Swift Springs Expands Round Wire Bump Spring Line with Three New High-Rate Options

As suspension technology continues to evolve, racers need bump spring options that offer greater tuning precision without sacrificing consistency. Continuing its commitment to developing products based on racer feedback, Swift Springs expanded its Round Wire Bump Spring lineup with the addition of three new high-rate springs for asphalt racing applications.

The new 3500, 4500, and 8000 lb/in Round Wire Bump Springs were developed to complement the existing lineup, giving racers more choices when dialing in today's increasingly sophisticated suspension packages. While originally introduced as an expansion of the product line, these spring rates remain highly relevant for modern chassis tuning and continue to provide valuable setup options for today's racers.

New High-Rate Round Wire Bump Spring Options

The newest additions to the Swift Springs Round Wire Bump Spring family include:

• SBS3500 – 3500 lb/in
• SBS4500 – 4500 lb/in
• SBS8000 – 8000 lb/in

These rates expand an already comprehensive lineup, allowing teams to better fine-tune suspension behavior for a variety of asphalt racing conditions and chassis combinations.

Whether you're refining shock travel, improving platform control, or adapting to changing track conditions, having additional spring rates available provides greater flexibility throughout the setup process.

Built for Modern Asphalt Racing Setups

Today's asphalt racing platforms continue to place greater emphasis on suspension tuning than ever before. Bump springs play an important role in controlling chassis attitude, maintaining tire contact, and delivering predictable handling throughout a race.

The Swift Springs Round Wire Bump Spring lineup was developed specifically for these demands, offering:

• True linear spring characteristics
• High travel capability
• Consistent spring performance
• Multiple rate options for precise chassis tuning
• Compatibility with the same Swift Springs bump spring retainer across the entire Round Wire lineup

The compact 2.25-inch length also makes these springs an excellent solution for modern suspension packages where packaging space and consistency are equally important.

Engineered with Proprietary HS5.TW Material

Every Swift Springs Round Wire Bump Spring is manufactured using the company's proprietary HS5.TW spring steel, produced entirely in-house.

Because Swift Springs controls both the metallurgy and manufacturing process, every spring is built to deliver exceptional consistency from one part to the next. That consistency helps racers make setup changes with confidence, knowing each spring performs as intended.

It's one of the defining differences behind the Swift Springs product lineup and a major reason racers continue to rely on Swift products season after season.

Designed for Compliance and Consistency

These additional Round Wire Bump Spring rates were developed with today's asphalt racing applications in mind and are suitable for chassis packages that require compliance with applicable series rules and technical specifications.

Rather than forcing racers to compromise between available spring rates, the expanded lineup provides additional tuning options while maintaining the same high-quality construction and consistent performance expected from every Swift Springs product.

Continuing to Deliver What Racers Need

One theme has remained consistent throughout the evolution of the Swift Springs lineup—listening to racers.

The addition of the 3500, 4500, and 8000 lb/in Round Wire Bump Springs was driven by feedback from racers across the country who wanted more tuning options for increasingly advanced asphalt racing setups.

Today, those additional rates continue to give teams more flexibility when fine-tuning suspension performance, proving that thoughtful product development remains valuable long after a product's initial release.

The new rates are available through authorized Swift Springs dealers, with drop shipping available when needed to help racers get the parts they need without unnecessary delays.

Explore More Swift Springs Bump Spring Resources

This article is part of our expanding Swift Springs Bump Springs resource series, where we cover new product releases, technical insights, and suspension tuning information for racers looking to get the most from their chassis.

Whether you're comparing bump spring lengths, selecting the right spring rate, or learning how different Round Wire and Linear Bump Springs influence suspension performance, our resource library is built to help racers make more informed setup decisions.

Swift Springs — The Science of Winning. From proprietary metallurgy to precision manufacturing, every spring is engineered to deliver the consistency, durability, and performance today's racers demand.