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Lower Arm Bars are slightly different from other chassis bracing components since it actually solidifies the mechanical working aspects of the suspension. At least two points of these bars are bolted to a moving axis point, typically where the suspension arm meets the cross member/frame to solid points of the chassis to promote the connection.
This light weight aluminum piece bolt's onto the sub-frame of the car in four places, greatly increasing chassis stiffness without adding unnecessary weight.
| Fitment Years | Subaru WRX | Subaru STI |
|---|---|---|
| 2002 | ✓ | |
| 2003 | ✓ | |
| 2004 | ✓ | ✓ |
| 2005 | ✓ | ✓ |
| 2006 | ✓ | ✓ |
| 2007 | ✓ | ✓ |
WARNING: Operating, servicing and maintaining a passenger vehicle or off-road vehicle can expose you to chemicals including engine exhaust, carbon monoxide, phthalates, and lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. To minimize exposure, avoid breathing exhaust, do not idle the engine except as necessary, service your vehicle in a well-ventilated area and wear gloves or wash your hands frequently when servicing your vehicle. For more information go to https://www.P65Warnings.ca.gov/passenger-vehicle.
| Manufacturer's Part Number | 666 477 A |
|---|---|
| SKU | cus666 477 A |
| Brand | CUSCO |
| Product Type | Drivetrain |
| Drivetrain | Mounts and Chassis Bracing |






