The Eibach ERS 3.75" I.D. coil spring is a high-performance suspension component engineered for precise tuning and enhanced handling. Featuring a 16-inch length and a 3.75-inch inside diameter, this spring is rated at 400 lbs/inch, providing a robust and consistent spring rate ideal for custom suspension setups. Constructed from durable materials, the ERS spring is designed to withstand demanding driving conditions, making it suitable for both street and off-road applications. Its external reservoir design helps manage heat and maintain performance under heavy loads, ensuring improved stability and responsiveness during aggressive driving or off-road adventures.

Designed for universal fitment, the Eibach ERS spring can be used in a variety of vehicle configurations requiring a 3.75-inch inside diameter spring with a 16-inch length. It is suitable for enthusiasts seeking to upgrade or customize their suspension for better handling, ride quality, or load capacity. This coil spring is a direct replacement or upgrade for compatible suspension systems and can be integrated into existing setups with appropriate mounting hardware. Ideal for off-road, performance driving, or custom builds, this spring enhances suspension performance and durability for a wide range of vehicles and applications.