OVERVIEW
Swift Springs' Spec-R line uses the company's signature small-ID, high-travel spring design for a more linear rate through the shock's travel than a typical high-ID lowering spring. For the G80 M3, the Spec-R kit lowers ride height for street and track use while working with the factory S58's damper valving.
SPECS
- Front spring rate: 5.6 kgf/mm
- Rear spring rate: 13.5 kgf/mm
- Front drop: approx. 1.3 in
- Rear drop: approx. 1.0 in
- Swift small-ID, high-travel spring construction
PARTS INCLUDED
- Front and rear Spec-R lowering springs (set of 4), as supplied by Swift Springs
TECH RESOURCES
Required Parts
- None. Swift Springs specifies no additional hardware beyond the factory strut/shock assembly for installation.
Notes
- Swift Springs does not publish an installation PDF or a vehicle-specific install video for this kit; installation follows standard spring-compressor procedure onto the factory struts/shocks.
- Swift's own product page confirms fitment for the M3 and M3 Competition (G80) only; it does not state compatibility with the M4 (G82/G83), so this listing is scoped to the M3 sedan. Confirm with Swift Springs before assuming M4 fitment.
PART NUMBER
- 4X930R
VEHICLE APPLICATIONS
| Make | Model | Chassis | Engine | Years |
|---|---|---|---|---|
| BMW | M3 | G80 | S58 3.0L Twin-Turbo I6 | 2020+ |