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OE-Matched Damping for Your X5 or X6's Adaptive Suspension
The Bilstein 20-328955 is a B4 OE Replacement DampTronic twin-tube shock for the rear left position on the 2019 and newer BMW X5 and 2020 and newer BMW X6. Built to work with your vehicle's factory electronic damping control, it restores the original ride and handling characteristics using Bilstein's gas-pressure twin-tube design, so you get OE-matched performance without changing your factory springs or DampTronic settings.
Key Features
- Direct OE-style replacement for the factory rear left DampTronic shock.
- Gas-pressure twin-tube construction.
- Works with the factory electronic damping control system.
- Spring-bearing design, compatible with factory springs.
- Bottom eye, top pin mounting.
Fitment
| Year | Make | Model | Position |
|---|---|---|---|
| 2019+ | BMW | X5 | Rear Left |
| 2020+ | BMW | X6 | Rear Left |
For vehicles equipped with electronic suspension control (DampTronic) or standard suspension. Not intended for vehicles with air suspension.
Specifications
| Detail | Value |
|---|---|
| Brand | Bilstein |
| Series | B4 OE Replacement (DampTronic) |
| Position | Rear Left |
| Construction | Twin-tube, gas pressure |
| Design | Spring-bearing damper |
| Mounting | Bottom eye, top pin |
| Warranty | Limited lifetime |
What's Included
- One Bilstein 20-328955 rear left shock absorber
About Bilstein
Bilstein is a German shock absorber manufacturer that supplies original equipment dampers to major automakers, with the B4 OE Replacement DampTronic line built to restore factory ride and handling characteristics on vehicles equipped with electronic damping control.
FAQ
Does this shock work with my factory electronic suspension settings?
Yes, it is designed to function with the factory DampTronic electronic damping control system.
Which side does this shock fit?
The rear left position.
Do I need to replace both rear shocks at the same time?
Bilstein and most suspension technicians recommend replacing shocks in pairs for even handling, though this listing is for the left side only.
Will this work with my factory springs?
Yes, it uses a spring-bearing design that is compatible with the factory springs.
What type of internal construction does this shock use?
Gas-pressure twin-tube construction.
What warranty does this shock carry?
A limited lifetime warranty to the original purchaser.
Is this shock compatible with air suspension equipped vehicles?
No, this shock is intended for vehicles with standard or DampTronic electronic suspension, not air suspension.
What mounting style does this shock use?
Bottom eye with a top pin mount.
Installation Instructions
- Raise and safely support the vehicle, then remove the rear left wheel for access.
- Support the rear suspension and disconnect the factory DampTronic electrical connector from the shock, if equipped.
- Remove the factory rear left shock from the top pin and bottom eye mounting points.
- Install the 20-328955 shock at the same mounting points, reconnecting the DampTronic electrical connector if applicable.
- Torque all mounting hardware to BMW's specification, then reinstall the wheel.
- Lower the vehicle and verify the electronic suspension system reads no fault codes before returning to normal driving.
Bilstein
Bilstein shocks and suspension are stocked at Black Ops Auto Works across the full product range, including B4 OE replacement shocks, B6 performance shocks, B8 5100 ride height adjustable shocks, B8 6112 and 8112 suspension kits, B8 TerraSport lift kits, B12 Pro-Kit systems, B14 coilovers, B16 DampTronic suspension, and EVO Series kits. Every product is filterable by year, make, model, trim, and drivetrain so the correct Bilstein part ships the first time. Black Ops Auto Works carries 2,108 Bilstein SKUs spanning trucks, SUVs, crossovers, and European performance platforms. What This Collection Covers Bilstein is a monotube shock and suspension manufacturer known for consistent damping control across a wide range of applications, from OE-style replacement to serious off-road lift setups to European performance suspension. Product Categories B4 OE replacement shocks and struts, B6 performance shocks, B8 5100 and 5160 shocks, B8 6100 and 6112 suspension kits, B8 8100 and 8112 rese...
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