Bilstein B6 Sport HD Rear Shock/Damper 24-006125 for BMW E21 3 Series (1975-1984) 315 316 318 318i 320 320i 320/6 323i & ALPINA E21 B6 C1 - Gas Pressure Monotube, Yellow, OE Replacement Upgrade, Stock Height (BILSTEIN-24-006125)

Bilstein 24-006125 Rear Damper Upgrade for BMW E21 and ALPINA E21

Transform the way your classic drives with the Bilstein B6 rear damper, part number 24-006125 / BILSTEIN-24-006125. This uprated replacement delivers crisp body control, enhanced composure and a planted rear end without spoiling day-to-day comfort. Ideal for spirited road use and real-world British roads, it is the go-to choice for owners who want factory-like refinement with a sharper, more confidence-inspiring feel.

We run B6 units on our own cars and customer builds and the feedback is consistently outstanding. Expect tighter handling, better stability over bumps and improved grip when pressing on. Customers love the predictable response, the precise chassis behaviour and the way it teams perfectly with standard ride-height springs.

What makes this B6 rear damper special

• Uprated OE-plus solution that sharpens handling while keeping ride quality civil
• Pressurised single-tube design for fast, consistent damping and high traction
• Excellent lane stability and reduced squat, dive and roll during everyday driving
• Works with factory coils, so no need to change springs or alter ride height
• High reserves for demanding conditions and frequent loads
• Fine-tuned on the road for real-world performance and control
• Iconic yellow finish that enthusiasts recognise instantly

Key specifications

Vehicle suitability

ALPINA

• B6 (E21) 2.8 03.78 to 03.83
• C1 (E21) 2.3 03.80 to 07.83

BMW

• 3 Series E21 06.75 to 03.84
• Models: 315, 316, 318, 318i, 320, 320i, 320/6, 323i

Part numbers and identifiers

• Part number: 24-006125 / BILSTEIN-24-006125
• Manufacturer: Bilstein
• EAN: 4025258498207
• UPC: 651860648774

Fitting and support

Professional installation recommended. MJ Modifications in Warwickshire offers expert fitting and setup for classic BMW and ALPINA platforms. Request a fitting quote at info@mjmodifications.co.uk.

Compatibility check

We will verify fitment before dispatch. Add your UK registration or the last 7 digits of your VIN at checkout to ensure this damper fits your car.

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Why buy from us

Enthusiast-run, hands-on and focused on results. We have installed and driven on these dampers, and our customers rate the control, comfort and durability. If you want a stock-height setup with sharper response and superior composure, this is the smart choice for your E21.