Bilstein B1 11-305897 Rear Shock Absorber Dust Cover Boot Gaiter & Bump Stop Kit for BMW X3 F25 2010-2017 / X4 F26 2013-2018 - Damper Bellows, Jounce Bumper, Strut Protector (Rear Axle)

Bilstein 11-305897 B1 Rear Damper Gaiter and Bump Stops for BMW X3 F25 and BMW X4 F26

Protect your rear suspension and keep the ride tight with this authentic Bilstein B1 service set, part number 11-305897. Designed specifically for the rear axle of the BMW X3 F25 2010 to 2017 and BMW X4 F26 2013 to 2018, this protection pack replaces tired bellows and jounce bumpers to safeguard your dampers from grit, spray and road salt while reducing knocks and squeaks.

Why this upgrade belongs on your BMW

• OEM-grade Bilstein quality for long-lasting reliability and a factory-fresh feel
• Tailored fit for X3 F25 and X4 F26 rear suspension for straightforward installation
• Shields the shock rod from contamination to help extend damper lifespan
• Refreshes perished boots and bumpstops to reduce noise and harshness over bumps
• Ideal when fitting new rear dampers or performing a suspension refresh service

We have supplied and fitted this Bilstein B1 kit on customer cars and our own builds with excellent results. Owners report a quieter, more composed rear end and improved durability in all weather conditions.

Compatibility

BMW X Series applications on the rear axle:

• BMW X3 F25 09.2010 to 08.2017
  • Petrol: sDrive 20i, xDrive 20i, xDrive 28i, xDrive 35i
  • Diesel: sDrive 18d, xDrive 20d, xDrive 30d, xDrive 35d
• BMW X4 F26 05.2013 to 03.2018
  • Petrol: xDrive 20i, xDrive 28i, xDrive 35i
  • Diesel: xDrive 20d, xDrive 30d, xDrive 35d

Key identifiers

• Part number: Bilstein 11-305897 | BILSTEIN-11-305897
• EAN: 4025258851958
• UPC: 651860859729
• Fitting position: Rear axle
• Manufacturer: Bilstein

Compatibility check before dispatch

We will verify fitment before shipping. Add your UK registration or the last 7 digits of your VIN at checkout so we can confirm suitability for your exact vehicle.

Professional fitting

Want it installed properly first time? Book fitting with MJ Modifications in Warwickshire. Request a quote at info@mjmodifications.co.uk.

Perfect for

• Rear suspension refresh on higher mileage X3 and X4 models
• Replacing cracked bumpstops and split bellows
• Protecting new rear shocks from dirt and moisture
• Quieting clunks and reducing harshness over rough roads

Search-friendly terms and aliases

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