Transform your vehicle's suspension performance with the Firestone Rear Coil-Rite Air Helper Spring Kit 4135, meticulously crafted for coil spring suspensions. This kit boosts your vehicle’s handling, braking, and overall stability, especially under load. With its innovative design, it fits effortlessly within your existing coil springs, allowing adjustable air pressure to suit varying load demands and road conditions. Made from robust, elastic polyurethane, the Coil-Rite ensures long-lasting performance in diverse climates.Whether you own a Toyota 4Runner, FJ Cruiser, or Lexus LX570, this kit is an essential upgrade that prevents bottoming out and maintains level balance. By sustaining optimal load distribution, it guarantees your headlights are perfectly aimed and extends tire lifespan. Installation is made easy with no drilling required, and the kit includes all necessary hardware and inflation valves, making it a must-have for both DIY enthusiasts and professional mechanics.

• Improves vehicle stability and steering balance
• Prevents bottoming out under heavy loads
• Maintains tire wear by ensuring level vehicle
• Easy installation with no drilling required
• Adjustable air pressure for optimal ride comfort
• Durable polyurethane construction
• Perfect for Toyota and Lexus models

Position:	Rear
Material:	Elastic Polyurethane
Load Support:	500-1000 lbs.
Operating Temperature:	-40°F to 180°F
Weight:	2.5 lbs.
Dimensions:	9x9x11 inches
Includes:	Air Springs, Supports, Hardware, Valves
Installation:	No Drilling Required
California Proposition 65:	No
Compatibility:	Lexus LX570, Toyota 4Runner and FJ Cruiser

• 1998-2017 Toyota 4Runner | Position: Rear | Note: Incl. Air Helper Springs; Supports; Hardware; Air Line; And Inflation Valves; No Drilling Required;Install Time 2 Hours~No Drilling Required
• 2007-2014 Toyota FJ Cruiser | Position: Rear | Note: Incl. Air Helper Springs; Supports; Hardware; Air Line; And Inflation Valves; No Drilling Required;Install Time 2 Hours~No Drilling Required
• 2013-2016 Lexus LX570 | Position: Rear | Note: Incl. Air Helper Springs; Supports; Hardware; Air Line; And Inflation Valves; No Drilling Required;Install Time 2 Hours~No Drilling Required
• 2017-2018 Lexus LX570 | Position: Rear | Note: Incl. Air Helper Springs; Supports; Hardware; Air Line; And Inflation Valves; No Drilling Required
• 2018-2021 Toyota 4Runner | Position: Rear | Note: Incl. Air Helper Springs; Supports; Hardware; Air Line; And Inflation Valves; No Drilling Required