galaxie, Country Sedan, and Ranch Wagon, plus 1961-1964 Mercury Monterey, Marauder, and Colony Park models.

Ridetech HQ (Handling Quality) Series ShockWaves replace your factory front springs and shocks with an integrated air suspension solution designed for improved handling and ride height adjustability. These units feature an impact-forged aluminum shock body and an internal monotube design for consistent damping and superior heat dissipation. With 24 levels of rebound adjustment, you can precisely tune the suspension to your driving preference, whether you are looking for a soft cruising ride or firm cornering performance.

• Includes one pair of front HQ Series ShockWaves
• Integrated 1/4" airline fittings
• Rebound-adjustable shocks for custom-tuned damping
• High-strength air springs provide reliable load support
• Billet aluminum construction for long-term durability
• Manufacturer Part Number: 12162401

Fits 2025 Toyota 4Runner 4WD (Limited, Platinum, and SR5).

The Air Lift Performance LoadLifter 5000 air spring kit provides up to 5,000 lbs. of load-leveling capacity, designed to eliminate the common problems associated with heavy towing and hauling. By supporting the rear suspension, this kit prevents rear-end squat, trailer sway, and body roll, ensuring your vehicle maintains proper weight distribution for optimal braking and steering control.

The 57384 kit features a bolt-on design that installs using the vehicle's existing mounting points, requiring no drilling into the frame. The air springs are fully adjustable from 5 to 100 PSI, allowing you to tune the ride height and stiffness based on your specific cargo or trailer tongue weight. Each kit is torture-tested for longevity and includes all necessary hardware for a complete installation.

• Up to 5,000 lbs. of load-leveling capacity (do not exceed vehicle GVWR)
• Fully adjustable air pressure from 5 to 100 PSI for precise control
• Direct bolt-on installation with no drilling required
• Eliminates sag, bottoming out, and headlight aim issues
• Includes heavy-duty air springs, brackets, air lines, and installation hardware
• Manufacturer Part Number: 57384
• Limited lifetime warranty with 60-day ride satisfaction guarantee

Fits 2017-2024 Nissan Titan (S, SV, SL, PRO-4X, Platinum Reserve).

The Air Lift LoadLifter 5000 (MPN 57331) is a heavy-duty air helper spring system engineered to provide up to 5,000 lbs. of load-leveling capacity. Designed specifically for the Nissan Titan, these air springs mount between the frame and the existing leaf springs to eliminate rear-end sag, reduce trailer sway, and prevent bottoming out when towing or hauling near the vehicle's Gross Vehicle Weight Rating (GVWR).

• Up to 5,000 lbs. of load-leveling capacity for heavy towing and hauling.
• Fully adjustable from 5 to 100 PSI for precise control over ride height and comfort.
• Eliminates squat, restores proper headlight aim, and improves steering and braking stability.
• Rugged construction featuring durable air springs and application-specific mounting hardware.
• Includes a limited lifetime warranty and a 60-day ride satisfaction guarantee.
• Manufacturer Part Number: 57331.

This kit includes two air springs, brackets, air lines, Schrader valve, and all necessary installation hardware with a fully-illustrated manual.

Fits 2017-2026 Ford F-250 and F-350 Super Duty models (SRW and DRW).

The Air Lift LoadLifter 5000 Ultimate kit (MPN 88391) provides up to 5,000 lbs of load-leveling capacity to eliminate rear-end sag, trailer sway, and bottoming out. This series features an exclusive internal jounce bumper made of closed-cell urethane foam, allowing the air springs to be safely run with zero air pressure. This internal cushion absorbs road shock and protects the vehicle when carrying heavy loads, even if the air pressure is low.

• Up to 5,000 lbs of load-leveling capacity (do not exceed GVWR)
• Internal urethane jounce bumper allows for maintenance-free operation at 0 PSI
• Fully adjustable air pressure from 5 to 100 PSI
• No-drill installation: bolts to factory mounting points on the frame
• 2-ply fabric reinforced air springs for maximum durability
• Compatible with most in-bed hitches
• Upper and lower roll plates included to protect springs from sharp bracket edges

Kit Includes: Two air springs with internal jounce bumpers, mounting brackets, air lines, Schrader valve, roll plates, and all necessary installation hardware.

Fits 2013-2025 Nissan Pathfinder models (including Platinum, Rock Creek, S, SL, SV, and Hybrid trims).

Restore proper ride height and vehicle stability with the Air Lift 1000 Series air spring kit. Designed to support your factory suspension when towing or hauling heavy loads, these air springs provide up to 1,000 lbs of load-leveling capacity. By installing directly inside your vehicle's rear coil springs, they effectively eliminate common issues such as rear-end squat, trailer sway, poor headlight aim, and bottoming out.

