Eibach ER Platinum Rear Race Spring PR1800.500.0125, 18-Inch Length, 5.0-Inch Outside Diameter, 125 lb/in Rate

Renowned for our extensive catalog of over 1,500 precision engineered race springs. Eibach race springs offer unparalled customization and performance optimization across a wide spectrum of racing applications. From shocks to pull-bars we offer a wide range of springs solutions to fine tune the handling dynamics of your race car. Individual Motorsport Spring

• The Eibach ER Platinum Springs will Maintain Their Dimensions and Rates to Incredibly Tight Tolerances, Lap after Lap, Race after Race
• Flat-Ground End Configuration with Parallel Tolerance to +/-1 Degree
• More Travel / Deflection than Standard Racing Coil Springs
• Ultra Light-Weight Using High Tensile Steel
• Block Resistant - No Loss in Spring Height!

The Eibach ER Platinum Rear Race Spring is an individual motorsport spring engineered for precise suspension tuning and consistent performance in demanding racing applications. Part number PR1800.500.0125 features an 18-inch spring length, 5.0-inch outside diameter, and a 125 lb/in spring rate, making it a dependable choice for racers who require predictable handling characteristics and repeatable suspension response.

Built from high-tensile steel, this Eibach race spring combines low weight with exceptional durability. Its flat-ground end configuration is manufactured to a parallel tolerance of plus or minus 1 degree, supporting accurate installation and consistent load distribution. The spring is also designed to provide greater travel and deflection than standard racing coil springs, helping optimize suspension movement across changing track conditions.

ER Platinum Springs are engineered to maintain their dimensions and spring rates within exceptionally tight tolerances over repeated racing use. Their block-resistant construction helps prevent loss of spring height, supporting consistent ride height and suspension setup from lap to lap and race to race. This spring is intended for motorsport applications and should be selected according to the vehicle's suspension design, intended use, and required spring rate.

Key Product Specifications & Technical Data

• Brand: Eibach
• Part Number: PR1800.500.0125
• Product Type: Individual motorsport race spring
• Spring Position: Rear
• Spring Length: 18 inches
• Outside Diameter: 5.0 inches
• Spring Rate: 125 lb/in
• Material: High-tensile steel

What's Included

One Eibach ER Platinum rear race spring.

Fitment data should be verified against the vehicle, suspension configuration, spring seat, and racing setup before installation. Professional installation and suspension tuning are recommended.

Features:

• Consistent Racing Performance: Maintains spring dimensions and rates within tight tolerances for repeatable suspension behavior during extended racing use.
• Flat-Ground End Configuration: Parallel end configuration manufactured to a tolerance of plus or minus 1 degree for accurate seating and load distribution.
• Increased Travel and Deflection: Provides more suspension travel and deflection than standard racing coil springs for improved setup flexibility.
• Lightweight, Block-Resistant Construction: Uses high-tensile steel to reduce weight while resisting spring height loss under repeated compression.

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