King Shocks 3.0-Inch ID Coil Spring, 16-Inch Length, 300 lb. Rate – SPR3-16-300

King coil springs are manufactured to our specifications in the USA using the finest quality, high tensile, chrome silicon wire available. Our springs are specifically wound for off-road applications, not repackaged car springs. Our spring rates, wire diameters, and coil lengths have been developed through extensive real world testing on all types of terrain. Our race winning designs have been put to the test in the heat of battle from Baja to Dakar. All springs have closed and ground ends to sit flat and deflect true. We have the largest selection of springs to match your application. We sell thousands of springs a month with barely a return ever, yet we offer a lifetime warranty to the original purchaser against sagging and breakage. You will have the added peace of mind knowing you're covered, just in case. In the rare occurrence that a spring does fail, it will be cheerfully replaced with no questions asked. Our customer support is second to none just like the quality and performance of our products. Nothing rides like a King. Coil Spring; 3.0 in.; 16 in. Length/300 lbs. Spring Rate;

• Coils Are Made From The Finest Quality; High Tensile; Chrome Silicon Wire Available
• King Coil Springs Are Manufactured To Our Specifications Right Here In The USA
• Coils Are Closed And Ground To Sit Flat And Deflect True
• Over 10;000 Springs In Stock And Ready To Ship
• Specifically Wound For Off-Road Applications

The King Shocks SPR3-16-300 coil spring is engineered specifically for off-road suspension applications. Manufactured in the USA from high-tensile chrome silicon wire, this spring is designed to deliver consistent support, dependable durability, and predictable performance across demanding terrain. Its 3.0-inch inside diameter, 16-inch free length, and 300-pound spring rate make it a practical choice for suspension setups requiring controlled ride height and reliable load management.

Unlike repurposed automotive springs, King Shocks coil springs are developed specifically for off-road use through extensive real-world testing. The spring is wound to King’s performance specifications and features closed, ground ends that sit flat in the spring seats and help the spring deflect consistently. This design supports accurate suspension operation and helps maintain reliable performance during high-load and high-articulation driving.

King Shocks backs the SPR3-16-300 with a lifetime warranty to the original purchaser against sagging and breakage, providing added confidence for serious off-road use. The spring is sold individually and is suitable for applications that require a 300-pound rate. Verify suspension requirements, available travel, and vehicle fitment before installation. Vehicle-specific fitment information was not provided for this product.

Product Specifications and Technical Data

• Brand: King Shocks
• Part Number: SPR3-16-300
• Product Type: Off-road coil spring
• Inside Diameter: 3.0 inches
• Free Length: 16 inches
• Spring Rate: 300 pounds per inch
• Material: High-tensile chrome silicon wire
• End Configuration: Closed and ground ends

What’s Included

One King Shocks SPR3-16-300 coil spring. Installation hardware and additional components are not included unless specified by the application.

Features:

• High-Tensile Chrome Silicon Wire: Manufactured from premium high-tensile chrome silicon wire for dependable strength and long-term durability.
• Off-Road-Specific Design: Specifically wound for off-road applications rather than adapted from passenger-car spring designs.
• Consistent Suspension Performance: A 300-pound spring rate provides predictable support for suspension systems configured for this load requirement.
• Closed and Ground Ends: Precision-finished ends sit flat in the spring seats and help the spring deflect true during suspension movement.
• USA Manufacturing: Manufactured in the USA to King Shocks specifications using extensive real-world off-road testing.
• Lifetime Warranty: Covered against sagging and breakage for the original purchaser under King Shocks warranty terms.

Air Freight Prohibited: false
Not Carb Approved: false
Ltl Freight Required: false
Prop 65: Unknown
Part Type: automotive
Epa: N/A
Carb Acknowledgement Required: false
Regular Stock: t
Units Per Sku: 1