Performance M
STX Coilover Kit - 3-series (F30, F31); (3L, 3K) station wagon; 2WD without electronic dampers max. allowed axle weight in kg Front: -1020
STX Coilover Kit - 3-series (F30, F31); (3L, 3K) station wagon; 2WD without electronic dampers max. allowed axle weight in kg Front: -1020
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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Height-adjustable performance suspension for BMW 3 Series F30 and F31 estate 2WD non-adaptive
Transform the look and handling of your BMW with this ST X height-adjustable coilover suspension kit. Built by KW Automotive in Germany, it delivers a precise drop, sharper response and real-world comfort for fast road driving, daily use and weekend blasts. We run these on customer cars and the feedback is consistently brilliant for grip, stance and ride quality.
Compatibility and axle loads
- Chassis: BMW 3 Series F30 saloon and F31 estate
- Drivetrain: 2WD models only non xDrive
- Electronic damping: for cars without adaptive dampers EDC
- Maximum permitted axle load in kg: Front 914 to 1020, Rear up to 1265
Lowering range
- Front ride height adjustment: 40 to 65 mm
- Rear ride height adjustment: 30 to 55 mm
Why choose ST X for your F30 or F31
- KW engineered for the perfect balance of comfort and control
- Precision threaded bodies and polyamide adjuster collars for easy height changes
- Galvanised struts with additional coating for excellent corrosion resistance
- Twin-tube dampers with low-friction internals for long-term reliability
- Chrome-plated piston rods, dust boots and bump stops for durability in all weather
- Front and rear adjustment where applicable for a level, dialled-in stance
Real-world benefits
- Noticeably flatter cornering and reduced body movement
- Improved steering precision and confidence at speed
- Clean, even arch gap for the perfect road stance
- Adjustable ride height to suit daily driving, fast road or track day use
What you get
- Complete coilover kit with matched springs and dampers
- Adjustable spring perches and hardware for installation
- Vehicle-specific setup range tested for F30 and F31 2WD non-adaptive cars
Fitment and setup
We highly recommend professional installation and alignment. MJ Modifications in Warwickshire offers full fitting, corner-weighting advice and geometry setup. For a quote, email info@mjmodifications.co.uk.
Helpful notes
- Check your vehicle’s axle weights on the door jamb or VIN plate to ensure compatibility with the listed limits.
- Designed for non-adaptive suspension cars only not suitable for EDC equipped vehicles.
Popular search terms for this kit
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