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Coil-Rite Rear Air Spring Kit for LX 570 (2013–2021)

Sale price$158.89

Corgrit Identification Code: C-FIR-TQT2VQ63

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Corgrit — The Firestone Coil-Rite Rear Air Spring Kit adds adjustable support to the Lexus LX 570's rear suspension, helping it handle heavier loads without compromising everyday ride comfort. The air springs fit inside the factory coils and respond to air pressure changes, providing a firmer spring rate when carrying weight and a softer response when unloaded. With independent manual inflation, the system helps maintain balance, improve stability, and control suspension across changing conditions.

Key Features

• 1,000-Pound Load Capacity for Supplemental Support
• Variable Spring Rate Responds to Changing Cargo Weight
• Individual Inflation Valves Help Balance Rear Suspension Loads
• Durable Polyurethane Air Springs Install Without Drilling

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Air Spring Kit Specifications

The Coil-Rite system installs within the factory rear coil springs, using two elastic polyurethane air springs to provide adjustable supplemental support. Air pressure can be tailored to vehicle weight, increasing the effective spring rate under load while allowing a softer suspension response during unloaded driving.

Series
Coil-Rite
Fits
Lexus LX 570 (2013–2021)
Material
Polyurethane
Color Family
Blue
Finish Type
Matte
Minimum Inflation Pressure (psi)
5.00 psi
Maximum Inflation Pressure (psi)
35.00 psi
Rear Suspension Maximum Load Rating (lb)
1,000.00 lb
Minimum Operating Temperature (°F)
-40.00 °F
Maximum Operating Temperature (°F)
180.00 °F
Part Number
4135
Included Components
(1) Air Hose;
(2) Air Inflation Valves;
(2) Air Spring Mounting Plates;
(2) Air Springs;
(4) Washers;
(6) Cable Ties

Overview

This Coil-Rite Rear kit provides rear suspension support for different passenger and cargo loads. Installed inside the coil springs, the air springs supplement the factory suspension with adjustable support that responds to weight changes. The result is greater control over rear ride height and suspension behavior without replacing the original coil springs.

Support

The Coil-Rite air spring kit uses air pressure to create a variable spring rate. When the LX 570 carries additional passengers, luggage, or equipment, increasing pressure provides a firmer response to help support the added weight.

Control

Each air spring can be adjusted independently, compensating for unevenly distributed cargo and maintaining more balanced rear support. A more balanced load helps reduce body roll and contributes to improved vehicle stability.

Confidence

Added suspension support helps control excessive compression with heavier weight, improving handling and braking. The system also helps keep headlight beams level and reduces tire wear associated with an imbalanced suspension.

Comfort

The elastic air springs absorb road shock and soften the interaction between the rear axle and frame, moderating movement over rough surfaces, providing a steadier ride while helping prevent bottoming out when heavily loaded.