12" length | 5" OD Tight Helix Spring
Swift Springs Expands 12" Tight Helix Spring Line with New 175 lb/in Rate
Swift Springs continues to expand its innovative Tight Helix (TH) spring lineup with the introduction of the new 120-500-175 TH, a 12-inch x 5-inch OD Tight Helix Spring featuring a 175 lb/in spring rate. Developed in direct response to racer feedback, this new lower-rate option provides additional tuning flexibility for competitors searching for increased mechanical grip on slick racing surfaces.
The new 175 lb/in rate joins Swift's existing 200, 225, and 250 lb/in Tight Helix offerings, giving racers another valuable tool for dialing in chassis balance when track conditions become challenging.
Developed from Racer Feedback
The newest addition to the Tight Helix family was created after racers requested a lower spring rate capable of maximizing traction without sacrificing the proven performance characteristics of the existing TH lineup.
Designed primarily with Factory Stock and Hobby Stock racers in mind, the 12-inch length is ideal for applications where ride height is determined by spring length, making it an excellent fit for a wide variety of chassis configurations.
When racing on smooth, slick tracks where available grip is at a premium, the new 175 lb/in Tight Helix spring helps teams fine-tune their setups for improved consistency and drive off the corner.
Engineered for Maximum Mechanical Grip
Like every spring in the Swift Tight Helix series, the new 120-500-175 TH incorporates the same innovative design that has made the TH lineup a favorite among racers across multiple divisions.
The lower spring rate is engineered to provide several key handling advantages, including:
- Increased side bite for improved corner entry and mid-corner stability
- Enhanced forward drive when exiting the corner
- Improved chassis balance on low-grip, slick racing surfaces
- Linear spring characteristics throughout the usable stroke
- Tightens overall vehicle handling without sacrificing consistency
These characteristics make the 175 TH especially effective when track conditions become dry and slick, allowing racers to maintain traction where others struggle.
Built on the Proven Tight Helix Platform
Swift's Tight Helix springs are designed to deliver consistent, repeatable performance while maintaining the quality and precision racers have come to expect from every Swift product.
Available in multiple spring rates, the 12-inch Tight Helix lineup now includes options for a broader range of chassis setups and track conditions:
| Part Number | Spring Rate (lb/in) | Usable Stroke | Max Stroke | Max Load |
|---|---|---|---|---|
| 120-500-175 TH | 175 | 6.3" | 6.3" | 1,095 lbs |
| 120-500-200 TH | 200 | 5.7" | 5.7" | 1,150 lbs |
| 120-500-225 TH | 225 | 5.6" | 5.6" | 1,258 lbs |
| 120-500-250 TH | 250 | 5.6" | 5.6" | 1,388 lbs |
The addition of the 175 lb/in rate gives racers even greater flexibility when selecting the ideal spring package for changing track conditions and evolving chassis setups.
Available Now
The new 120-500-175 TH 12-inch Tight Helix Spring is now shipping to authorized Swift Springs dealers nationwide.
When it comes to suspension technology, accept no imitations. The Tight Helix series represents Swift Springs' commitment to innovation, precision manufacturing, and racer-driven product development. Whether you're chasing more side bite, increased forward drive, or additional traction on slick tracks, the new 175 lb/in Tight Helix spring delivers another proven solution for serious racers.
