H&R Super Sport Springs give the 2015-2020 Ford Mustang (GT, EcoBoost, Shelby GT350) an aggressive 1.75" drop front and rear for these MagneRide-equipped cars, sharpening turn-in with a lower center of gravity. These progressive-rate springs carry all the features of H&R Sport Springs plus additional lowering while retaining street ride comfort. Made from shot-peened 54SiCr6 spring steel.
Specifications
| Type | Super Sport lowering spring set (H&R Super Sport) |
| Spring Design | Progressive rate |
| Lowering | Front 1.75" / Rear 1.75" |
| Material | 54SiCr6 spring steel, shot-peened |
| Included | Set of 4 springs (front and rear) |
| Part Number | 51693-77 |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2015-2020 | Ford | Mustang | EcoBoost |
| 2015-2020 | Ford | Mustang | EcoBoost Premium |
| 2015-2020 | Ford | Mustang | GT |
| 2015 | Ford | Mustang | GT 50 Years Limited Edition |
| 2015-2020 | Ford | Mustang | GT Premium |
| 2019 | Ford | Mustang | Shelby GT350 |
| 2019 | Ford | Mustang | Shelby GT350R |
| 2015-2017 | Ford | Mustang | V6 |
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
