Whiteline Rear Control Arm Upper Front Inner Bushings – 2003-2006 Mitsubishi Evo 8/9

Rebuild the Rear Upper Arm on Your Evo 8 or 9
The rear upper control arm front inner bushing on the 2003-2006 Mitsubishi Evo 8 and 9 is the forward chassis-side pivot of the rear upper arm. When this bushing wears, the arm develops angular play that allows rear camber variation under cornering loads — degrading the rear axle precision that is central to the Evo’s performance character. Whiteline’s polyurethane replacement restores geometric consistency.

DETAILS

• Polyurethane compound for rear upper control arm front inner position on Evo 8/9
• Reduces rear camber variation under cornering loads
• Restores rear axle precision and handling consistency
• Fitment: 2003-2006 Mitsubishi Lancer Evolution VIII and IX
• Limited Lifetime Warranty

Evo 8/9 Rear Upper Arm Geometry
The rear upper control arm on the Evo 8/9 is one of the primary geometry elements controlling rear camber. The front inner bushing is one of two inner mount positions — both should be inspected and replaced together for the most complete upper arm bushing rebuild.

Evo Track and Competition Use
On an Evo used for competition, rear camber consistency is directly related to rear grip consistency and lap time repeatability. Fresh polyurethane bushings throughout the rear suspension are a standard part of any serious Evo build.

Complete Rear Package for the Evo 8/9
Whiteline covers the complete Evo 8/9 rear suspension. The upper arm front inner bushing works alongside the upper arm outer, lower arm inner/outer, trailing arm, and lateral link positions for a comprehensive rebuild.

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

An important rear geometry bushing for the Evo 8/9. Correct rear upper arm geometry is fundamental to consistent rear axle behavior. Budget an afternoon for the job — bushing replacement is not complicated but does require the correct press tools and clean installation technique. Apply grease to all polyurethane-to-metal interfaces and assemble at ride height for correct bushing set. The improvement in chassis feel is immediate and the polyurethane will outlast whatever rubber is in there now.

What’s in the Box

• Polyurethane compound for rear upper control arm front inner position on Evo 8/9
• Reduces rear camber variation under cornering loads
• Restores rear axle precision and handling consistency

Fitment