STX Coilover Kit - 3-series (E90, E91, E93); (390L, 392C, 3L, 3K, 3C) Touring, Cabrio 09/05-

Height Adjustable Suspension Upgrade for BMW 3 Series E90, E91 Estate, E93 Convertible 2005 onwards

Give your E9x a proper drop and a serious handling boost with this adjustable spring and damper package from ST, engineered by KW Automotive. Expect crisp turn in, flatter cornering, tighter body control and a purposeful stance that you can dial in to suit road or track. We have installed many of these kits at MJ Modifications and customer feedback has been outstanding for both performance and ride quality.

• Continuously adjustable ride height for the perfect stance and practical clearance
• Sharper steering response with reduced body roll and improved grip
• Built by KW Automotive for durability and precision
• Twin tube dampers with chrome plated piston rods for long service life
• Galvanised strut bodies with an additional protective coating to resist corrosion
• Low friction internals, mono block guide and high quality seal package to keep out dirt and moisture
• Polyamide composite adjuster rings for easy height changes
• Complete kit with matched springs, adjustable perches, bump stops and dust protection

Lowering range and axle loads

• Front drop: 30 to 60 mm
• Rear drop: 20 to 50 mm
• Maximum permitted axle load: front 1090 kg, rear 1200 kg

Vehicle compatibility

For BMW 3 Series E90 Saloon, E91 Touring estate and E93 Cabriolet, 09/2005 onwards. Applicable to E9x type codes: 390L, 392C, 3L, 3K, 3C.

Why choose this kit

This is a genuine height adjustable coil over suspension solution that enhances everyday drivability while delivering the confidence you want for spirited road use. The wide adjustment window lets you fine tune the ride height for fast road setups, show car stance or balanced daily use.

Professional fitting available

We recommend professional installation and a full alignment after lowering. MJ Modifications in Warwickshire can supply and fit this kit. Request a fitting quote at info@mjmodifications.co.uk.

What you get

• Front and rear dampers with threaded bodies
• Performance coil springs and adjustable spring seats
• Helper components as required, bump stops and dust boots
• Comprehensive installation hardware specific to the platform

Notes: Always verify your vehicle’s axle loads and select a setup within the stated adjustment range. Geometry should be checked and adjusted after installation.

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