Product Details
The Whiteline Rear Differential Bushings - Mount Support Outrigger fits the 2015 Subaru WRX STI Special Edition. Placement: rear. Trim named on the listing: Special Edition. In the box: 4 bushings, 2 tubes, an install guide, and grease. Whiteline part number: KDT905. Chassis code: VA.
The differential is hung from the chassis on bushings that are soft for comfort. Under hard acceleration and braking they let it rock, so power reaches the wheels a moment late and the rear end can feel loose. A firmer bushing holds the differential more steadily, which sharpens throttle response. Polyurethane resists deflection far better than the soft rubber it replaces.
Whiteline rates the install as difficult and lists about 4 hours. Plan on a wheel alignment afterward. Other Whiteline parts we list for the WRX STI: 14mm Adjustable Front Camber Bolts, Adjustable Front Sway Bar Link, and Rear Subframe Mount Bushing.
Features
- Grease: Molybdenum disulfide grease is included to help the parts last.
- Corrosion protection: The hardware is plated to stand up to road conditions.
- Finish: Powder coat finish guards the metal against chips and corrosion.
- Bushing material: Polyurethane bushings flex far less than rubber ones.
- Install guide: Whiteline packs an install guide with it.
- Bushing compound: The elastomer formulation is chosen to shrug off oil, grease, ozone, and the elements.
Specifications
| Part Number | KDT905 |
| Part Name | Differential Bushings |
| Vehicle | 2015 Subaru WRX STI Special Edition |
| Drivetrain | AWD |
| Chassis Code | VA |
| Bushing Color | Black |
| Bushing Material | Polyurethane |
| Color | Black |
| Durometer | 85 |
| Installation Difficulty | Difficult |
| Installation Time (hrs) | 4 |
| Kit Contents | 4 Bushings, 2 Tubes, Install Guide, Grease |
| Material | Polyurethane |
| Mounting Hardware Included | No |
| Universal or Specific Fit | Specific Fit |
| Vehicle Placement | Rear |
| Wheel Alignment Required | Yes |
| Notes | - |