Whiteline Rear Strut Tower Bar – 2002-2007 Subaru WRX/STI Sedan

Whiteline Rear Strut Tower Bar – 2002-2007 Subaru WRX / STI Sedan

Add a Rear Chassis Stiffening Member to Your GD WRX or STI
The Whiteline rear strut tower bar for the 2002-2007 Subaru WRX and STI sedan creates a direct rigid connection between the rear strut towers, reducing chassis flex under cornering loads. The GD chassis is a capable platform, and adding a rear strut brace improves the consistency with which the suspension geometry is maintained during aggressive driving — particularly valuable on a car that sees track days or demanding road use.

DETAILS

• Connects left and right rear strut towers on GD WRX/STI sedan
• Reduces chassis flex under lateral load for improved suspension consistency
• Improves rear end predictability during cornering transitions
• Direct bolt-on: 2002-2007 Subaru WRX and STI Sedan
• Complements front strut tower bar for comprehensive chassis bracing

Front and Rear Together — The Complete Picture
A front strut tower bar is the more common upgrade, but the rear brace addresses a different but equally important source of chassis flex. The rear subframe and strut towers experience significant lateral load during cornering, and the structural path from strut tower to strut tower on the GD sedan has room for stiffening improvement. Combining front and rear bars addresses chassis compliance comprehensively.

Track and Performance Use
At track speeds and cornering loads, chassis flex becomes more significant. The changes in geometry caused by flex show up as inconsistency — the car behaves differently in right versus left turns, or changes character as the chassis heat-soaks. A strut tower bar removes a variable from the equation and makes the chassis more predictable at the limit.

Direct Bolt-On Install
The bar mounts directly to the existing strut tower mounting hardware. No drilling, no modification to the chassis. Install takes under 30 minutes with basic hand tools.

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

A proven chassis upgrade for the GD WRX and STI. If you already have a front strut brace and want to address rear chassis flex, this is the complementary piece. Installation is straightforward — no chassis modification, no special tools beyond basic hand tools. If the front end of your build is already dialed in with fresh bushings and correct geometry, this brace compounds those improvements. If it’s not, start there first and add the brace when the rest is sorted.

What’s in the Box

• Connects left and right rear strut towers on GD WRX/STI sedan
• Reduces chassis flex under lateral load for improved suspension consistency
• Improves rear end predictability during cornering transitions
• Complements front strut tower bar for comprehensive chassis bracing

Fitment