Swift Springs Introduces New 100-250-575 V Progressive Right Rear Spring for Dirt Late Models

Swift Springs is expanding its Dirt Late Model suspension lineup with the release of the new 100-250-575 V Progressive Right Rear Spring. Developed to improve consistency and simplify chassis setup, this innovative spring has already proven itself in competition, earning multiple feature race victories before becoming available to the public.

Designed specifically for the demanding conditions of Dirt Late Model racing, the new progressive spring helps teams achieve the rear suspension loads they need without relying on traditional spring rubbers.

Eliminate the Need for Spring Rubbers

One of the biggest advantages of the new 100-250-575 V spring is its ability to produce the desired load progression through the spring itself. Instead of using spring rubbers to increase load and alter suspension characteristics, racers can achieve consistent performance with a single spring designed to handle the job.

Removing spring rubbers also helps eliminate one of the variables that can affect chassis balance throughout changing track conditions, giving teams a more repeatable and predictable setup from hot laps to the checkered flag.

Progressive Load Characteristics

The 100-250-575 V was engineered to provide increasing support as the suspension compresses, allowing the chassis to remain compliant while delivering the additional load needed deeper into suspension travel.

Load Progression – 450 lb Static Load

Load Progression – 400 lb Static Load

These progressive characteristics allow racers to maintain compliance during initial suspension movement while generating increased support as the suspension compresses under acceleration and cornering loads.

Proven Performance on the Track

Before its official release, the 100-250-575 V was tested extensively by Dirt Late Model teams, quickly building an impressive resume with multiple feature wins. That real-world success helped validate the spring's design and demonstrated its ability to improve consistency under competitive racing conditions.

By reducing setup complexity and providing predictable load progression, the spring gives crews another valuable tool for dialing in rear suspension performance.

Available Now

The new 100-250-575 V Progressive Right Rear Spring is now in stock and available through authorized Swift Springs dealers as well as directly from Swift Springs.

Whether you're looking to simplify your rear suspension package, improve consistency throughout a race, or eliminate the need for spring rubbers, the latest addition to the Swift Springs lineup offers a proven solution backed by race-winning performance.