Eibach ERS Performance Spring (40-60-0030)

These are for builders who care about numbers, not marketing fluff. Eibach ERS springs are rate-consistent and engineered for spec-driven tuning.

If you’re chasing vibes, look elsewhere—this is for people who tune by numbers.

Part Number: 40-60-0030

Key details:

• Single Spring
• Provides a Softer Initial Rate When Paired with a Main Spring
• Available in Linear or Progressive Rates
• Each Spring Individually Tested
• Highest Linearity and Guaranteed Consistency

iShock is a factory-authorized Eibach sales, service, and installation center—so your setup is backed by real product knowledge and suspension expertise.