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COBB Front Control Arm Inner Bushing Kit - STD Alignment
The COBB Front Control Arm Inner Bushing Kit, part CB-4425K, is the standard alignment version of COBB's front inner bushing upgrade for the 2015-2021 Subaru WRX and 2011-2021 STI, distinct from the offset-alignment CB-4428K kit.
Key Features
- Replaces the factory front control arm inner bushings with a fresh, precise-fit bushing
- STD (standard) alignment design maintains factory-style geometry
- Distinct from the offset-alignment CB-4428K kit, which alters alignment geometry
- Improves steering precision by eliminating worn factory bushing play
- Part CB-4425K fits Subaru WRX 2015-2021 and STI 2011-2021
- Requires a wheel alignment after installation
- Kit CB-4425K is pressed in using standard bushing press tooling
Fitment
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2015-2021 | Subaru | WRX | |
| 2011-2021 | Subaru | STI |
Specifications
| Detail | Value |
|---|---|
| COBB Part Number | CB-4425K |
| Alignment Type | STD (standard) |
| Related Part | CB-4428K (offset alignment version) |
| Fitment | 2015-2021 WRX, 2011-2021 STI |
What's Included
- Front inner control arm bushings (kit)
About COBB Tuning
COBB Tuning has engineered performance electronics, intakes, exhausts and suspension components for turbocharged platforms since 2003, building its Accessport ECU flashing device alongside record-tested bolt-on hardware for Subaru, Ford, Honda, Toyota and more.
FAQ
What vehicles does this fit?
It fits the 2015-2021 Subaru WRX and 2011-2021 STI.
What is the difference between this and the offset kit?
This kit is the standard (STD) alignment version. A separate offset-alignment kit is also available from COBB.
Do I need a press to install this?
Yes, a bushing press tool is needed to remove and install the inner bushings.
Do I need an alignment after installing this?
Yes, a wheel alignment is required after installation.
Does this change my alignment geometry?
No, the STD version is designed to maintain factory-style geometry.
What does this kit include?
The front inner control arm bushings for both sides.
Is a warranty included?
Yes, it is covered by COBB's Component Limited Warranty against manufacturing defects.
Can I install this without removing the control arm?
No, the control arm must be removed from the vehicle to press the bushing.
Installation Instructions
- Raise and support the front of the vehicle, then remove the front wheels for access
- Remove the front lower control arm from the vehicle to access the inner bushing
- Press out the factory front inner bushing using a suitable bushing press tool
- Press in the new COBB CB-4425K standard alignment bushing into the control arm
- Reinstall the control arm and torque all mounting bolts to the factory specification
- Have a professional wheel alignment performed after installation
Prop 65 Warning
WARNING: California residents can view COBB's Proposition 65 warning notice on the product listing page for specific chemical exposure information.
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