Constructed from rugged, durable materials, these air springs are adjustable from 5 to 35 PSI, allowing you to fine-tune the support based on your specific load. Whether you are hauling cargo or towing a camper, the increased stability ensures better steering control and braking performance. Every kit is torture-tested to 1 million cycles on a hydraulic test rig to ensure long-term durability under demanding conditions.

• Up to 1,000 lbs of load-leveling capacity
• Adjustable air pressure from 5 to 35 PSI
• Installs inside existing rear coil springs
• Includes air springs, air lines, and all necessary mounting hardware
• Helps prevent body roll and improves overall ride comfort
• Manufacturer Part Number: 60838

Fits select 2008-2022 Toyota Land Cruiser and Sequoia, Infiniti QX80, and Lexus LX570. Firestone Coil-Rite air helper springs are engineered to improve your vehicle’s ride quality and stability by working within your existing rear coil spring suspension. These air springs provide a variable spring rate, allowing you to level your SUV under heavy loads and maintain proper headlight aim, steering control, and braking effectiveness.

Constructed from durable, elastic polyurethane, these air springs are designed to withstand harsh road conditions and extreme temperatures. By adjusting the air pressure, you can easily adapt the suspension to varying load weights and road surfaces, preventing the vehicle from bottoming out and reducing premature tire wear.

• Provides 500–1,000 lbs of load-leveling capacity per set (do not exceed vehicle GVWR)
• Made from high-strength, durable polyurethane
• Operating temperature range: -40°F to 180°F (-40°C to 82°C)
• Installs directly inside the existing rear coil springs
• Adjustable air pressure for custom load support
• Manufacturer Part Number: 4164

Fits select 2007-2026 Audi, Buick, Chevrolet, Ford, GMC, Hyundai, Kia, and Volkswagen models including A3, Q3, Escape, Tiguan, Jetta, and GTI (2.0T).

The Firestone Coil-Rite Rear Air Helper Spring Kit provides a variable spring rate to level your vehicle when towing or hauling heavy cargo. By installing these durable polyurethane air springs inside your existing rear coil springs, you gain adjustable support that prevents sagging, improves steering response, and maintains proper headlight alignment. Unlike static suspension upgrades, Coil-Rite allows you to fine-tune the stiffness by adjusting air pressure, making it as easy to adapt as inflating a tire.

• Supports 500–1,000 lbs per set (do not exceed vehicle GVWR)
• Constructed from high-strength, elastic polyurethane for long-term durability
• Operating temperature range: -40°F (-40°C) up to 180°F (82°C)
• Improves braking effectiveness and overall vehicle balance under load
• Protects suspension components by preventing bottoming out on rough roads
• Manufacturer Part Number: 4176

This complete kit includes two air helper springs, air lines, inflation valves, and all necessary hardware to bolt into your factory rear coil spring configuration.

Fits select 2007-2022 Lincoln MKC, Nissan Rogue, and Volkswagen Atlas, Beetle, Jetta, and Passat (2.0T).

Firestone Coil-Rite air helper springs provide a variable spring rate to support your vehicle's existing coil spring suspension. These durable polyurethane air bags seat directly inside your factory coil springs, allowing you to level the vehicle when hauling heavy loads or towing. By adjusting the air pressure, you can eliminate sagging, improve steering control, and maintain proper headlight aim for safer operation under load.

Constructed from high-strength, elastic polyurethane, these springs are built to withstand harsh road conditions while remaining flexible in extreme temperatures. The Coil-Rite system allows for independent inflation, giving you the ability to compensate for off-center loads and significantly reducing the risk of bottoming out on rough terrain.

• Manufacturer Part Number: 4175
• Load Support: 500–1,000 lbs. per set (do not exceed GVWR)
• Material: Durable, elastic polyurethane construction
• Operating Temperature Range: -40°F to 180°F (-40°C to 82°C)
• Installation: Fits inside existing rear coil springs
• Adjustable spring performance via inflation pressure
• Includes all necessary hardware for installation

Fits select 2007-2018 Jeep Wrangler, Wrangler JK, and 2007-2009 Toyota FJ Cruiser.

The Firestone Coil-Rite Air Helper Spring Kit (MPN 4173) is engineered to enhance the performance and ride quality of vehicles equipped with rear coil spring suspensions. By installing these durable polyurethane air springs inside your existing factory coils, you create a variable spring rate that levels your vehicle during heavy loading or towing. This system allows for precise air pressure adjustments, enabling you to maintain stability, keep headlights properly aimed, and improve braking effectiveness across varying road conditions.

