Eibach ERS Performance Spring (HELPER300T)

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: HELPER300T

Key details:

• Single Spring
• Keeps Main Spring Seated When Suspension is Unloaded
• Available for Most Popular Spring Diameters
• Each Spring Individually Tested
• Flat Spring Wire for Maximum Travel and Minimum Block Height

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