King SPR425-26-550 Coil Spring 4.25" ID 26" Length 550 lb Rate

The King SPR425-26-550 is a high-performance coil spring engineered specifically for demanding off-road and racing applications. This premium coil spring features a 4.25-inch inside diameter, 26-inch free length, and 550 lb/inch spring rate, designed to fit 3.5-inch outside diameter coil-over shocks.

Key Features:

• Inside Diameter: 4.25 inches
• Free Length: 26 inches
• Spring Rate: 550 lbs per inch
• Fits 3.5-inch outside diameter coil-over shocks
• Manufactured in the USA from high tensile chrome silicon wire
• Closed and ground ends for flat seating and true deflection
• Spring rate etched on top for easy identification
• Universal fitment - compatible with King and other shock brands

King coil springs are purpose-built for off-road use, not repackaged automotive springs. Each spring is manufactured to exact specifications using the finest quality materials, with spring rates, wire diameters, and coil lengths developed through extensive real-world testing on all types of terrain. King's race-proven designs have been tested from Baja to Dakar, delivering consistent performance and exceptional durability. Backed by King's lifetime warranty against sagging and breakage to the original purchaser.