QA1 10CS450 Chrome Silicon Coil Spring 2-1/2" ID 10" Length 450 lb/in

The QA1 10CS450 is a chrome-plated coilover coil spring engineered for performance street and racing suspension applications. Featuring a 2-1/2" inner diameter, 10" free length, and a 450 lb/in spring rate, this spring is designed to deliver consistent, predictable handling on both the track and street.

Key Features:

• Chrome Silicon Alloy Construction – Manufactured from high-tensile chrome silicon steel for exceptional strength, durability, and fatigue resistance
• Chrome Plated Finish – Polished chrome plating provides corrosion protection and a clean, classic appearance
• 2-1/2" Inner Diameter – Compatible with standard 2-1/2" I.D. coilover hardware and shock bodies
• 10" Free Length – Suits a wide range of coilover shock configurations
• 450 lb/in Spring Rate – Linear rate design delivers consistent, predictable suspension response throughout the entire stroke
• Cold Wound, Heat Treated & Shot Peened – Intensive manufacturing processes ensure accuracy, consistency, and long service life
• Squared & Ground Ends – Both ends are ground flat for straight, accurate operation and positive seating
• Length & Rate Marked – Clearly stamped with free length and spring rate for fast, easy identification
• Lifetime Guarantee – QA1 guarantees all springs will remain within 5% of original free height under normal operating conditions
• Made in the USA – Proudly manufactured at QA1's facility in the United States

The QA1 10CS450 coil spring is sold individually and is an ideal replacement or upgrade spring for coilover suspension systems requiring a 2-1/2" I.D. spring. Whether building a performance street machine or a dedicated race car, QA1's chrome silicon coil springs provide the strength and consistency demanded by serious enthusiasts.