QA1 10HTSF550 High Travel Coil Spring 10" Length 550 lbs/in 3.5" ID Tapered Silver

The QA1 Precision Products 10HTSF550 is a high-performance coil spring engineered for demanding suspension applications. This chrome-silicon alloy spring features a 10-inch free length, 3.570-inch inner diameter, and a spring rate of 550 pounds per inch, delivering consistent performance under extreme conditions.

Key Features:

• Chrome-silicon alloy construction for superior strength and fatigue resistance
• High travel design accommodates greater suspension movement
• Tapered end design for proper coil bind seating and clearance
• Silver powder-coated finish provides corrosion protection and professional appearance
• 3.570-inch (3-1/2") inner diameter fits standard spring perches
• 550 lbs/in spring rate for precise suspension tuning
• 10-inch free length

QA1's High Travel springs are available in multiple lengths (7", 9", 10", 12", 14", and 16") to accommodate various suspension geometries and applications. The chrome-silicon material provides excellent durability and resistance to spring sag, while the powder-coated finish resists rust and oxidation. Ideal for racing, street performance, and custom suspension builds where precise spring rates and extended travel are required.