SuperPro Rear Suspension Lower Spring Isolator

2018–2023 Jeep Wrangler JL

SPF5572K

Overview:

The SuperPro 6.5mm Rear Suspension Lower Spring Isolator is engineered to provide lasting durability and consistent suspension performance for Jeep Wrangler JL models from 2018 through 2023. Designed to replace the factory rubber isolators, this OE height isolator ensures proper spring location and retention without the common issues of sagging or softening over time. Ideal for Jeep enthusiasts seeking a reliable suspension upgrade that maintains ride quality and handling precision throughout the life of their vehicle.

Constructed from SuperPro’s proprietary polyurethane compounds, this spring isolator resists degradation caused by heat, oil, and environmental exposure, delivering a permanent suspension solution that outperforms traditional rubber components. Whether you drive your Wrangler daily or take it off-road, this isolator helps maintain the integrity of your rear coil springs for a smoother, more controlled ride.

Key Features:

SuperPro’s rear spring isolator offers several advantages over standard rubber insulators, including:

• Manufactured from high-performance polyurethane for superior durability
• Maintains original equipment (OE) spring height for consistent suspension geometry
• Prevents spring sag and softening, ensuring long-term ride quality
• Resistant to oil, chemicals, and environmental wear
• Provides precise spring location and retention under all driving conditions
• Direct fit for Jeep Wrangler JL models 2018–2023, including multiple trims and special editions
• Improves suspension reliability without altering ride characteristics
• Easy to install with no modifications required

Construction & Design:

The isolator is crafted from SuperPro’s bespoke polyurethane compound, specifically formulated to withstand the harsh conditions that typically degrade rubber components. This material offers excellent resistance to compression set, ensuring the isolator maintains its shape and function over time. The design precisely matches the OE spring seat dimensions to provide a secure fit and optimal spring retention. This engineering focus results in a component that supports the coil spring effectively while isolating noise and vibration for a quieter, more comfortable ride.

Installation & Fitment:

Installation of the SuperPro rear spring isolator is straightforward and requires no special tools or modifications. It is designed as a direct replacement for the factory lower spring isolator on the rear suspension of Jeep Wrangler JL models from 2018 to 2023. This includes a wide range of trims such as Sport, Rubicon, Sahara, Willys, and special editions like the 80th Anniversary and Freedom models. Proper installation ensures the coil spring remains securely seated, preserving suspension geometry and ride height.

What's Included:

• One (1) SuperPro 6.5mm Rear Suspension Lower Spring Isolator (OE Height)

Ideal For:

This rear spring isolator is perfect for Jeep Wrangler JL owners who want to maintain or restore their vehicle’s suspension performance without compromising ride quality. It is especially beneficial for those who experience sagging or noise from worn rubber isolators, off-road enthusiasts seeking durable suspension components, and anyone looking for a long-lasting, maintenance-free solution to rear coil spring isolation.

SuperPro is an Australian suspension specialist known for high-performance polyurethane bushings, control arms, and sway bar components designed for both 4x4 and performance vehicles. Their parts are built to sharpen handling and improve durability compared with worn factory rubber, making them a common upgrade for enthusiasts chasing tighter response and longer-lasting suspension control.