Performance M
STX Coilover Kit - 4-series (F32, F33, F36); (3C) coupe; 2WD without electronic dampers max. allowed axle weight in kg Front: -1090
STX Coilover Kit - 4-series (F32, F33, F36); (3C) coupe; 2WD without electronic dampers max. allowed axle weight in kg Front: -1090
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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ST X Height Adjustable Suspension for BMW 4 Series F32 F33 F36 RWD
Give your BMW 4 Series the drop, grip and confidence it deserves with the ST X height adjustable suspension system. Engineered and produced by KW Automotive for ST, this complete shock and spring package delivers sharper turn-in, flatter cornering and a clean, even stance for daily driving and spirited B-road runs.
Perfect for rear-wheel-drive F32 Coupe, F33 Convertible and F36 Gran Coupe models without factory adaptive dampers, this upgrade unlocks precise ride height control and a genuinely premium feel on UK roads.
Lowering range
- Front: 40 to 65 mm
- Rear: 30 to 60 mm
Axle load suitability
- Front axle: 951 to 1090 kg
- Rear axle: up to 1230 kg
Always confirm axle loads on your vehicle identification plate before ordering.
Why enthusiasts choose ST X for the F3x 4 Series
- Built by KW Automotive for consistent quality and long service life
- Fully threaded strut bodies for precise height adjustment at each corner
- Zinc-galvanised bodies with additional protective coating to help resist corrosion in UK weather
- Twin-tube shock absorbers with chrome-plated piston rods for smooth response
- Composite adjuster collars and threaded spring perches for easy, accurate set-up
- Sport springs, bump stops and dust boots included for a complete installation
- Improved body control with reduced roll and better mid-corner stability
- Comfortable for daily use with a more connected, confident feel
Compatibility
BMW 4 Series F32 F33 F36, rear-wheel drive models without electronic damping control. Ideal for drivers seeking a quality lowering kit, adjustable suspension, and a handling upgrade that works on real UK roads.
Real-world results
We have fitted and driven numerous ST X kits on customer cars and our own builds. Feedback is consistently positive: a tight, planted feel, improved steering response and a purposeful stance without ruining ride comfort.
Get it fitted by specialists
Want it installed right first time? Book professional fitting with MJ Modifications in Warwickshire. Request a quote at info@mjmodifications.co.uk.
Search-friendly terms our customers use
BMW F32 suspension upgrade, F33 lowering kit, F36 Gran Coupe suspension, height adjustable shocks and springs, BMW 4 Series stance kit, adjustable ride height suspension, RWD non-EDC suspension, KW-made ST suspension, performance suspension for BMW F3x, threaded body shocks, twin tube strut kit.
Order your ST X height adjustable suspension today and transform the look and handling of your BMW 4 Series.
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