Hyperco 18S-225 Conventional Coil Spring OD Length lb/in - 5 13 225

The Hyperco 18S-225 is a high-performance conventional suspension spring engineered for motorsports applications. This S-Series racing spring features a 5-inch outer diameter, 13-inch free length, and a spring rate of 225 pounds per inch, providing 9.15 inches of available travel for optimal suspension performance.

Key Features:

• 225 lb/in spring rate designed for racing suspension systems
• 5-inch outer diameter conventional design
• 13-inch free length with 9.15 inches of deflection travel
• Closed and ground ends for consistent performance
• Blue powder-coated finish for corrosion resistance and visual appeal
• Manufactured from high-quality steel to racing specifications
• NASCAR-style closed-end spring technology for improved rate linearity
• Reduced physical weight while maintaining exceptional strength

Hyperco conventional springs bring closed-end racing technology to high-travel suspension applications. The closed-end design increases the number of active coils during compression, creating progressive rate characteristics through initial deflection stages. This results in less spring deflection at static load, leaving more dynamic travel available for aggressive on-track performance. Each spring is guaranteed to maintain its rate and free length specifications for the life of the spring when used in normal racing conditions.