Whiteline KTA109 Adjustable Rear Control Arm Kit for 02-07 Impreza/WRX/Forester

Vehicle Fitment

• 2002-2007 Subaru Impreza (WRX / RS / TS / RS-Turbo / Sedan/Wagon, rear beam/independent suspension)
• 2002-2005 Subaru WRX (GD-chassis sedan/wagon, rear toe/camber adjustable)
• 2001-2002 Subaru Forester (SF-chassis, rear suspension geometry correction)

Fitment Notes

• Rear lateral control-arm kit -- replaces factory rear lateral arms and rear arm bushings.
• Allows adjustment of rear toe, camber, and track width to fine-tune handling or correct suspension geometry after lowering or modifications.
• Requires alignment after install. Not compatible with other aftermarket trailing-arm kits or modified rear subframes without checking geometry.

Features

• Four fully adjustable rear control arms with ±50 mm adjustability for precise toe and camber tuning.
• Low-compliance polyurethane bushings for more direct connection between chassis and suspension, reducing flex under load.
• Powder-coated steel arms for corrosion resistance and long-term durability.
• Improved rear-axle stability under cornering, braking, and power delivery -- reduces rear end "squirm."
• Allows track width tuning -- helps for wider wheels or staggered setups.
• Comes with grease-packed bushings for smooth articulation and long service life.
• Direct-fit replacement -- mounts to factory control points, no fabrication required.
• Improves predictability and grip under sport driving or modified suspension conditions.

Specifications

• Part Number: KTA109
• Position: Rear suspension lateral control arms
• Included: 4 adjustable arms (left & right, upper/lower), polyurethane bushings
• Adjustment Range: ±50 mm (toe/camber/track adjustment)
• Bushing Material: Low-compliance polyurethane
• Finish: Powder-coated steel arms (black)
• Compatibility: Selected Subaru Impreza / WRX / Forester 2001-2007 models (see fitment list)

Included Components

• 4x Adjustable rear lateral control arms (left & right)
• Polyurethane low-compliance bushings pre-installed
• All mounting hardware and grease pack
• Installation instructions

Product Description

The Whiteline KTA109 Adjustable Rear Control Arm Kit is a suspension upgrade designed for 2002-2007 Subaru Impreza, WRX and early 2000s Forester models. It replaces the factory rear lateral arms with four fully adjustable steel arms featuring low-compliance polyurethane bushings -- improving rear suspension precision, reducing axle movement under load, and enabling adjustment of toe, camber, and track. This helps correct suspension geometry, particularly after lowering, wheel/tire upgrades, or for competition use.

With ±50 mm adjustment range, KTA109 allows fine-tuning of rear alignment to improve tire contact, traction and handling balance -- whether on the street, autocross, or track. The powder-coated steel arms are built for durability, and the direct-fit design ensures installation uses factory mounting points without fabrication. For drivers seeking sharper rear-end stability, more predictable handling, and improved traction under cornering or spirited driving, this kit offers a proven, effective upgrade path for compatible Subaru models.