Whiteline 15mm Rear Sway Bar Mount Bushing Kit – 2002-2007 Subaru WRX (Sedan & Wagon) / 2004-2007 Subaru STI / 2003-2007 Subaru Impreza (Non-Turbo)

Whiteline 15mm Rear Sway Bar Mount Bushing Kit – 2002-2007 Subaru WRX (Sedan & Wagon)

Correct Mount Bushing for a 15mm Rear Bar on the GD WRX
The 15mm rear sway bar mount bushing fits GD WRX configurations running a 15mm rear sway bar. Polyurethane construction over OEM rubber means the bar stays firmly in its mount bracket rather than shifting under load — keeping the full stiffness of the bar available to resist body roll rather than being absorbed by bushing compliance.

DETAILS

• 15mm diameter rear sway bar mount bushing for 2002-2007 Subaru WRX (sedan and wagon)
• Whiteline polyurethane compound
• Knurled inner ID for grease retention and quiet operation
• Direct-fit to OEM rear mount bracket
• Limited Lifetime Warranty

Niche Diameter, Correct Fit
15mm is a less common rear sway bar diameter on the GD WRX, but Whiteline carries the full size range to ensure correct fitment for any bar configuration. Using a correctly-sized bushing — not a slightly oversized bushing that compresses to fit — ensures proper bracket seating and maximum bar location.

The Role of Mount Bushings in Sway Bar Performance
Mount bushings are the foundation of sway bar installation. Their function is to hold the bar in place axially while allowing it to rotate torsionally. A compliant or undersized mount bushing allows the bar to slide sideways in the bracket, reducing the effective stiffness difference between the two sides and degrading anti-roll performance.

Sedan and Wagon
Fits both body styles of the 2002-2007 GD WRX. Confirm your rear sway bar is 15mm before ordering.

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 bushing for a 15mm rear sway bar on the GD WRX. Simple and specific. 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

• 15mm diameter rear sway bar mount bushing for 2002-2007 Subaru WRX (sedan and wagon)
• Whiteline polyurethane compound
• Knurled inner ID for grease retention and quiet operation
• Direct-fit to OEM rear mount bracket

Fitment