ST X Coilover Suspension Kit for BMW E46 3 Series (05/1998-) by ST Suspensions/KW – Height Adjustable Lowering Struts, Shocks & Springs for Saloon, Coupe, Touring, Convertible – Fits 346L 346C 346R

Height-Adjustable Suspension Upgrade for BMW E46 3 Series

Transform your BMW 3 Series E46 with this premium height-adjustable suspension kit engineered by KW Automotive for ST. It delivers seriously improved cornering grip, sharper turn-in and a purposeful stance without sacrificing daily usability. We have fitted this kit on our own builds and countless customer cars and the feedback is consistently excellent on both fast road and spirited B-road driving.

Vehicle compatibility

Designed for BMW E46 3 Series from 05/1998 onwards, including:

• Saloon - Sedan - 4 door
• Coupe - 2 door
• Touring - Estate - Station Wagon
• Convertible - Cabriolet

Body codes: 346L, 346C, 346R

One-piece front main spring specification.

Lowering range

• Front drop: 40 to 75 mm
• Rear drop: 30 to 60 mm

Set your ride height exactly where you want it using the continuous thread height adjustment. Fine-tune the stance for show, fast-road performance, or a balanced daily setup.

Permissible axle loads

• Front axle: up to 1030 kg
• Rear axle: up to 1215 kg

Please verify your vehicle axle weights on the VIN plate before ordering.

Why choose this kit

• KW-engineered twin-tube dampers for confident handling and improved stability
• Continuous height adjustment via robust polyamide adjuster collar
• Galvanised steel struts with additional protective coating for strong corrosion resistance
• Chrome-plated piston rods for longevity and smooth action
• Monoblock guide and comprehensive seal package to keep dirt out in all UK weather
• Complete solution with adjustable spring seat, performance springs, bump stops and dust boots

Real-world results you can feel

Expect a serious reduction in body roll, more confidence in high-speed bends and a planted, precise front end. Customers love the way this kit tightens up the chassis while remaining comfortable enough for daily commuting. It is the ideal E46 suspension upgrade for drivers who want both stance and performance.

Fitting and setup

Professional installation and alignment are recommended. For fitting and geometry setup, book with MJ Modifications in Warwickshire. Email info@mjmodifications.co.uk for a quote and availability.

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