Firestone FIR4108 Coil-Rite Rear Air Helper Spring Kit

If you're looking for a smoother ride for your vehicle that has a coil spring suspension, Firestone Coil-Rite air helper springs are what you need. Designed to fit inside existing coil springs to create a variable spring rate, Coil-Rite will level your vehicle and assist with more effective braking and handling, even under heavy loading and adverse road conditions.Coil-Rite enables you to control the air pressure in the air helper springs so you can make adjustments for varying loads and road conditions. Spring performance can be altered as easily as inflating a tire.Firestone Coil-Rite air helper springs are made of durable, elastic polyurethane, providing years of comfort and stability to your vehicle. The air springs will support 500-1000 lbs. per set (not to exceed vehicle's GVWR). Coil-Rite Air Helper Springs are designed to work in temperatures between 180deg F (82deg C) and -40deg F (-40deg C). Coil-Rite® Air Helper Spring Kit; Rear; Incl. Air Helper Springs; Supports; Hardware; Air Line; And Inflation Valves; No Drilling Required;

• Keep Headlights Aimed On The Road
• Improve Braking Effectiveness
• Improve Steering And Balance
• Increase Vehicle Stability
• Maintain A Level Vehicle
• Prevent Bottoming Out
• Reduce Tire Wear

The Firestone Coil-Rite FIR4108 Air Helper Spring Kit is designed for vehicles with rear coil spring suspension. The air helper springs install inside the existing coil springs to create a variable spring rate, helping maintain a level vehicle under changing loads while supporting improved handling, braking, steering, and stability.

Air pressure can be adjusted to suit varying loads and road conditions, allowing spring performance to be changed as easily as inflating a tire. Made from durable, elastic polyurethane, the springs are designed to provide comfort and stability and support 500 to 1,000 pounds per set, without exceeding the vehicle's gross vehicle weight rating. The operating temperature range is -40°F to 180°F.

Key Features & Performance Benefits

• Helps maintain a level vehicle under load
• Supports improved braking effectiveness and handling
• Helps improve steering, balance, and vehicle stability
• Helps prevent bottoming out and reduce tire wear

Key Product Specifications & Technical Data

• Brand: Firestone
• Part number: FIR4108
• Product type: Coil-Rite air helper spring kit
• Application position: Rear
• Suspension type: Coil spring suspension
• Support capacity: 500 to 1,000 pounds per set
• Material: Elastic polyurethane
• Operating temperature range: -40°F to 180°F

What's Included in the Box

The kit includes air helper springs, supports, hardware, air line, and inflation valves. No drilling is required.

Fitment

Listed for 2000–2010 Chevrolet Tahoe and GMC Yukon applications.

Air Freight Prohibited: false
Not Carb Approved: false
Ltl Freight Required: false
Prop 65: N
Part Type: automotive
Epa: N/A
Carb Acknowledgement Required: false
Regular Stock: t
Units Per Sku: 1