Bilstein B16 PSS9 Coilover Suspension Kit for BMW 6 Series E63/E64 630i 635d 645Ci 650Ci 650i | Ride Height & Damping Adjustable Lowering Coilovers | Street/Track Performance Shocks & Springs | Part 48-123952

Bilstein B16 PSS9 Adjustable Suspension Kit for BMW 6 Series E63/E64

Part Number: 48-123952

Unlock precision handling and a purposeful drop on your BMW 6 Series with the Bilstein B16 PSS9 adjustable suspension system. This damper and spring package is the go-to choice for drivers who want sharper steering response, confident high-speed stability and a clean, even stance. Perfect for spirited road use and track days, the PSS9 gives effortless control over ride height and damping so you can dial in the feel you want.

We have installed and run this kit on customer E63 and E64 cars and the feedback has been consistently excellent. Owners report crisper turn-in, flatter cornering, improved braking stability and genuine day-to-day comfort on British roads. If you are searching for a serious 6 Series suspension upgrade without compromising usability, this is the one.

Features and benefits

• Ride height adjustability for a tailored drop and balanced stance.
• 10-click Dual-Click damping control via aluminium adjusters for quick, repeatable tuning of bump and rebound.
• Threaded bodies for precise corner balance and weight transfer optimisation.
• Lower by up to 50 mm to reduce wheel arch gap and enhance steering precision.
• Confidence-inspiring body control on B-roads and motorways with relaxingly refined road manners.
• Developed and road-tested by Bilstein for consistent performance and stability.
• Technical certification for peace of mind and compliance.

Why this upgrade suits the 6 Series

The B16 PSS9 lets you fine-tune your grand tourer for fast-road driving or occasional circuit work. Set the ride height to your preference, choose a firmer or more supple damping feel in seconds and enjoy predictable, repeatable results. Expect reduced body roll, better traction out of bends and a more connected drive that makes your E63 or E64 feel lighter on its feet.

Vehicle fitment

• BMW 6 Series E63/E64 (2007+)
• Models covered: 630i, 635d, 645Ci, 650Ci, 650i

Fitting and setup

Professional installation, geometry and a proper road test are recommended to get the most from this kit. MJ Modifications in Warwickshire offers expert fitting and setup. For a quotation, email info@mjmodifications.co.uk.

Manufacturer and warranty

Manufactured by Bilstein

2 Year Bilstein Warranty

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Part 48-123952 Bilstein B16 PSS9 adjustable suspension system for BMW 6 Series E63/E64. Height and damping control for a performance-focused setup on road or track.