Firestone 4136 Coil-Rite Rear Air Helper Springs Kit for98-17 Honda/Isuzu/Toyota

Regular price: $126.95
Regular price: ~~$208.83~~
Sale price: $126.95

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Product Specification:

SKU:FIR4136

MPN: 4136

UPC: 767555097816

Weight: 2.3 lb

Type: Air Suspension Kits

Vehicle Fitment

1998-2002 Honda Passport (EX, LX, 3.2L)
2002-2004 Isuzu Axiom (Base, XS, 3.5L)
1998-2004 Isuzu Rodeo/Rodeo Sport (LS, LSE, S, 2.2L/3.2L/3.5L)
2004-2007 Scion xA (Base, 1.5L)
2008-2015 Scion xB (Base, 2.4L)
2010-2017 Toyota Prius (Base, Four, Five, 1.8L)
2007-2016 Toyota Yaris (Base, L, LE, SE, 1.5L)

Features

Improves load support and ride level under cargo or towing conditions
Installs inside existing rear coil springs without drilling
Durable polyurethane construction for long service life
Adjustable air pressure allows variable spring rate
Helps reduce rear squat and tire wear
Enhances vehicle stability, braking, and handling under load
Operates reliably in extreme temperatures
Maintains proper vehicle stance and headlight alignment

Specifications

Part Number: 4136
Application: Rear coil spring suspension
Air Spring Diameter: ~4.0 inches
Air Spring Length: ~8.0 inches
Capacity: ~1,000 lbs per set (varies by vehicle & GVWR)
No drilling required for most vehicles
Average installation time: 1-2 hours
Material: Polyurethane springs with steel support hardware

Included Components

2x Rear air helper springs
2x Support plates
1x Air line kit
2x Inflation valves
Mounting hardware (brackets, bolts)

Product Description

The Firestone 4136 Coil-Rite Rear Air Helper Springs Kit is designed for vehicles with rear coil springs that need extra load support and improved ride quality. These air springs fit inside the factory coils, providing adjustable support to keep your vehicle level under heavy cargo or towing conditions. The durable polyurethane construction ensures long-lasting performance while maintaining flexibility in a range of temperatures.

Air pressure can be easily adjusted to fine-tune the spring rate for light or heavy loads, reducing rear squat, improving stability, and enhancing braking and handling. Installation is straightforward, generally requiring 1-2 hours, and most vehicles do not need any drilling for proper fitment. This kit helps maintain proper stance and tire contact, making it ideal for drivers carrying heavy cargo or towing small trailers.