ST Sport Suspension Kit - 30/20 - 3 -series; E90, E91, E92, E93 (390L, 392C, 3C, 3K, 3L), Saloon 01/05-01/12 318i, 320i, 320si

Give your BMW 3 Series the stance, control and confidence it deserves. This ST performance shock and spring package delivers a tasteful ride height drop of 30 mm at the front and 20 mm at the rear, sharpening steering response while retaining everyday comfort. Perfect for E9x models across Saloon, Touring, Coupé and Convertible from 2005 to 2012, including 318i, 320i and 320si.

Why enthusiasts choose this upgrade

• Real-world handling gains, crisper turn in and reduced body roll
• Balanced ride quality for daily driving and B-road fun
• Matched springs and dampers for a cohesive chassis setup
• Factory-level reliability with a premium finish for long-term durability

Key benefits

• Ride height reduction: approximately 30 mm front, 20 mm rear for a purposeful look and improved aerodynamics
• Model-calibrated damping that enhances grip, stability and braking confidence
• Variable-rate coil springs for compliance over bumps and support in hard cornering
• Twin-tube shock absorbers with heat-resistant internals and low-friction sealing for consistent performance
• High-tensile spring steel with multi-layer coating plus an epoxy top coat for excellent corrosion resistance

Fitment and compatibility

Designed for BMW 3 Series E9x platform, petrol models:

• E90, E91, E92, E93 body styles
• 318i, 320i, 320si
• Production years 01/2005 to 01/2012

Technical details

• Lowering front and rear: 30 mm and 20 mm
• Engine output range supported: 95 to 127 kW
• Maximum front axle load: up to 935 kg
• Maximum rear axle load: up to 1085 kg

Built to last

Premium materials, a robust multi-coat finish and an epoxy top layer protect against the elements, while precision guides and seal packs ensure smooth damper operation over time. Expect OE-grade quality with a sporty character.

What you get

• ST matched shock absorbers and lowering springs, model specific for the E9x chassis
• All components engineered to work together for predictable, confidence-inspiring dynamics

Our experience

We have fitted this setup for our own cars and for customers who wanted a sharper, more planted drive without sacrificing comfort. Feedback has been consistently positive on road feel, stance and stability.

Installation and support

This is a straightforward bolt-on upgrade that replaces your original shocks and springs. A four-wheel alignment is recommended after fitting. For professional installation, choose MJ Modifications in Warwickshire. Request a fitting quote at info@mjmodifications.co.uk.

Search-friendly terms

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Check your axle weights and model before ordering to ensure compatibility.