QA1 12-525 High Travel Coil Spring 525 lb/in 12in. 2-1/2in. ID Chrome Silicon

The QA1 12-525 is a high travel coil spring featuring a 525 lb/in spring rate, a 12-inch free length, and a 2-1/2" inside diameter, designed for use with coil-over shock absorbers in performance suspension applications.

Key Features:

• Chrome Silicon Steel (CrSi): Manufactured from high-quality chrome silicon alloy spring wire for exceptional strength, consistency, and long service life
• Cold Wound, Heat Treated & Shot Peened: Each spring undergoes intensive manufacturing processes to ensure accuracy, durability, and fatigue resistance
• Squared & Ground Ends: Both ends are ground flat to guarantee straight, consistent, and accurate operation in coil-over applications
• Fewer Coils, Smaller Wire Diameter: High-travel design maximizes suspension travel with a larger coil gap, reducing unsprung weight for faster suspension response
• Length & Rate Marked: Free length and spring rate are clearly stamped on each spring for quick and easy identification
• Protective Finish: Available in silver powder coat for excellent longevity or polished chrome plate for a show-quality appearance
• Made in the USA

Lifetime Guarantee: All QA1 springs are backed by a lifetime guarantee to remain within 2% of the original free height and spring rate under normal operating conditions, providing long-term confidence in your suspension build.