Swift Stacked Spring Adapter Kits: A Better Way to Combine Flat Wire and Round Wire Springs

The Right Adapter Can Make a Difference in a Stacked Spring Setup

Stacked spring combinations give racers another valuable tuning tool, but combining different spring designs also creates another area that needs to be addressed: how those springs interact with one another during suspension movement.

Swift Springs developed its Stacked Spring Adapter Kits to provide a light-weight, low-friction interface between flat wire and round wire springs.

Designed specifically to allow a flat wire spring to be used on a round wire spring, the Swift adapter helps maintain proper spring contact while allowing the springs to move naturally as the suspension compresses.

Like Swift's Thrust Sheets, the adapter system utilizes proprietary self-lubricating material and stainless steel washer sheets to help reduce friction and unwanted spring noise.

Designed for Flat Wire and Round Wire Spring Combinations

Stacking springs isn't simply about placing one spring on top of another.

When different spring designs are combined, the contact area between the springs becomes important. A flat wire spring and a round wire spring have different contact profiles, making the interface between them critical to maintaining predictable movement.

The Swift Stacked Spring Adapter is designed to provide that transition point.

The adapter allows racers to combine a flat wire spring with a round wire spring while maintaining a stable interface between the two. This creates a more controlled stacked spring package while allowing the springs to rotate and unwind as needed during compression.

For racers using stacked spring combinations as part of their suspension tuning strategy, that controlled movement can be an important part of maintaining consistency.

Let the Spring Move Naturally

One of the most important features of the Swift Stacked Spring Adapter is its ability to allow the spring to unwind as necessary under compression.

A coil spring naturally wants to rotate as it compresses. If that rotation is restricted by excessive friction, the spring can experience additional resistance at the contact point.

The Swift adapter system is designed to minimize that interference.

As the suspension cycles, the adapter and stainless steel washer sheets provide a low-friction surface that allows the spring to rotate more freely. This helps distribute the load more evenly and reduces the friction that can contribute to unwanted spring noise.

The goal isn't simply to hold the springs together. It's to allow the stacked spring combination to work naturally as the suspension moves.

Protecting the Shock Body Threads

Another important consideration when using stacked springs is what happens at the shock body.

The Swift Stacked Spring Adapter is designed so that when in contact, it will not harm the shock body's threads.

This is an important detail that can easily be overlooked when selecting components for a coilover system.

A properly designed adapter should provide the necessary interface between the components without creating unnecessary contact or damage to the shock body.

Swift designed the adapter with this consideration in mind, giving racers a light-weight solution that works with the existing coilover system while helping protect the shock body.

Extremely Light-weight Design

When it comes to racing, every component matters.

The Swift Stacked Spring Adapter is designed to provide the necessary functionality without adding unnecessary weight to the suspension assembly.

Its light-weight construction makes it an ideal addition for racers who want the tuning benefits of a stacked spring setup without adding a bulky component to the package.

It's another example of how Swift focuses on solving a specific suspension problem while keeping the overall system efficient.

Pair It With Swift Stainless Steel Washer Sheets

The Stacked Spring Adapter Kit utilizes the same stainless steel washer sheet design found in Swift's suspension tuning accessories.

These components work together to create a smoother interface between the spring and the coilover assembly.

The washer sheets help provide a consistent contact surface while the adapter establishes the proper interface between the flat wire and round wire springs.

Together, the components help:

>Reduce unwanted spring noise
>Allow the spring to rotate more freely
>Promote more even load distribution
>Reduce friction during compression
>Allow the spring to unwind naturally
>Provide a stable interface between flat and round wire springs

This attention to the contact points within the suspension can help make a stacked spring package more predictable and repeatable.

What's Included in Each Kit?

Swift Stacked Spring Adapter Kits are sold one kit per spring.

Each kit includes:

1x Stacked Spring Adapter

2x Stainless Steel Washer Sheets

The kits are available in three common coilover sizes:

Selecting the correct adapter size for your coilover system is essential for proper fit and operation.

A Smarter Solution for Stacked Spring Tuning

A stacked spring combination can provide racers with another way to shape the suspension's response, but the components connecting those springs shouldn't be an afterthought.

Swift's Stacked Spring Adapter Kits are designed to make the flat wire-to-round wire transition more effective by providing a light-weight, low-friction interface that allows the springs to move naturally.

From reducing spring noise to protecting shock body threads and allowing the spring to unwind during compression, the adapter addresses several of the small details that can have an impact on the overall performance of a coilover system.

The Science of Winning: Suspension Tuning Accessories Series

Swift Springs continues to develop its Suspension Tuning Accessories lineup with products designed to help racers get more consistency from their suspension systems.

The Stacked Spring Adapter Kit is another example of Swift's approach: identify a problem racers encounter, listen to what teams need, and develop a purpose-built solution.

Because when you're tuning a race car, the details matter.

Swift Stacked Spring Adapter Kits are available in 60mm, 65mm, and 70mm applications. Contact your local Swift Springs dealer or visit Swift Springs to learn more about the complete Suspension Tuning Accessories lineup.