---
product_id: 12429200
title: "Firestone 4135 Rear Coil Rite Air Spring kit for FJ Cruiser 4Runner LX 570"
brand: "firestone"
price: "€ 251.67"
currency: EUR
in_stock: true
reviews_count: 9
category: "Firestone"
url: https://www.desertcart.nl/products/12429200-firestone-4135-rear-coil-rite-air-spring-kit-for-fj
store_origin: NL
region: Netherlands
---

# Fits 1998-2012 Toyota 4Runner rear axle Supports 500-1000 lbs load 1-hour install Firestone 4135 Rear Coil Rite Air Spring kit for FJ Cruiser 4Runner LX 570

**Brand:** firestone
**Price:** € 251.67
**Availability:** ✅ In Stock

## Summary

> 🚙 Elevate your ride—stability and comfort that won’t quit!

## Quick Answers

- **What is this?** Firestone 4135 Rear Coil Rite Air Spring kit for FJ Cruiser 4Runner LX 570 by firestone
- **How much does it cost?** € 251.67 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/products/12429200-firestone-4135-rear-coil-rite-air-spring-kit-for-fj)

## Best For

- firestone enthusiasts

## Why This Product

- Trusted firestone brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Precision Fit:** Specifically engineered for 1998-2012 Toyota 4Runner rear coil springs.
- • **Durable Comfort:** Made from elastic polyurethane for long-lasting ride smoothness and reduced tire wear.
- • **Load-Leveling Power:** Supports up to 1,000 lbs to keep your ride stable under heavy loads.
- • **Effortless Installation:** Get back on the road in just 60 minutes with no drilling required.
- • **Enhanced Driving Control:** Improves braking, steering balance, and prevents bottoming out for safer handling.

## Overview

The Firestone 4135 Rear Coil-Rite Air Spring Kit is a durable, easy-to-install suspension upgrade designed for 1998-2012 Toyota 4Runner models. It fits inside existing coil springs to provide adjustable support for loads between 500 and 1,000 lbs, enhancing vehicle stability, braking, and handling. Made from elastic polyurethane, it ensures a smoother ride and reduces tire wear, backed by a limited lifetime warranty for original owners.

## Description

Firestone Coil-Rite Air Helper Springs Firestone air helper springs are designed to fit inside existing coil spring suspensions, creating a variable rate spring. These air helper springs are made of durable, elastic polyurethane providing years of comfort and stability to your vehicle. Coil-Rite air helper springs provide extra support for coil springs in cars, minivans, vans, light trucks, RVs and SUVs. The complete adjustability of these air helper springs will level your vehicle, provide a smoother ride, more effective braking and handling, even under heavy loading and adverse road conditions. Firestone's Coil-Rite air helper springs enable adjustment for varying loads and road conditions by inflating or deflating the air helper springs. Spring performance can be altered as easily as inflating a tire. The air springs will support 500-1000 lbs per set.(Note: Do not exceed the vehicle's recommended Gross Vehicle Weight Rating) Basic Kit includes everything for a quick installation: 2 Air springs Supports Hardware Air line Separate inflation valves for manual inflation Average Installation time 1 hour Features and Benefits of Coil-Rite air helper springs and air bag kits Increase Vehicle Stability Improve steering and balance Improve braking effectiveness Prevent bottoming out Maintain a level vehicle Keep headlights aimed on the road Reduce tire wear Firestone Limited Lifetime Air Spring Warranty Firestone Industrial Products Company LLC ("Firestone") warrants that its Ride Rite Air Spring Assembly will perform according to the manufacturer's specifications for as long as the vehicle on which the system was originally installed is owned by the original retail purchaser. This limited warranty does not include installation or other service charges for replacement. Warranty Period The Air Spring is warranted for as long as the original purchaser owns the vehicle on 2 Year / 200,000 mile warranty.

Review: Money well spent! - 3 years and no problems. I have these on my wife's as well as my own 4runner and love them on both vehicles. Handles the heavy loads and my high tongue weight trailers with easy, making travel much safer. Easy to install if you watch the YouTube video on how to install FIRST :) . Good stuff, money well spent.
Review: It does work. - Different than what I thought. The bag doesn’t hold weight, it just inflates inside the spring to keep it from compressing.

## Features

- 1998-2012 > Toyota > 4Runner
- ** NOTE: PRODUCT IMAGE MAY NOT BE VEHICLE SPECIFIC
- Do not use on lifted vehicles

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B005T7ZOKU |
| Best Sellers Rank | #334,244 in Automotive ( See Top 100 in Automotive ) #505 in Automotive Replacement Air Suspension Kits |
| Brand | Firestone |
| Customer Reviews | 3.8 3.8 out of 5 stars (75) |
| Date First Available | November 26, 2013 |
| Item Weight | 2.43 pounds |
| Item model number | 4135 |
| Manufacturer | Firestone |
| Manufacturer Part Number | 4135 |
| Model | Firestone |
| OEM Part Number | 4135 |
| Product Dimensions | 11.61 x 2.5 x 9.32 inches |
| Special Features | Air Spring Diameter: 4.75 inches, Air Spring Length: 7.50 inches, Capacity: 1,000 lbs., Drilling Required: No, Replacement Air Spring: 6024, Location: Fits Rear Axle |

## Images

![Firestone 4135 Rear Coil Rite Air Spring kit for FJ Cruiser 4Runner LX 570 - Image 1](https://m.media-amazon.com/images/I/71A3rJyZ5aL.jpg)

## Questions & Answers

**Q: Do i need te change my rear stock shock?**
A: No need to change the shock, but you will need to remove both to complete the installation.  If you are contemplating replacing the shocks with new ones, this would be a good time to do that.  These bags have worked great for me on keeping the 4Runner leveled out while carrying suitcases or towing trailers.  Great investment and helps to keep your driving safe.

**Q: Any 3rd gen 4Runner owners using these bags successfully with 891 rear springs (about 2.5" lift)?**
A: I'm using them in a 4th gen with FJ cruiser springs.  They work well for me.  They're not supposed to be compressed top/bottom to support the load.  They expand inside the coils to reinforce them.  You may have to play with your coil bumpstops.  It's says "not for lifted" vehicles though so I'd check with the manufacturer.

**Q: how much additional weight can these support?**
A: These can support a 500-1000 leveling capacity.

**Q: Will this fit 2014 ram 2500 with five inch rough country lift?**
A: Go to Firestone’s website. They have a find your kit feature.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Money well spent!
*by T***Y on September 20, 2016*

3 years and no problems. I have these on my wife's as well as my own 4runner and love them on both vehicles. Handles the heavy loads and my high tongue weight trailers with easy, making travel much safer. Easy to install if you watch the YouTube video on how to install FIRST :) . Good stuff, money well spent.

### ⭐⭐⭐⭐ It does work.
*by D***S on August 8, 2019*

Different than what I thought. The bag doesn’t hold weight, it just inflates inside the spring to keep it from compressing.

### ⭐ Missing parts
*by M***D on January 19, 2026*

Missing parts

## Frequently Bought Together

- Firestone Ride-Rite 4135 Coil-Rite; Air Helper Spring Kit; Rear; Incl. Air Helper Springs; Supports; Hardware; Air Line; And Inflation Valves; No Drilling Required; Number W237604135;
- Air Lift 21838 Union Tee, Silver

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*Product available on Desertcart Netherlands*
*Store origin: NL*
*Last updated: 2026-02-13*