Firestone

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Product Specification:

SKU:FIR4100

MPN: 4100

UPC: 767555020630

Weight: 2.8 lb

Inventory: 4

Type: Air Suspension Kits

Description

Vehicle Fitment

• Universal Front Coil Spring Suspension Helper - Fits Many Trucks/SUVs/Vans

Features

• Coil-Rite front air helper spring kit designed to support coil spring suspensions
• Made from durable elastic polyurethane for long service life
• Provides adjustable spring rate by controlling air pressure
• Helps maintain level ride height when carrying cargo or towing
• Improves vehicle stability, handling, and braking performance
• Reduces bottoming out and absorbs road shock
• Manual inflation via included valves for simple adjustability
• No-drill installation for many compatible vehicles

Specifications

• Brand: Firestone Coil-Rite
• Part Number: 4100
• Type: Front air helper spring kit
• Material: Elastic polyurethane air springs
• Support Capacity: ~500-1,000 lbs per set
• Pressure Range: ~5-45 PSI adjustable
• Position: Front suspension (coil-spring vehicles)
• Installation: Typically 1-2 hours

Included Components

• 2x Coil-Rite air helper springs
• Supports for installation
• Air line tubing
• 2x Manual inflation valves
• All required mounting hardware
• Installation instructions

Product Description

The Firestone 4100 Coil-Rite Front Air Helper Spring Kit is designed to provide adjustable support for vehicles equipped with front coil spring suspensions. These air helper springs mount inside the existing coil springs and let you tailor the spring rate by adding or releasing air, helping the suspension better support extra weight without sacrificing ride quality.

By adjusting air pressure (typically around 5-45 PSI), you can reduce sag when carrying cargo or towing, improve vehicle stability, enhance steering and braking performance, and decrease bottoming out on rough roads. The elastic polyurethane air springs are built for durability across a wide range of temperatures and a long service life. Installation is straightforward for many compatible vehicles, and all necessary springs, hardware, air lines, and manual valves are included for a complete setup.