This page covers the Whiteline Front Upper Control Arm Bushing Kit for the 2009-2011 Mazda RX-8 R3 (SE3P). The listing names the R3 trim. You receive 4 bushings and 4 tubes. Whiteline”s note for this fit: Adds 0.5 degrees Camber. This part is for the front of the vehicle. Order it as part number KCA421.
Lowering a car or fitting wider tires can push camber out of the range an alignment shop can correct with factory parts. This offset bushing moves the arm”s pivot point to give the technician more to work with, while also replacing the soft rubber that was there.
Whiteline rates the install as moderate and lists about 3 hours. Plan on a wheel alignment afterward. To go with it on the RX-8, see Adjustable Rear Sway Bar Link, Adjustable Front Sway Bar Link, and Front and Rear Sway Bar Kit.
Features
Specifications
| Part Number | KCA421 |
| Part Name | Control Arm Bushing |
| Vehicle | 2009-2011 Mazda RX-8 R3 |
| Chassis Code | SE3P |
| Bushing 1 Inner Diameter | 12.5 mm |
| Bushing 1 Outer Diameter | 33.1 mm |
| Bushing Quantity | 4 Bushings |
| Grade Type | Performance |
| Inside Diameter | 10.2 mm |
| Installation Difficulty | Moderate |
| Installation Time (hrs) | 3 |
| Kit Contents | 4 Bushings, 4 Tubes |
| Material | Polyurethane |
| Mounting Hardware Included | No |
| Outside Diameter | 33.1 mm |
| Vehicle Placement | Front |
| Wheel Alignment Required | Yes |
| Notes | Adds 0.5Degree Camber |


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