Eibach's Sportline kit drops the S550 Mustang GT about 1.5" front and 1.3" rear, lowering the center of gravity for flatter cornering and a more aggressive stance. Progressive spring rates keep the 5.0L GT composed on the street while adding grip on the track. Sold as a set of four springs for the factory dampers (non-MagneRide).
| Type | Sportline performance lowering springs (set of 4) |
| Spring Design | Progressive-rate coil |
| Lowering | Front 1.5" / Rear 1.3" |
| Material | High-strength alloy spring steel |
| Warranty | Eibach 5-Year (defects in material and workmanship) |
| Part Number | 4.14535 |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2015-2023 | Ford | Mustang | GT |
| 2018-2019 | Ford | Mustang | GT Premium |
Shipping: In-stock orders placed before 3 PM EST ship the same day, and everything else ships within 24 hours. Standard, expedited, and overnight options are available at checkout. Backordered items ship as soon as we get them back in stock. Contact us for lead times. See the full Shipping Policy.
Returns: 30-day returns on new, unused items in original packaging. See the full Refund Policy.
