ST Suspensions by KW Sport Lowering Springs Kit 20mm/20mm Drop for BMW 4 Series F32 Coupe & F33 Convertible 435i xDrive AWD/4WD (2013-on) - Performance Suspension Coil Spring Upgrade, Adaptive Damper Compatible

Transform the stance, sharpen the drive

Give your BMW 4 Series 435i xDrive the road presence and handling response it deserves with this ST sport spring set, engineered for the F32 coupe and F33 convertible from 2013 onwards. Expect a tasteful 20 mm drop at both ends for a lower centre of gravity, tighter body control and a cleaner, more aggressive look that reduces unsightly wheel arch gap while retaining day-to-day comfort.

This upgrade works perfectly with the factory dampers, including electronically controlled setups. Built to OEM-level standards, these coils are multiply tempered, epoxy coated and made from high-grade chrome-silicon steel for long-term durability through British weather and year-round use.

Why enthusiasts choose this ST spring kit

• Visibly lower ride height - approx. 20 mm front and 20 mm rear
• Enhanced cornering stability and improved steering precision
• Vehicle-specific spring rate for balanced road manners
• Compatible with stock shocks and adaptive dampers
• OEM-quality construction - multiply tempered chrome-silicon steel
• Epoxy coated for corrosion resistance
• Partly tubed for added protection where required
• Direct fit for the specified model and axle loads

Fitment and technical info

• Platform: BMW F32 coupe and F33 cabriolet - 435i xDrive - all-wheel drive
• Model years: 2013 onwards
• Engine output reference: 225 kW
• Approximate lowering: 20 mm front - 20 mm rear
• Maximum front axle load: 1030 kg
• Maximum rear axle load: 1120 kg

We run these springs on customer cars and the feedback is consistently positive: improved grip and confidence on B-roads, a purposeful stance and a quality ride that suits daily driving. If you want a no-compromise suspension refresh without going to coilovers, this is the sweet spot.

What you get

• Front and rear ST sport springs - vehicle specific
• Installation guidance and axle load notes

Professional installation

For fitting, alignment and setup, book with MJ Modifications in Warwickshire. Request a quote at info@mjmodifications.co.uk.

Search-friendly terms

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