King Shocks SPR25-12-350 2.5" ID x 12" Free Length Coil Spring - 350 lb/in Rate

Product Overview

• Part Number: SPR25-12-350
• Brand: King Shocks
• Product Type: Coil-Over Shock Spring
• Inside Diameter: 2.5"
• Free Length: 12"
• Spring Rate: 350 lb/inch
• Application: Coil-over suspension systems
• Condition: New

Features

• Premium quality coil spring manufactured in the USA
• Designed for high-performance off-road and custom suspension use
• 2.5" inside diameter for compatibility with 2.5" coil-over shocks
• 12" free length ideal for higher lift or extended travel setups
• 350 lb/inch spring rate for firmer support and load-carrying capacity
• Closed-and-ground ends provide a true seating surface
• High-tensile chrome silicon wire construction for strength and durability
• Suitable for tuning ride height and supporting heavy loads

Specifications

• Spring Rate: 350 lb/inch
• Inside Diameter: 2.5"
• Free Length: 12"
• Material: High-tensile chrome silicon steel
• Ends: Closed and ground
• Fitment: Universal - fits 2.5" coil-over shocks

Included Components

• 1x King Shocks SPR25-12-350 coil spring

Product Description

The **King Shocks SPR25-12-350** coil spring is a high-performance suspension spring engineered for use with **2.5" diameter coil-over shock systems** on off-road trucks, race rigs, and custom suspension builds. Featuring a robust **350 lb/inch spring rate** and a **12" free length**, this spring delivers strong support for heavier loads, increased ride height, and extended travel applications where firmer suspension performance is desired.

Constructed from high-tensile chrome silicon wire with precision winding and closed-and-ground ends, this coil spring provides reliable load-bearing capacity and consistent spring action over time. The **2.5" inside diameter** ensures broad compatibility with many aftermarket coil-over shocks, including King, Fox, and other performance brands. Whether you are tuning suspension for off-road performance or customizing ride height and stiffness, the SPR25-12-350 offers dependable operation and durability. Proper pairing with your shock travel and vehicle weight is recommended for ideal suspension behavior.