Whiteline Front Sway Bar 24mm Adjustable – 2008-2014 Subaru STI / 2011-2014 WRX / 2009-2013 Forester XT

Whiteline Front Sway Bar 24mm Adjustable – 2008-2014 Subaru STI / 2011-2014 WRX

Track-Level Front Roll Control for the GR/GV WRX and STI
The Whiteline BSF39XZ is a 24mm 3-point adjustable front sway bar for the 2008-2014 STI and 2011-2014 WRX (GR/GV chassis). Stepped up from the 22mm street bar, the 24mm provides additional front roll stiffness for track-focused builds. Three adjustment positions allow fine-tuning within the performance range.

DETAILS

• 24mm 3-point blade adjustable front sway bar
• Solid spring steel, silver powder coat
• Includes mount bushings and hardware
• 3 adjustment positions
• Fitment: 2008-2014 Subaru STI and 2011-2014 WRX (GR/GV chassis)

STI and WRX Applications at 24mm
The GR/GV STI benefits from 24mm front stiffness on track configurations. The GR/GV WRX at 24mm is appropriate for autocross and track builds where maximum front roll control is desired. For the WRX, a matched rear bar upgrade is important to avoid excessive understeer.

Three Positions for Setup Flexibility
All three positions are in the performance range. Start at the middle for most track use. Adjust based on circuit characteristics, tyre compound, and rear bar setup.

Complement With Matched Rear Bar
The BSF39XZ is most effective when the rear bar is also at a matched stiffness level. Whiteline’s BSR49 series covers the GR/GV rear in multiple diameters.

Why Choose Whiteline

Whiteline has been engineering suspension components from their facility in Australia since 1979. Every product in their catalog is developed with a clear goal: measurable improvement in handling, stability, and tyre contact. Whiteline’s polyurethane bushings, sway bars, control arms, and alignment correction kits are engineered using finite element analysis and validated on track before they reach the market. Their components are direct-fit, bolt-on solutions designed for enthusiasts who want real performance gains without fabrication or custom work.

The RallySport Take

The correct 24mm front bar for GR/GV STI and WRX track builds. Well-positioned between the street and maximum-stiffness options. Installation is a straightforward bar swap — remove the OEM bar, install the Whiteline unit with the provided polyurethane mount bushings, connect the endlinks. Start in the middle adjustment position and move from there. Adjustable endlinks are a worthwhile companion purchase if the car has been lowered, ensuring the bar operates at zero preload at the new ride height.

What’s in the Box

• 24mm 3-point blade adjustable front sway bar
• Solid spring steel, silver powder coat
• Includes mount bushings and hardware
• 3 adjustment positions

Fitment