ST Suspension XA Coilover Kit BMW 3 & 4 Series F31 F34 F33 F36 (Gran Coupe/Convertible) - Height & Rebound Adjustable Coilovers - Non xDrive - KW Engineered - 1822000J

BMW F33 F36 Suspension Upgrade by ST XA | Part No. 1822000J

Looking to drop your BMW 4 Series without ruining comfort and control? The ST XA adjustable suspension kit brings the look, the grip and the confidence you want for UK roads. Built in collaboration with KW Automotive, this height-adjustable spring and damper package lets you fine tune rebound with an easy-to-reach adjuster, so you can go from supple daily driving to taut, fast-road precision in seconds.

We have fitted these on customer cars and our own builds. Feedback has been consistently positive: tighter body control, flatter cornering, better steering response and a purposeful stance that still rides well. If you are searching for a premium suspension kit for BMW F33 Convertible or F36 Gran Coupé that balances performance with everyday usability, this is the one.

Why it stands out

• Rebound tuning at the top of the piston rod for on-car, tool-free fine adjustment.
• Precise ride-height set-up via threaded bodies for the exact drop and stance you want.
• Twin-tube dampers with low-friction internals for composed handling and reduced roll.
• Galvanised, multi-sealed struts for durability and corrosion resistance through all seasons.
• Sharper turn-in and improved stability compared with standard suspension.
• KW-derived technology for proven performance on the road.

Lowering capability

• Front: approx. 40 mm to 64 mm
• Rear: approx. 40 mm to 64 mm

Key details

• Version: XA
• Adjustment: Rebound
• Construction: Galvanised steel bodies
• Part number: 1822000J

Vehicle compatibility

• BMW 3 Series F31 F34 2012 to 2019
  • 318d, 320d, 320i, 325d, 330d, 330i, 335i, 340i
• BMW 4 Series F33 F36 2014 to 2020
  • 420d, 425d, 425i, 428i, 430d, 430i, 435i, 440i

Important notes

• Not suitable for xDrive models.
• Cars with EDC electronic damper control are not applicable.
• With factory wheels and tyres, spacers may be required.

Engineered with KW Automotive

The XA series uses KW know-how and a robust twin-tube layout with pressure-resistant housings. The rebound adjuster is positioned at the top of the chromed rod, making it quick to dial in firmer control for spirited driving or soften things for rougher tarmac. Multiple sealing on the galvanised bodies helps maintain performance mile after mile in British weather.

Professional fitting and alignment

For best results, have the kit installed and aligned by specialists. MJ Modifications in Warwickshire offers expert fitting and set-up. Request a quote: info@mjmodifications.co.uk.

Warranty

Two-year manufacturer warranty.

Search-friendly terms our customers use

BMW F33 suspension kit, BMW F36 suspension kit, BMW 4 Series Gran Coupé suspension, BMW 4 Series Convertible suspension, adjustable shocks BMW 4 Series, height adjustable suspension BMW, rebound adjustable shocks BMW, sport suspension BMW 428i 430i 435i 440i, lowering solution BMW F33 F36, drop kit BMW 4 Series, performance shocks and springs BMW, KW technology suspension, street and fast-road suspension BMW, stance suspension BMW 4 Series, 1822000J ST XA.