SKU: 658 420 A | UPC: 4996338658289
Cusco Pillowball Rear GDA 2001-2007 Subaru Impreza (Will Not Fit OEM Big Spring Setup)
The Cusco Pillowball Rear GDA Mount (MPN 658 420 A) replaces factory rubber upper shock mounts with spherical pillow ball bearings on 2001-2007 Subaru Impreza GD/GG chassis models. This direct replacement delivers sharper rear suspension feedback and reduces bushing deflection for better cornering on street or track. Precision engineering ensures compatibility with aftermarket coilovers while maintaining OEM geometry.
Key Features
- Spherical Pillow Ball Bearing: Eliminates rubber compliance for direct shock movement and immediate road feedback during aggressive driving
- CNC Machined Aluminum Housing: Provides lightweight strength at 1.10 lbs to cut unsprung weight without sacrificing durability
- Direct Bolt-On Design: Matches OEM mounting points for simple installation on GD/GG chassis without fabrication
- Enhanced Alignment Control: Maintains rear camber and caster under load for consistent tire contact and grip
- Motorsport Tested Construction: Built with high-load bearings proven in rally and circuit applications for long-term reliability
Product Notes
- Will not fit OEM style big spring perch setup verify spring seat diameter before purchase
- Grease bearings periodically during service to extend lifespan
- Ships in protective Cusco box dimensions 5.9 x 5.9 x 3.9 inches
Installation Notes
- Professional installation recommended.
- Remove rear shocks and upper mounts access through trunk or rear seats
- Compatible with Cusco coilovers and most brands confirm perch size excludes OEM large helper springs
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2004-2007 | Subaru | Impreza | WRX STI |
| 2007 | Subaru | Impreza | WRX STI Limited |
| 2006-2007 | Subaru | Impreza | WRX TR |
| 2006-2007 | Subaru | Impreza | 2.5i |
| 2001 | Subaru | Impreza | L |
| 2001-2004 | Subaru | Impreza | Outback |
| 2005-2007 | Subaru | Impreza | Outback Sport |
| 2001-2005 | Subaru | Impreza | RS |
| 2002-2004 | Subaru | Impreza | TS |
| 2002-2007 | Subaru | Impreza | WRX |
| 2006-2007 | Subaru | Impreza | WRX Limited |
Why Choose Cusco?
- 40 years of Japanese suspension manufacturing expertise
- Components trusted by World Rally Championship teams
- Every part precision-assembled for exact fit and function
Frequently Asked Questions
-
Q: Will this fit my 2004-2007 Subaru Impreza WRX STI GDA chassis?
A: Yes fits all listed 2001-2007 Impreza GD/GG models including WRX STI WRX RS but excludes OEM big spring perch setups -
Q: What materials are used in the mount?
A: Features a 50mm spherical pillow ball bearing in durable CNC aluminum housing with steel reinforcement for high-load performance -
Q: What is the warranty and install process?
A: Cusco provides 1-year manufacturer defect warranty bolt-on install takes 1-2 hours per side professional alignment advised after install
Shipping & Handling
- Method: UPS Ground or FedEx
- Availability: In stock - ships same or next business day
- Packaging: Original Cusco box 5.9 x 5.9 x 3.9 inches
- Weight: 1.10 lbs
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