Performance M
STX Coilover Kit - 4-series (F32, F33, F36); (3C) convertible; 2WD without electronic dampers max. allowed axle weight in kg Front: -960
STX Coilover Kit - 4-series (F32, F33, F36); (3C) convertible; 2WD without electronic dampers max. allowed axle weight in kg Front: -960
Heads-up on cancellations & returns: if you cancel an order or return an item, you won't get back 100% of what you paid. We apply a 10% restocking fee, the outbound shipping is non-refundable, and we have to pass on Shopify / PayPal payment processing fees; these aren't returned to us when we refund you. International orders also lose on exchange-rate spread in both directions. If the original packaging is damaged or missing, a reboxing charge applies. For international orders specifically, if you refuse to pay our shipping invoice or supply a prepaid label after placing the order, the same deductions apply. We're upfront about this — please be sure of your purchase before ordering.
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BMW 4 Series F32 F33 F36 height adjustable suspension - engineered by ST with KW expertise
Transform the way your BMW drives and looks with this ST X height adjustable suspension system. Built by KW Automotive for outstanding quality, this spring and damper package delivers precise control, sharper turn in, reduced body movement and a purposeful stance. Ideal for daily road use and weekend B-road blasts, this is a proven upgrade for owners who want confidence, comfort and performance in one bolt-on kit.
Fitment and vehicle notes
- Compatible with BMW 4 Series: F32 Coupe, F33 Convertible, F36 Gran Coupe
- Rear-wheel drive models only - suits vehicles without adaptive damping - non EDC
- Maximum permitted axle loads: Front up to 960 kg, Rear up to 1265 kg
Ride height adjustment
- Front lowering range: 40 to 65 mm
- Rear lowering range: 40 to 65 mm
Why this suspension upgrade
- Height adjustable for the perfect stance and corner balance
- Sporty handling with excellent road manners - flatter cornering and improved agility
- Precision-engineered dampers for consistent performance in all weather
- Corrosion protected struts with long-life components for durability
- Low-friction internals and chrome-finished piston rods for smooth operation
- Robust dust boots and sealing package keep contaminants out
What you get
- Front and rear height-adjustable struts and matched springs
- Adjuster collars for easy ride height changes
- Bump stops and dust covers where required
Real-world results
We have installed this setup on customer 4 Series models and on our own builds. Feedback is consistently positive: tighter steering response, more composure over uneven roads and a clean, level drop without harshness. If you want a performance suspension kit that looks right and drives even better, this is a brilliant choice.
Popular search terms to help you find the right kit
BMW 4 Series suspension upgrade, F32 adjustable suspension, F33 cabriolet lowering kit, F36 Gran Coupe sport suspension, height adjustable shocks, coil over shock absorbers, lowering springs and dampers, stance and handling package, non EDC RWD suspension, KW engineered coilover system, performance chassis tuning for BMW.
Professional fitting
Want it installed correctly first time with fast turnaround and proper alignment setup? Book professional fitting with MJ Modifications in Warwickshire. Email info@mjmodifications.co.uk for a quote and availability.
Note: Always check axle loads and vehicle specification before ordering to ensure compatibility with your car.
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