Hyperco 18SNU-200 Conventional Rear Coil Spring 16 Inch 5 Inch OD 200 lb Rate

The Hyperco 18SNU-200 is a high-performance conventional rear coil spring designed for motorsports and circle track racing applications. This precision-engineered suspension spring features a 5-inch outer diameter, 16-inch free length, and a 200 lb/in spring rate, making it ideal for racers seeking optimal performance within sanctioning body specifications.

Dynamic Travel Response Technology:

Hyperco's proprietary Dynamic Travel Response (DTR) design allows this spring to exceed performance requirements for travel and rate linearity while maintaining significantly less physical weight than traditional designs. This breakthrough technology delivers consistent performance on both dirt and pavement tracks, giving racers a competitive edge at every level.

Key Features:

• 16-inch free length with 5-inch outer diameter
• 200 lb/in linear spring rate for predictable handling
• High-tensile strength chrome silicone steel construction
• Blue powder coat finish for corrosion resistance and visual appeal
• Both ends closed and ground flat for proper seating
• Designed to fit standard suspension hardware
• Maintains free length and installed height throughout its service life
• Lifetime warranty to original purchaser with 2% tolerance guarantee on rate and free length

Quality Assurance:

Each Hypercoil undergoes two separate magnaflux inspections—once before manufacture and again after coiling—to ensure the wire is free from surface imperfections that could lead to spring failure. The springs are manufactured using state-of-the-art equipment and mill-run raw materials, allowing engineers to be design-specific for each application rather than being constrained to standard wire sizes.

Hyperco springs are designed for maximum deflection while remaining lightweight enough to endure the extreme conditions common to motor racing. The precision manufacturing process ensures these springs retain their rate and free length for multiple racing seasons when properly cared for and used under normal racing conditions.