Product Details
The Swift Spec-R Lowering Springs for the 2015-2021 Subaru WRX STI (VA) optimize the VA STI's suspension geometry for competitive driving while giving it the low, aggressive stance the platform deserves. These VA WRX STI lowering springs deliver an approximate 1.0" front and 1.0" rear drop with spring rates of 6.3 Kg/mm front and 7.4 Kg/mm rear, tuned for the STI's Bilstein dampers and DCCD all-wheel drive. Made in Japan from Swift's proprietary H5S.TW spring steel, these STI springs provide quicker weight transfer, reduced body roll, and improved traction for autocross, rally-cross, and HPDE track days.
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 | 4F914R |
| Part Name | Swift Spec-R Lowering Springs |
| Vehicle | 2015-2021 Subaru WRX STI |
| Chassis Code | VA |
| Spring Rate - Front | 6.3 Kg/mm |
| Spring Rate - Rear | 7.4 Kg/mm |
| Approximate Drop - Front | 1.0" |
| Approximate Drop - Rear | 1.0" |
Vehicle Fitment
- 2015 Subaru WRX STI (VA)
- 2016 Subaru WRX STI (VA)
- 2017 Subaru WRX STI (VA)
- 2018 Subaru WRX STI (VA)
- 2019 Subaru WRX STI (VA)
- 2020 Subaru WRX STI (VA)
- 2021 Subaru WRX STI (VA)




