COBB Tuning Front Control Arm Innner Bushing Kit w/ Offset Alignment – Subaru Models (inc. 2015-2021 WRX / STI)

Cobb Front Control Arm Inner Bushing Kit with Offset Alignment — 2015-2021 Subaru WRX / STI

The Cobb Front Control Arm Inner Bushing Kitwith Offset Alignment for the 2015-2021 Subaru WRX replaces the factory front lower control arm inner bushings withoffset eccentric units that provide additional negative front camber adjustment.

DETAILS

• Platform: 2015-2021 Subaru WRX
• Front control arm inner bushing kit — offset for additional negative camber
• Replaces factory inner bushings at front lower control arm
• Tighter durometer than factory rubber — reduced geometry deflection
• All hardware included

Control Arm Bushing: Offset Alignment

Control arm geometry determines the relationship between the wheel, the hub, and the chassis — as the suspension travels up and down, the control arm geometry defines how the wheel’s camber, toe, and track width change. On a stock suspension alignment, the control arm length and geometry are fixed from the factory to a specific alignment specification. When the car is lowered — whether through lowering springs, coilovers, or even manufacturing variation — the control arm geometry changes relative to the intended design position, producing camber and toe that falls outside the factory specification range. Cobb’s adjustable control arms add adjustment capability to bring the alignment back within specification, or to set the alignment to a more performance-oriented position.

Alignment Adjustment Range and Spherical Rod End Precision

Adjustable control arms use eccentric bolts, slotted mounting points, or adjustable length rod ends to provide a range of adjustment at the wheel. The camber-adjustable rear lower control arm allows negative camber to be dialed in at the rear — negative camber keeps more of the tire contact patch on the road surface during cornering where suspension load causes the wheel to lean outward. The toe arm adjustment provides rear toe control — small amounts of rear toe-in improve stability under deceleration and during the entry phase of corners. Both adjustments are made with the car at ride height and locked in place — they do not require ongoing adjustment during normal driving. The offset inner bushings provide additional negative front camber beyond what the factory alignment range allows — useful for builds running wider tires or that are lowered beyond the factory alignment adjustment range.

What’s in the Box

• Cobb front control arm inner bushings
• All hardware

Why Choose Cobb Tuning

Cobb Tuning has been developing performance software and hardware for turbocharged enthusiast vehicles since 1999. Founded in Austin, Texas, Cobb built its reputation on the Accessport and expanded into a full catalog of hardware engineered to complement it. Every OTS map is developed in-house on real vehicles, and every hardware product is validated as part of a complete system — not sourced and sold in isolation. That integrated approach is why Cobb produces consistent, reliable results across the builds we see every day.

The RallySport Take

The Cobb bushing kit for the 2015-2021 Subaru WRX is the alignment correction solution for VA WRX and STI builds that have been lowered or that require alignment adjustment beyond the factory range for performance driving.

Fitment

Year	Make	Model	Notes
2015-2021	Subaru	WRX	FA20DIT
2015-2021	Subaru	WRX STI	EJ257