Monotube Damping Meets a Lowered Ride Height for the WRX STI
The Bilstein 46-264305 B12 Pro-Kit pairs Bilstein monotube shocks and struts with matched Eibach lowering springs, giving the WRX STI a 20mm front drop and noticeably sharper handling over the factory suspension while keeping ride quality streetable.
Key Features
- Bilstein monotube gas pressure shocks and struts tuned specifically to the matched Eibach spring rates
- Eibach progressive lowering springs drop the front ride height by approximately 20mm
- Non adjustable, factory style damping calibration for a bolt in performance upgrade
- Corrosion resistant zinc coated shock bodies for long service life
- Complete front and rear kit, no mixing of parts from different suspension lines required
Fitment
| Year Range | Make | Model | Trim |
|---|---|---|---|
| 2015-2021 | Subaru | WRX STI | Base |
| 2015-2021 | Subaru | WRX STI | Limited |
| 2015 | Subaru | WRX STI | Launch Edition |
| 2019 | Subaru | WRX STI | S209 |
Specifications
| Detail | Value |
|---|---|
| Part Number | 46-264305 |
| Brand | Bilstein |
| Type | B12 Pro-Kit Suspension Kit |
| Shock Type | Monotube gas pressure, non adjustable |
| Spring Brand | Eibach |
| Front Drop | Approximately 20mm |
| Kit Coverage | Front and rear, complete set |
| UPC | 651860790466 |
What’s Included
- 2x 46-264305 front struts
- 2x rear shocks
- Front and rear Eibach lowering springs
- Mounting hardware
About Bilstein
Bilstein has manufactured monotube shock and strut technology in Germany since 1954, supplying OEM performance programs and the aftermarket alike. The B12 Pro-Kit line pairs Bilstein’s damping expertise with Eibach springs for a matched, bolt in ride height and handling upgrade.
Frequently Asked Questions
What is the 46-264305?
The 46-264305 is a Bilstein B12 Pro-Kit suspension kit combining monotube shocks and struts with Eibach lowering springs for the Subaru WRX STI.
How much does the 46-264305 lower the car?
The kit lowers the front ride height by approximately 20mm compared to factory, with a proportional rear drop for a balanced stance.
Is the damping adjustable on this kit?
No, the B12 Pro-Kit uses a fixed, factory style damping calibration matched to the included Eibach spring rates.
Install Instructions
- Raise and support the vehicle, then remove the wheels for access to the suspension
- Unbolt the factory strut from the knuckle and upper strut mount, then remove it from the vehicle
- Install the 46-264305 strut assembly with new hardware and torque to factory specification
- Repeat the process for the rear shocks and springs, supporting the control arms as needed
- Reinstall the wheels, lower the vehicle, and have an alignment performed before extended driving
Prop 65 Warning
WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, visit www.P65Warnings.ca.gov
