QA1 Pro Coilover Springs

4.93 out of 5 stars 45 Customer Reviews

QA1 Pro coilover springs fit perfectly with QA1's front Pro Coil Shock Systems. These springs are available with flat or pigtail ends and in 10 or 11 in. free lengt

QA1 Pro coilover springs fit perfectly with QA1's front Pro Coil Shock Systems. These springs are available with flat or pigtail ends and in 10 or 11 in. free lengths. Made with the highest quality materials, QA1 springs are strong, consistent, and have a long life. Order the style, size, and spring rate options needed for your application.

Additional details:

* Chrome Silicon steel (CrS) construction for high strength, consistency, and long life
* Cold wound, heat-treated, and shot peened to ensure consistency, accuracy, and durability
* Silver powdercoated for excellent longevity
* High Travel (HT) options have fewer coils and a smaller wire diameter; as a result, they're lighter and have increased travel due to the larger distance between the coils. They reduce unsprung weight and react faster, optimizing suspension performance
* Springs are clearly marked with the free length of the spring and spring rate for quick and easy identification
* All QA1 springs are lifetime guaranteed to remain within 2 percent of the original free height and rate under normal operating conditions
* For Mustang struts or rear Pro Coils, see QA1's 2.5 in. I.D. springs

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QA1 Pro 10 Inch Coilover Spring 10HTBF550

Coilover Spring, Pro, Flat Style, 550 lbs./in. Rate, 10 in. Length, 4.10/2.50 in. I.D., Silver Powdercoated, Each

Part Number: QA1-10HTBF550

5.0 out of 5 stars ( 3 )