Whiteline Forged Aluminum Rear Sway Bar Mounts 24mm – 2002-2007 Subaru WRX / STI / 1993-2007 Impreza / 1990-1999 Legacy

Whiteline Forged Aluminum Rear Sway Bar Mounts 24mm – 2002-2007 Subaru WRX / STI

Heavy-Duty 24mm Rear Bar Mounting for the GD WRX and STI
Whiteline’s KBR21-24 forged aluminum rear sway bar mount kit provides upgraded mounting hardware for 24mm diameter rear sway bars on the 2002-2007 Subaru WRX and STI. Forged aluminum mounts are significantly stronger and stiffer than OEM stamped steel hardware — for maximum rear bar effectiveness at track and competition stiffness levels.

DETAILS

• Forged aluminum construction for superior strength over OEM stamped steel
• Designed for 24mm rear sway bar diameter on GD WRX and STI
• Precise bar positioning under maximum cornering loads
• Fitment: 2002-2007 Subaru WRX and STI (GD chassis)
• Use with matching 24mm polyurethane mount bushing

When 24mm Mounts Are Needed
Running the 24mm BSR36XZ rear bar or equivalent for track and competition use generates higher mounting loads than the factory rear bar. Forged aluminum mounts handle these loads without the flex that can occur in OEM stamped steel hardware under sustained track-level cornering.

Track Application Hardware
The KBR21-24 is performance hardware for serious applications. Combined with the 24mm rear bar and matching polyurethane bushing, it provides a complete, high-stiffness rear bar mounting system.

Pair With Matching Bushing
Use with Whiteline’s 24mm polyurethane mount bushing for the GD rear bar position.

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

Forged aluminum mount hardware for 24mm GD WRX/STI rear bar installations. 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

• Forged aluminum construction for superior strength over OEM stamped steel
• Designed for 24mm rear sway bar diameter on GD WRX and STI
• Precise bar positioning under maximum cornering loads
• Use with matching 24mm polyurethane mount bushing

Fitment