Product Details
The Swift Spec-R Lowering Springs for the 2005-2007 Mitsubishi Lancer Evolution 8/9 MR (CT9A) optimize the Evo's already-legendary suspension geometry with a lower center of gravity and increased spring rates tuned for competitive use. These Evo 8/9 MR lowering springs deliver an approximate 1.4" front and 0.8" rear drop with spring rates of 6.4 Kg/mm front and 6.8 Kg/mm rear, designed to maximize the CT9A's Bilstein damper performance on track. Made in Japan from Swift's proprietary H5S.TW spring steel, these Lancer Evolution springs reduce unsprung weight and eliminate coil bind, providing the kind of precise suspension feedback that Evo owners demand for time attack, rally-cross, and SCCA 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 | 4M017R |
| Part Name | Swift Spec-R Lowering Springs |
| Vehicle | 2005-2007 Mitsubishi Lancer Evolution 8/9 MR |
| Chassis Code | CT9A |
| Spring Rate - Front | 6.4 Kg/mm |
| Spring Rate - Rear | 6.8 Kg/mm |
| Approximate Drop - Front | 1.4" |
| Approximate Drop - Rear | 0.8" |
Vehicle Fitment
- 2005 Mitsubishi Lancer Evo 8/9 MR (CT9A)
- 2006 Mitsubishi Lancer Evo 8/9 MR (CT9A)
- 2007 Mitsubishi Lancer Evo 8/9 MR (CT9A)




