ST Suspensions XA (STXA) Coilover Suspension Kit for BMW 4 Series F32 F33 F36 – Coupe, Convertible, Gran Coupe – RWD Non-EDC/No Adaptive – Height & Rebound Adjustable 40–65mm Drop – KW Engineered – Front Axle up to 960kg

Upgrade your BMW 4 Series handling, ride height and road presence

This ST Suspensions XA adjustable coilover system is a proven suspension upgrade for BMW 4 Series F32 Coupe, F33 Cabriolet and F36 Gran Coupe - rear wheel drive models without adaptive damping or EDC. Engineered by KW Automotive, it blends daily comfort with sharp, confidence-inspiring control for fast road and spirited driving.

Who is it for

Ideal if you want precise height control, on-car rebound adjustment and a premium, corrosion resistant damper and spring package that tightens turn-in, reduces body roll and delivers a purposeful stance.

Main benefits

• Height adjustable front and rear - dial in your stance for road or track
• On-car rebound tuning at the top of the piston rod - go firmer for agility or softer for comfort
• KW-engineered twin-tube dampers - consistent performance with low internal friction
• Galvanised struts with additional protective coating - excellent durability in UK weather
• TUV approved adjustment range - precise, repeatable settings
• Complete kit - matched springs, adjustable perches, bump stops and dust boots

Lowering range and axle loads

• Front drop: 40 to 65 mm
• Rear drop: 40 to 65 mm
• Maximum front axle load: up to 960 kg
• Maximum rear axle load: up to 1265 kg

Real-world results

We have fitted these kits to customer cars and our own builds, and the feedback is consistently positive. Sharper steering response, flatter cornering, improved traction and a premium ride quality that makes long journeys easy. Set it soft for commuting, then click it firmer for B-road blasts or track evenings - it genuinely does both.

Compatibility

BMW 4 Series F32 Coupe, F33 Convertible, F36 Gran Coupe - rear wheel drive only - cars without electronic damping control, no adaptive dampers, non EDC.

Why choose ST XA for your 4 Series

• Rebound adjustable shocks for tailored comfort and control
• Even, predictable lowering for that OEM-plus look
• KW quality internals - reliability and performance you can trust
• Excellent corrosion resistance for year-round UK driving

Fitting and setup

Professional installation and alignment are highly recommended. MJ Modifications in Warwickshire can supply, fit and set up your car to your preferred ride height and damping settings. Request a quote at info@mjmodifications.co.uk.

Common search terms

BMW F32 height adjustable suspension, BMW F33 cabriolet suspension kit, BMW F36 Gran Coupe lowering kit, RWD non adaptive suspension upgrade, rebound adjustable shocks for BMW 4 Series, ST Suspensions XA for BMW, coilover suspension for 4 Series, performance suspension upgrade, stance and handling package.