King Shocks 3.0-Inch ID Coil Spring, 12-Inch Length, 300 lb. Rate

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.; 12 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 3.0-Inch ID Coil Spring is engineered specifically for demanding off-road suspension applications. Part number kinSPR3-12-300 features a 300-pound spring rate and a 12-inch free length, providing a dependable foundation for suspension systems that require controlled support and consistent performance across varied terrain. Unlike repurposed automotive springs, King coil springs are specifically wound for off-road use and developed through extensive real-world testing.

Manufactured in the USA from high-tensile chrome silicon wire, this King Shocks coil spring is built for strength, durability, and repeatable performance. The spring uses closed and ground ends to sit flat in the suspension and deflect properly under load. Its carefully developed spring rate, wire diameter, and coil length help deliver predictable suspension response for off-road vehicles, including applications used in competitive environments ranging from Baja to Dakar.

King Shocks supports the original purchaser with a lifetime warranty against sagging and breakage, providing added confidence for long-term use. This coil spring is sold individually and should be selected according to the vehicle's suspension design, corner weight, travel requirements, and desired ride characteristics. Confirm application compatibility and required spring rate before installation.

Product Specifications and Technical Data

• Brand: King Shocks
• Part Number: kinSPR3-12-300
• Product Type: Off-road coil spring
• Inside Diameter: 3.0 inches
• Free Length: 12 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 3.0-Inch ID coil spring

Features:

• Off-Road-Specific Design: Specifically wound for off-road suspension applications rather than adapted from passenger-car springs.
• High-Strength Construction: Manufactured in the USA from high-tensile chrome silicon wire for durable, consistent performance.
• Flat-Seating Ends: Closed and ground ends help the spring sit flat and deflect properly under suspension loads.
• 300-Pound Spring Rate: Provides controlled suspension support for applications matched to the vehicle's weight and suspension setup.

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