Product Details
The Swift Spec-R Lowering Springs for the 2014-2018 BMW M3 (F80) eliminate the excessive wheel gap on the F80 while optimizing suspension geometry for serious track use. These F80 M3 lowering springs provide an approximate 1.0" front and 0.4" rear drop with spring rates of 4.8 Kg/mm front and 12.8 Kg/mm rear, calibrated for the F80's adaptive M suspension. Manufactured in Japan from Swift's proprietary H5S.TW spring steel, these M3 springs deliver reduced unsprung weight, faster transient response, and the confidence-inspiring body control that F80 owners need for HPDE and time attack competition.
Swift Spec-R Technology
- Proprietary H5S.TW high-tensile spring steel, manufactured in Japan
- Optimized ride height to maximize suspension geometry at lowered position
- Increased spring rates tuned to usable shock stroke for balanced performance
- Fewer coils reduce unsprung mass and completely eliminate coil bind
- Quicker transient response for improved traction and road feedback
- Vehicle-specific bump rubber engineering to prevent bottoming out
Features
- Track-proven in HPDE and SCCA competition
- Lowered center of gravity for improved cornering grip
- Reduced body roll and sharper handling response
- Comfortable enough for daily driving
- Compatible with OEM and aftermarket shocks/struts
- Direct bolt-on installation with no modifications required
Specifications
| Part Number | 4X909R |
| Part Name | Swift Spec-R Lowering Springs |
| Vehicle | 2014-2018 BMW M3 |
| Chassis Code | F80 |
| Spring Rate - Front | 4.8 Kg/mm |
| Spring Rate - Rear | 12.8 Kg/mm |
| Approximate Drop - Front | 1.0" |
| Approximate Drop - Rear | 0.4" |
Vehicle Fitment
- 2014 BMW M3 (F80)
- 2015 BMW M3 (F80)
- 2016 BMW M3 (F80)
- 2017 BMW M3 (F80)
- 2018 BMW M3 (F80)









