Spring Rear 13in x 5in x 100# Platinum

The EIBACH Spring Rear 13in x 5in x 100# Platinum (MPN: PR1300.500.0100) is a high-performance coil spring engineered for rear suspension tuning on vehicles requiring precise spring rates and consistent load support. This platinum-series spring delivers a 100 lb/in spring rate in a 13-inch length with 5-inch outer diameter, designed to work in applications where controlled compression and predictable ride characteristics are critical for handling refinement.

The 100 lb/in rate establishes this as a moderate-stiffness spring suitable for daily-use vehicles and light performance applications. The 13-inch length and 5-inch OD footprint fit standard rear suspension geometries common to American and import platforms. Constructed from high-carbon steel with a platinum powder-coat finish, the spring resists corrosion and maintains structural integrity across seasonal temperature variations and extended storage. The powder-coat protects against moisture intrusion while allowing for visual inspection of the spring body.

Buyers upgrading suspension geometry, adjusting ride height, or replacing worn OEM springs will find this spring delivers the engineering precision EIBACH is known for in the aftermarket suspension market. The spring rate of 100 lb/in balances comfort with responsiveness on street-driven vehicles, avoiding the harshness of stiffer rates while maintaining better load handling than factory springs. This single unit weighs 3.4 lbs and integrates with existing suspension mounting points on compatible platforms.

EIBACH springs are engineered to OEM specifications and performance standards, making them a direct alternative for suspension replacement or tuning. The platinum series designation indicates this spring meets EIBACH's corrosion-resistance and longevity benchmarks for long-term durability in variable climates.