• Support Capacity: 500-1,000 lbs per set (do not exceed vehicle GVWR)
• Material: Durable, elastic polyurethane construction
• Operating Temperature: -40°F (-40°C) to 180°F (82°C)
• Key Benefits: Improves steering control, reduces tire wear, and prevents bottoming out
• Adjustability: Air pressure can be tuned to match specific load requirements
• Mounting: Designed to fit inside existing rear coil springs
• Manufacturer Part Number: 4173

Fits select 2007-2019 Hyundai Santa Fe, Santa Fe Sport, and Veracruz, Jeep Liberty, and Lincoln MKZ (2.0T).

Firestone Coil-Rite air helper springs are engineered to install directly inside your vehicle's existing rear coil springs. By adding a variable spring rate, these air springs allow you to level your vehicle and maintain proper ride height even when hauling heavy loads or towing. Adjusting the air pressure is as simple as inflating a tire, giving you precise control over suspension firmness and load support.

Constructed from durable, elastic polyurethane, these springs are built to survive harsh road conditions and extreme environments. This kit effectively helps maintain steering control, improves braking performance, and keeps headlights correctly aimed by preventing rear-end sag.

• Supports 500–1,000 lbs per set (do not exceed vehicle GVWR)
• Operating temperature range: -40°F to 180°F (-40°C to 82°C)
• Material: High-strength polyurethane construction
• Provides adjustable spring rates for varying load conditions
• Reduces bottoming out and uneven tire wear
• Includes air springs, air line, inflation valves, and hardware
• Manufacturer Part Number: 4170

Fits select 2004-2022 Toyota Sienna, Scion xA, Chevrolet Uplander, Buick Terraza, and Saturn Relay.

The Firestone Coil-Rite Rear Air Helper Spring Kit (4155) is engineered to provide a variable spring rate for vehicles with coil spring suspensions. These durable polyurethane air springs install directly inside your existing rear coil springs, allowing you to level your vehicle and improve handling when hauling heavy loads or towing. By adjusting the air pressure, you can compensate for varying weights to maintain a level ride, which ensures effective braking, steering, and proper headlight aim.

• Load Support: Supports between 500-1,000 lbs per set (not to exceed vehicle GVWR).
• Adjustable Performance: Variable spring rate can be tuned by inflating or deflating the air springs like a tire.
• Durable Construction: Made of high-strength, elastic polyurethane for long-term stability and comfort.
• Temperature Rated: Operating range from -40°F (-40°C) up to 180°F (82°C).
• Stability Improvement: Reduces bottoming out, improves balance, and helps prevent uneven tire wear.
• Manufacturer Part Number: 4155

Fits select 2004-2022 Nissan Armada and Pathfinder, and 2005-2009 Infiniti QX56. This Firestone Coil-Rite air helper spring kit is engineered to provide a smoother, more level ride for vehicles equipped with factory coil spring suspensions. By installing these durable polyurethane air springs inside your existing rear coils, you create a variable spring rate that adapts to heavy loads and varying road conditions.

The Coil-Rite system allows for manual air pressure adjustment, letting you stiffen the suspension when towing or hauling and soften it for unladen commuting. This adjustable support helps maintain proper headlight aim, improves braking effectiveness, and reduces tire wear by preventing the rear end from sagging or bottoming out under pressure.

• Support Capacity: 500–1,000 lbs per set (do not exceed vehicle GVWR)
• Material: High-strength, elastic polyurethane
• Temperature Rating: Effective from -40°F (-40°C) to 180°F (82°C)
• Installation: Fits inside original equipment (OE) rear coil springs
• Part Number: 4150

Kit includes two air helper springs, air line tubing, inflation valves, and all necessary hardware for a complete installation.

Fits select 1998-2017 Honda, Hyundai, Isuzu, Scion, and Toyota models including Passport, Rodeo, Accent, Prius, and Yaris (see fitment list below).

Firestone Coil-Rite air helper springs are designed to fit inside your vehicle's existing rear coil springs to provide a variable spring rate. By adjusting the air pressure, you can level your vehicle under heavy loads, which improves steering control, braking effectiveness, and headlight aim while preventing the suspension from bottoming out.

Constructed from durable, high-strength elastic polyurethane, these air springs provide additional support between 500 and 1,000 lbs. per set (load-leveling capacity, not to exceed GVWR). This kit allows you to maintain a level ride height and stability even under adverse road conditions or when hauling cargo.

