Whiteline BSF39Z 22mm Heavy Duty Adj Front Sway Bar for 2007-2014 Subaru WRX/STI

Vehicle Fitment

• 2007-2011 Subaru Impreza WRX STI (GE/GH Platform, 2.5L Turbo H4, AWD) - Turbo Models Only
• 2011 Subaru Impreza WRX (GH/GR Platform, 2.5L Turbo H4, AWD) - Turbo Models Only
• 2012-2014 Subaru WRX (GV/GR Platform, 2.5L Turbo H4, AWD) - Turbo Models Only
• 2012-2014 Subaru WRX STI (GV/GR Platform, 2.5L Turbo H4, AWD) - Turbo Models Only
• 2008-2013 Subaru Forester XT (SH Platform, 2.5L Turbo H4, AWD) - Turbo Models Only

Fitment Notes

• Fits turbo (Turbo H4) models only - does not fit naturally aspirated Impreza, WRX, or Forester variants
• Does not fit 2008-2010 Subaru Impreza WRX (GE/GH) - non-turbo base Impreza only in those years; WRX fitment begins with 2011 GH/GR transition year
• Does not fit 2015+ Subaru WRX or WRX STI (VA platform) - see BSF41Z or alternate Whiteline PN for those applications
• Does not fit 2014+ Subaru Forester (SJ platform)
• Wheel alignment not required after installation

Features

• 22mm solid spring steel bar diameter - significantly larger than OEM to dramatically increase front roll stiffness and reduce body roll
• 2-point blade adjustable design allows tuning of bar stiffness to suit street or track driving preferences without replacing the bar
• Heavy-duty Whiteline Synthetic Elastomer (SE) bushings included - engineered for resistance to oil, grease, ozone, and weathering for long service life
• DIY lateral locks prevent sideways movement of the bar under hard cornering loads, maintaining consistent geometry
• Forged bar ends deliver maximum strength and performance at the sway bar link mounting point
• Silver powder coat finish provides a durable, corrosion-resistant hard skin far tougher than conventional paint
• Engineered to spread cornering loads more evenly across all four tires, increasing available grip without sacrificing ride comfort
• Manufactured from finest-grade solid spring steel - not hollow - ensuring superior torsional rigidity and long-term reliability
• Improves tire wear by keeping tires flatter and more upright during cornering, maximizing contact patch
• Covered by Whiteline's 3-Year / 60,000 km warranty on performance products

Specifications

• Bar Diameter: 22mm
• Bar Type: Solid spring steel
• Adjustability: 2-point adjustable (blade style)
• Position: Front
• Finish: Silver powder coat
• Bushing Material: Whiteline Synthetic Elastomer (SE)
• Installation Time: Approximately 1 hour
• Wheel Alignment Required: No
• Warranty: 3 years / 60,000 km
• Part Number: BSF39Z
• UPC: 9319924244270

Included Components

• 1x 22mm Solid Front Sway Bar
• 2x Synthetic Elastomer Mounting Bushings
• 2x DIY Lateral Locks
• 1x Installation Guide

Product Description

The Whiteline BSF39Z is a 22mm heavy-duty, 2-point blade adjustable front sway bar engineered specifically for turbo-equipped Subaru WRX, WRX STI, and Forester XT models from 2007 to 2014. As a direct bolt-on upgrade over the smaller OEM bar, the BSF39Z dramatically increases front roll stiffness, reducing body lean under hard cornering and distributing lateral loads more evenly across all four tires. The result is sharper, more predictable turn-in, improved outright grip, and better tire wear - all without compromising everyday ride quality or comfort.

Whiteline's blade-adjustable design allows you to tune bar stiffness at two distinct positions, giving you the ability to dial in a softer street setting or a stiffer track setup without removing or replacing the bar. The bar is manufactured from solid spring steel - not the hollow construction used by many competitors - and is finished with a durable silver powder coat for long-term corrosion resistance. Included Synthetic Elastomer bushings and DIY lateral locks ensure the bar stays securely positioned under aggressive lateral loads, while the forged end fittings provide reliable, high-strength connection points for your OEM or aftermarket sway bar links.

Installation is straightforward and takes approximately one hour with basic hand tools, and no wheel alignment is required afterward. This sway bar is compatible exclusively with turbocharged variants of the applicable Subaru platforms (GE/GH and GV/GR Impreza WRX/STI, and SH Forester XT) - non-turbo naturally aspirated models are not supported. For WRX and STI owners on the VA platform (2015+), a different Whiteline part number is required. Backed by a 3-year Whiteline warranty, the BSF39Z is the definitive front handling upgrade for GD-era and GR/GV-era performance Subaru owners seeking maximum cornering capability.