QA1 12HT350B 12in 2.5in ID 350 lb/in High Travel Coil Spring Universal

Vehicle Fitment

• Universal fitment for coil-over suspension systems designed for 2.5" inner diameter springs with 12" free length

Features

• 12-inch free length allows greater suspension travel in custom coil-over setups
• 350 lb/in spring rate provides a firm yet balanced support for performance builds
• Constructed from chrome-silicon alloy steel for high tensile strength and fatigue resistance
• High-travel design with fewer coils and optimized spacing to reduce unsprung weight and delay coil-bind
• Black powder-coated finish adds corrosion resistance and durable appearance
• Ground ends ensure precise seating and consistent compression under load
• Sold individually for custom side-specific setup or matching applications
• Made in the USA with a lifetime warranty on rate and free length under normal conditions

Specifications

• Free length: 12.0 in
• Inner diameter (I.D.): 2.5 in
• Spring rate: 350 lb/in
• Finish: Black powder coat
• Material: Chrome-silicon alloy steel
• Fitment type: Universal (front or rear coil-over application)

Included Components

• 1x QA1 12HT350B High Travel Coil Spring

Product Description

The QA1 12HT350B High Travel Coil Spring is engineered for performance and precision in custom suspension systems. With a 12-inch free length and a 350 lb/in rate, it's ideal for builders who want increased travel without sacrificing support or handling responsiveness. The reduced coil count and Chrome-Silicon alloy construction deliver both durability and improved ride dynamics.

Finished in a corrosion-resistant black powder coat, the 12HT350B is sold individually, offering flexibility for side-specific tuning or custom pairings in dual-spring setups. Although it's a universal component rather than a direct vehicle-specific fit, ensure your coil-over assembly supports a 2.5" I.D. spring of 12" length and approximately 350 lb/in rate for optimal performance.