HKS Hipermax IV GT Subaru Impreza WRX STI 2008-2014
- Spring rate N/mm(kgf/mm) - Front 78 (8), Rear 59 (6)
- 30 Step Dampening adjustment
- Adjustable Lower front mounts
- Rubber Upper Mounts
- Inverted front shocks
Vehicle Fitments:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2008 | Subaru | Impreza | 2.0R |
| 2009 | Subaru | Impreza | 2.5 GT |
| 2011 | Subaru | Impreza | 2.5i Premium, XV |
| 2008 - 2011 | Subaru | Impreza | 2.5i, Outback Sport |
| 2014 | Subaru | Impreza | I Limited |
| 2013 - 2014 | Subaru | Impreza | I Sport, i |
| 2009 - 2012 | Subaru | Impreza | R |
| 2012 - 2014 | Subaru | Impreza | Sport Limited, Base, Limited, Sport Premium, Premium, Touring |
| 2011 - 2014 | Subaru | Impreza | WRX Limited, WRX STI Limited |
| 2009 - 2014 | Subaru | Impreza | WRX Premium |
| 2008 - 2014 | Subaru | Impreza | WRX STI, Sport, WRX |