Hyperco 18Y0350-9.9 Front Coil Spring ID Tall lb/in - 5 9.9 350

The Hyperco 18Y0350-9.9 is a high-performance front coil spring engineered for racing and high-performance suspension applications. This precision-wound spring features a 5-inch inside diameter and 9.9-inch free height, designed to deliver consistent performance under demanding conditions.

Key Specifications:

• Spring rate: 350 pounds per inch
• Inside diameter: 5 inches
• Free height: 9.9 inches
• Chrome silicon construction for superior durability and fatigue resistance
• Precision wound to tight tolerances for consistent rate
• Heat-treated for maximum strength and longevity

Hyperco springs are manufactured to exacting standards and are widely used in professional racing applications including NASCAR, IndyCar, and road racing. The chrome silicon material provides excellent resistance to sagging and maintains consistent spring rates over time, even under extreme temperatures and repeated compression cycles.