King SPR3-10-300 3.0 Inch ID Coilover Spring 10 Inch Length 300 lb Rate

The King SPR3-10-300 is a high-performance coilover spring engineered specifically for off-road applications. This single-rate coil spring features a 3.0 inch internal diameter, 10 inch length, and 300 lb per inch spring rate, making it ideal for custom coilover suspension systems on trucks, buggies, and other off-road vehicles.

Key Specifications:

• Internal Diameter: 3.0 inches
• Spring Length: 10 inches
• Spring Rate: 300 lbs per inch (linear rate)
• Material: High tensile chrome silicon wire
• Closed and ground ends for flat seating and true deflection
• Powder coated finish for corrosion resistance

Manufactured in the USA:

• Made from premium quality, high tensile chrome silicon wire
• Specifically wound for off-road applications, not repackaged automotive springs
• Spring rates, wire diameters, and coil lengths developed through extensive real-world testing
• Proven in competition from Baja to Dakar racing

Understanding the spring rate: A 300 lb spring rate means it requires 300 pounds of force to compress the spring one inch. At 2 inches of compression, the force required is 600 lbs; at 3 inches, 900 lbs. This linear rate spring provides consistent, predictable performance for your suspension setup. King Shocks maintains an inventory of over 10,000 springs ready to ship, ensuring availability for your suspension needs.