The Eibach Pro-Kit is a progressive-rate lowering spring set for the S550/S650 Ford Mustang GT. It drops the front about 1.1" and the rear about 1.0" (1.3" all-around on 2024+ cars), closing the fender gap and cutting body roll and nose-dive while keeping a streetable ride on the factory dampers. Fits Mustang GT and GT Premium without MagneRide.
Specifications
| Type | Performance lowering springs (Eibach Pro-Kit) |
| Spring Design | Progressive rate |
| Lowering | Front 1.1" / Rear 1.0" (2024+: 1.3" front and rear) |
| Material | High-tensile shot-peened steel |
| Included | Set of 4 springs (front and rear) |
| Warranty | Eibach limited lifetime (million-mile) |
| Part Number | 35145.140 |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2015-2026 | Ford | Mustang | GT |
| 2018-2019 | Ford | Mustang | GT Premium |
Shipping
- In-stock orders placed before 3 PM EST ship the same day — everything else ships within 24 hours.
- Standard, expedited, and overnight options at checkout.
- Oversized items ship by freight and take longer.
- Backordered items ship as soon as stock lands — contact us for lead times.
- International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.
Returns
- 30-day returns on new, uninstalled items in original packaging with all hardware.
- Standard returns: 8% restocking fee, buyer pays return shipping. Both waived if the item is defective or we made the error.
- Installed or used parts can’t be returned — confirm fitment before you install.
- Special orders and custom items are final sale.
- Email us for return authorization before shipping anything back.
Full details: Shipping Policy · Refund Policy
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