King SPR375-16-400 Off-Road Coil Spring ID Length Rate - 3.75 16 400lb

The King SPR375-16-400 is a high-performance coil spring engineered specifically for off-road and racing applications. This premium spring features a 3.75-inch inside diameter, 16-inch free length, and a 400 lb/inch spring rate, making it compatible with 3.0-inch outside diameter coilover shocks from King and other leading manufacturers.

Key Features:

• Manufactured in the USA from high-tensile chrome silicon wire for maximum durability and consistent spring rates
• Closed and ground ends ensure the spring sits flat and deflects true under compression
• Spring rate permanently etched on top for easy identification even after hard use
• Specifically wound for off-road applications with wire diameters and lengths developed through extensive real-world testing
• Race-proven design tested in extreme conditions from Baja to Dakar
• Backed by lifetime warranty against sagging and breakage to original purchaser

Unlike repackaged automotive springs, King coil springs are purpose-built for the demanding conditions of off-road racing and recreational use. The 400 lb/inch spring rate means it requires 400 pounds of force to compress the spring one inch, providing predictable, linear compression characteristics. Whether you're building a custom suspension setup or replacing worn springs, King's extensive inventory and proven performance make them the choice of professional racers and serious enthusiasts alike.