Whiteline BSR49 Rear Sway Bar - 20mm Heavy Duty for Select Subaru 2008-2021

Fits select 2008-2021 Subaru WRX, STI, Forester, Impreza, Legacy, Outback, and XV Crosstrek models.

The Whiteline BSR49 is a 20mm heavy-duty fixed-position rear sway bar designed to reduce body roll and improve lateral load distribution. By spreading cornering forces more evenly across the tire contact patches, this upgrade increases mechanical grip and sharpens handling response without compromising daily ride comfort. The bar features forged ends for maximum structural integrity at the endlink mounting points and a durable powder-coated finish to resist corrosion and weathering.

This kit includes Whiteline’s advanced synthetic elastomer bushings, featuring internal bore knurling and grease retention lips for superior lubrication and quiet operation. To ensure the bar remains centered under high-G cornering, DIY lateral locks are included to prevent sideways shifting. This is a direct-fit component designed to replace the underpowered factory rear bar for more neutral handling characteristics.

• Part Number: BSR49
• Diameter: 20mm
• Configuration: Fixed Position
• Construction: Forged ends with protective powder coating
• Bushings: Synthetic elastomer with grease retention technology
• Included Components: Sway bar, bushings, lateral locks, and installation guide