Bilstein B4 Rear DampTronic Shock Absorber for BMW F20 F21 F22 F23 F30 F31 F34 F32 F33 F36 (EDC/xDrive) OE Replacement - Fits 1/2/3/4 Series inc. M135i, M240i, 335i, 440i - Part No. 20-238933

Bilstein B4 DampTronic Rear Damper for BMW F-Series with Adaptive Suspension - Part No. 20-238933

Restore the sharp, factory-fresh feel of your BMW with this Bilstein B4 DampTronic rear damper. Built to original equipment specification and designed for cars with BMW Adaptive M Suspension and Dynamic Damper Control, it is a direct plug-and-play replacement that keeps your driving modes fully functional. Expect crisp body control, refined comfort and dependable stability on British roads without altering ride height.

Part Number: 20-238933

Why this rear damper is a brilliant choice

• Direct replacement for electronically controlled rear suspension - no coding required when replacing like for like
• Retains Comfort, Sport and Sport Plus settings where fitted - full integration with OEM controls
• Gas pressure technology for consistent damping, composure and traction in all conditions
• OE-level fit and finish - quiet operation and precise road feel
• Ideal for daily use, motorway miles and fast B-roads - confidence-inspiring on xDrive and rear-wheel-drive cars
• Perfect for curing knocks, float and instability caused by tired or leaking shocks
• Can be installed as a single unit or as a matched pair for a full rear axle refresh

We run Bilstein B4 DampTronic units on our own builds and have installed them on countless customer cars. Feedback is consistently excellent for ride compliance, steering precision and stability, especially on higher powered models.

What you receive

• 1 x Bilstein B4 DampTronic rear damper - electronic rear shock absorber

Vehicle compatibility

Suits BMW F2x and F3x models with electronic damping. If in doubt, match by part number or contact us with your VIN for confirmation.

1 Series - F20 and F21

114i, 116i, 118i, 120i, 125i, 114d, 116d, 118d, 120d, 125d, xDrive variants, M135i, M135i xDrive, M140i, M140i xDrive

2 Series - F22 and F23

218i, 220i, 228i, 230i, 218d, 220d, 225d, xDrive variants, M235i, M235i xDrive, M240i, M240i xDrive

3 Series - F30, F31 and F34 Gran Turismo

316i, 320i, 328i, 330i, 330e, 335i, 340i, 316d, 318d, 320d, 325d, 330d, 335d, xDrive variants including 335d xDrive and 340i xDrive

4 Series - F32, F33 and F36 Gran Coupé

418i, 420i, 428i, 430i, 435i, 440i, 420d, 425d, 430d, 435d, rear-wheel drive and xDrive versions

Fitment and support

Professional installation recommended. MJ Modifications offers in-house fitting in Warwickshire. For a fitting quote or to confirm compatibility, email info@mjmodifications.co.uk.

Tip for best results: replace rear dampers in pairs and consider refreshing top mounts and associated hardware at the same time.

Manufacturer and warranty

Brand: Bilstein

Warranty: 2 year Bilstein warranty

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