QA1 R257-170S Rear Coilover Spring 170 lb/in Single

The QA1 R257-170S is a precision-engineered rear coilover replacement spring designed for performance street and competition suspension applications. Built to QA1's exacting standards, this spring delivers consistent, predictable handling characteristics and is a direct-fit component for compatible QA1 coilover shock assemblies.

Key Features:

• Spring Rate: 170 lb/in — ideal for performance street and mild competition use
• Manufactured from high-tensile chrome silicon steel for superior fatigue resistance and longevity
• Tight spring rate tolerances ensure consistent, repeatable suspension performance
• Precision ground ends for flat, even seating on coilover perches
• Designed as a direct replacement or upgrade spring for QA1 coilover shock assemblies
• Powder-coated finish resists corrosion and wear in demanding environments

QA1 coilover springs allow enthusiasts and racers to fine-tune ride height and handling balance by swapping spring rates without replacing the entire shock assembly. The R257-170S is sold as a single spring.