Bilstein B1 Service Kit 11-270256 Front Shock Absorber/Strut Dust Boot Gaiter & Bump Stop - BMW 1 Series E81 E82 E87 E88, 3 Series E46 E90 E91 E92 E93, Z4 E85, ALPINA B3 - OEM Damper Bellows Jounce Bumper

Bilstein B1 Service Kit 11-270256 for BMW and ALPINA - Front Strut Bellows and Jounce Bumper - OEM Quality Protection

Keep your front end suspension working at its best with the Bilstein B1 service kit, part number 11-270256. This genuine Bilstein assembly combines a high quality protective sleeve with a robust bump stop to shield the damper piston rod from grit, water and road salt, helping to prevent premature seal wear and safeguarding ride comfort, handling and noise levels.

We run these kits on our own builds and for customers, and the feedback is consistently excellent. If your current bellows are split or the bump stop has perished, this is the direct replacement you want for a factory-fresh feel.

Why this front strut protection kit is a smart upgrade

• Original equipment grade from Bilstein for long term durability
• Precisely matched to Bilstein dampers and OE units for a snug, rattle free fit
• Helps maintain damping efficiency and reduces harsh bottoming on rough roads
• Quiets knocks and creaks caused by torn boots or crumbling stops
• Direct fit on listed BMW 1 Series, 3 Series, Z4 and ALPINA applications

What you get

• Front axle damper sleeve bellows - guards the rod against debris ingress
• Front jounce bumper - progressive stop to control full compression impacts
• OEM grade materials engineered to cope with UK weather and road grime

Fitting position

Front axle

Vehicle applications

Ideal for anyone searching for BMW front strut bellows, damper rod boot, front jounce bumper, piston rod dust guard, strut gaiter or OE spec front suspension protection kit for the following models.

ALPINA

• B3 Coupe (E92) 09.07 - 02.14
  • Bi-Turbo / S Bi-Turbo

BMW 1 Series

• 1 (E81) 09.06 - 12.11
  • 116 i, 118 i, 120 i, 130 i, 116 d, 118 d, 120 d, 123 d
• 1 (E87) 02.03 - 01.13
  • 116 i, 118 i, 120 i, 130 i, 116 d, 118 d, 120 d, 123 d
• 1 Coupe (E82) 10.06 - 10.13
  • 120 i, 125 i, 128 i, 135 i, 118 d, 120 d, 123 d
• 1 Convertible (E88) 12.07 - 12.13
  • 118 i, 120 i, 125 i, 128 i, 135 i, 118 d, 120 d, 123 d

BMW 3 Series

• 3 Convertible (E46) 04.00 - 12.07
  • 318 Ci, 320 Ci, 323 Ci, 325 Ci, 330 Ci, 320 Cd, 330 Cd
• 3 Touring (E46) 06.99 - 05.05
  • 316 i, 318 i, 320 i, 323 i, 325 i, 328 i, 330 i, 318 d, 320 d, 330 d
• 3 (E90) 02.04 - 02.12
  • 316 i, 318 i, 320 i, 320 si, 323 i, 325 i, 328 i, 330 i, 335 i, 316 d, 318 d, 320 d, 325 d, 330 d, 335 d
• 3 Touring (E91) 12.04 - 12.12
  • 316 i, 318 i, 320 i, 323 i, 325 i, 328 i, 330 i, 335 i, 316 d, 318 d, 320 d, 325 d, 330 d, 335 d
• 3 (E46) 12.97 - 05.05
  • 316 i, 318 i, 320 i, 323 i, 325 i, 328 i, 330 i, 318 d, 320 d, 330 d
• 3 Coupe (E92) 01.05 - 12.13
  • 316 i, 318 i, 320 i, 323 i, 325 i, 328 i, 330 i, 335 i, 320 d, 325 d, 330 d, 335 d
• 3 Compact (E46) 03.01 - 02.05
  • 316 ti, 318 ti, 325 ti, 318 td, 320 td
• 3 Convertible (E93) 05.06 - 12.13
  • 318 i, 320 i, 323 i, 325 i, 328 i, 330 i, 335 i, 320 d, 325 d, 330 d
• 3 Coupe (E46) 12.98 - 07.06
  • 316 Ci, 318 Ci, 320 Ci, 323 Ci, 323 i, 325 i, 325 Ci, 328 Ci, 330 Ci, 320 Cd, 330 Cd

BMW Z Series

• Z4 Roadster (E85) 09.02 - 12.09
  • 2.0 i, 2.2 i, 2.5 i, 2.5 si, 3.0 i, 3.0 si

Part numbers

• Bilstein part number: 11-270256
• EAN: 4025258793579
• UPC: 651860798080

Installation

Professional fitment recommended. For expert fitting and alignment, book with MJ Modifications in Warwickshire. Request a quote at info@mjmodifications.co.uk.

Fitment check

We verify compatibility before dispatch. Provide your UK registration or the last 7 digits of your VIN at checkout so we can confirm this is the correct front axle kit for your car.

Also searched as

Front strut bellows, damper rod boot, strut gaiter kit, piston rod dust shield, jounce bumper, front suspension bump stop, front damper sleeve, OE spec front suspension protection, BMW E90 front bellows, BMW E46 front gaiter, BMW E92 jounce stop, BMW E81 damper boot, BMW E93 strut sleeve, Z4 E85 front bump stop kit, ALPINA B3 front damper bellows, Bilstein service kit front.

Buy with confidence

Trusted by our team and our customers, this Bilstein front end protection kit restores refinement and keeps your suspension performing as intended. Add to basket today and protect your investment.