ST Suspensions Lowering Springs Kit 30mm F/R for BMW 6 Series E63 E64 Cabriolet/Convertible (2004-2011) - Performance Drop Springs Coil Spring Set - Fits 645Ci 650Ci 635d - Suspension Lowering Upgrade, Adaptive Damper Compatible

Transform the way your BMW 6 Series drives and looks with this ST sport spring set. Engineered for a precise 30 mm drop at the front and rear, it delivers a lower centre of gravity, crisper turn-in and a far more purposeful stance while retaining day-to-day comfort. Perfect for E63 and E64 drop-top models built 04/2004 to 09/2011, covering 645Ci, 650Ci and 635d.

Why enthusiasts choose this upgrade

• Sharper handling with reduced body roll and improved stability at speed
• Even 30 mm ride height reduction front and rear for a balanced, OEM-plus look
• Works with factory dampers, including vehicles with adaptive or electronic control systems
• Vehicle-specific spring rates for confident road manners without harshness
• Chrome-silicon steel, multi-tempered for durability and consistent performance
• Epoxy coated for corrosion resistance to withstand UK road conditions
• Partly tubed design and OE-level manufacturing quality for a refined finish

Fitment and technical details

• Suitable models: BMW 6 Series E63 and E64 convertible variants built 04/2004 to 09/2011 including 645Ci, 650Ci, 635d
• Lowering amount: approx 30 mm front and 30 mm rear
• Power output range: 210 to 270 kW
• Maximum axle loads: front up to 1100 kg, rear up to 1270 kg
• Compatible with cars equipped with adaptive dampers

We fit these on customer cars and the feedback is consistently positive: flatter cornering, better response and a premium stance that complements the 6 Series lines. It is a direct-fit coil spring solution that uses the existing top mounts and standard shock absorbers.

Installation

Professional fitting recommended. For installation in the Midlands, choose MJ Modifications in Warwickshire. Email info@mjmodifications.co.uk for a tailored quote.

Helpful notes

• Please verify your vehicle’s axle weights against the limits above before ordering
• Geometry alignment is recommended after lowering for best tyre wear and handling

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