• Material: Durable elastic polyurethane
• Support Capacity: 500–1,000 lbs per set
• Operating Temperature: -40°F (-40°C) to 180°F (82°C)
• Installation: Inserts into factory rear coil springs
• MPN: 4136

Fits select 1998-2021 Toyota 4Runner, 2007-2014 Toyota FJ Cruiser, and 2013-2018 Lexus LX570 (Base).

Improve your vehicle's ride quality and load-carrying capability with the Firestone Coil-Rite Rear Air Helper Spring Kit. These air springs are designed to be installed inside your vehicle's existing rear coil springs, creating a variable spring rate that addresses sag and instability under heavy loads. By adjusting the air pressure, you can level your vehicle to maintain proper headlight aim, improve steering geometry, and enhance braking effectiveness, whether you are hauling gear or towing a trailer.

Constructed from durable, elastic polyurethane, these Coil-Rite inserts are built to withstand the rigors of both on-road and off-road environments. They function as a cushion to prevent bottoming out and reduce tire wear by maintaining an even distribution of weight across all four wheels.

• Provides 500–1,000 lbs of load-leveling capacity per set (do not exceed GVWR)
• Made from high-strength, elastic polyurethane for long-term durability
• Operating temperature range: -40°F (-40°C) to 180°F (82°C)
• Adjustable air pressure allows for fine-tuning based on specific load requirements
• Helps maintain vehicle stability and reduces suspension fatigue
• Manufacturer Part Number: 4135

Fits select 1991-2022 Toyota Land Cruiser and Sequoia, and Lexus LX450 and LX470. Firestone Coil-Rite air helper springs are engineered to fit inside your vehicle's existing rear coil springs to provide a variable spring rate. By supporting the load from within the coil, these polyurethane air springs eliminate sag, maintain a level ride height, and improve overall steering and braking control during heavy loading or towing.

• Supports 500–1,000 lbs. per set (do not exceed vehicle GVWR)
• Made from durable, elastic polyurethane for long-term stability
• Adjustable air pressure allows for fine-tuning based on load or road conditions
• Operating temperature range: -40°F (-40°C) to 180°F (82°C)
• Prevents bottoming out and reduces uneven tire wear
• Includes air springs, air line, and all necessary hardware for installation
• Manufacturer Part Number: 4124

Fits select 1993-2026 Audi, Buick, Chevrolet, GMC, Infiniti, Jeep, Nissan, and Toyota vehicles.

The Firestone Coil-Rite Rear Air Helper Spring Kit is engineered to provide a smoother ride and improved load-leveling for vehicles equipped with coil spring suspensions. By installing directly inside your existing coil springs, these air springs create a variable spring rate that can be adjusted as easily as inflating a tire. This system effectively corrects vehicle sag under heavy loads, improves steering and braking response, and prevents bottoming out on adverse road surfaces.

Constructed from durable, elastic polyurethane, these air springs are built to withstand demanding environments while maintaining vehicle stability and reducing tire wear. Whether you are hauling gear or towing, the Coil-Rite system allows for precise air pressure control to match your specific loading needs.

• Supports 500–1,000 lbs. per set (do not exceed vehicle GVWR)
• Operating temperature range: -40°F (-40°C) to 180°F (82°C)
• Manufactured from high-strength polyurethane
• Improves headlight aiming and vehicle balance
• Installation hardware included
• Manufacturer Part Number: 4118

Fits select 1981-2021 Cadillac, Chevrolet, Ford, GMC, Hummer, Lincoln, and Mercury vehicles with rear coil spring suspensions.

The Firestone Coil-Rite Air Helper Spring Kit provides a variable spring rate to manage heavy loads and improve ride quality. These air springs install directly inside your vehicle's existing rear coil springs, providing additional support that works in tandem with the factory suspension. By adjusting the air pressure, you can level your vehicle while towing or hauling, ensuring proper headlight aim, consistent steering response, and more effective braking performance even under adverse road conditions.

Made from durable, elastic polyurethane, these helper springs are designed for longevity and reliable performance in extreme climates. They allow you to fine-tune your suspension as easily as inflating a tire, offering a customizable solution for varying cargo weights.

• Supports 500–1,000 lbs per set (do not exceed vehicle GVWR)
• Constructed from high-strength, durable polyurethane
• Adjustable air pressure for varying load and road conditions
• Operating temperature range: -40°F to 180°F (-40°C to 82°C)
• Improves steering, balance, and braking effectiveness
• Reduces tire wear and prevents bottoming out
• Manufacturer Part Number: 4108