ST Sport Suspension Kit - 30/30 - 3 -series; E90, E91, E92, E93 (390L, 392C, 3C, 3K, 3L), Cabriolet / convertible 03/07- 318i, 320i, 320d

Unlock sharper handling and a purposeful stance for your BMW E9x with the ST performance spring and damper set. This fast-road upgrade delivers an even 30 mm drop at both ends for confident cornering, improved stability and a clean, factory-plus look.

Perfect for daily driving and spirited B-road runs, this matched shocks and springs package replaces tired OE components with carefully tuned hardware for balanced control and comfort. We have installed this kit on customer cars and in our own builds, and feedback has been consistently positive for road feel, grip and ride refinement.

• Even ride height reduction - approximately 30 mm front and 30 mm rear for a level, aggressive stance
• Progressive-rate coils for compliance over rough surfaces with extra support in hard cornering
• Vehicle-specific twin-tube shock absorbers for consistent damping and confidence on British roads
• High-strength spring steel, multi-layer coated with a durable epoxy finish for long-term corrosion resistance
• Low-friction internals and robust sealing for reliability and consistent performance

Compatibility and key data

• Chassis fitment: BMW 3 Series E90 saloon, E91 Touring estate, E92 coupé, E93 cabriolet
• Model references: 390L, 392C, 3C, 3K, 3L
• Engines supported: 318i, 320i, 320d
• Cabriolet build date note: 03/07 onward
• Engine output range: 95 kW to 200 kW
• Max front axle load: up to 930 kg
• Max rear axle load: up to 1200 kg
• Lowering F R: 30 mm front - 30 mm rear

Why choose this upgrade

• Sharper turn-in and reduced body roll for more precise steering response
• Comfortable street manners with a premium, OE-like ride quality
• Matched springs and dampers for a plug-and-play installation
• Ideal for fast-road setups, daily drivers and subtle stance builds

Professional installation

Want it fitted right first time We offer expert installation, alignment and setup at MJ Modifications in Warwickshire. Email info@mjmodifications.co.uk for a fitting quote and availability.

Notes

• Please verify axle loads and model details before ordering to ensure a perfect match.
• Images are for illustration where used and may differ slightly by application.

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