ST X (STX) Coilovers for BMW Z4 E89 Roadster (2009-2016) - Adjustable Ride Height Suspension Kit by ST Suspensions (KW Engineered) - Coilover Lowering Springs & Shocks - Fast Road Handling Upgrade

Height Adjustable Suspension for BMW Z4 E89 2009 on

Transform the way your BMW Z4 drives and looks with this German engineered height adjustable suspension system from ST Suspensions by KW. Perfect for fast road use and daily driving, it delivers a confident drop, sharper turn in and tidy ride quality without the crashiness of budget kits. If you want precise ride height control, improved stability and a proper stance for your E89 roadster, this is the upgrade to fit.

Why enthusiasts choose this setup

• Ride height adjustment for a tailored drop and enhanced stance
• Fast road performance with reduced body movement and cleaner cornering
• Twin tube dampers with quality internals for consistent road holding
• Galvanised threaded bodies with additional coating for serious corrosion resistance
• Comprehensive kit with matched springs, bump stops and dust protection
• Developed and manufactured by KW Automotive for durability and precision

Lowering range and axle loads

Front drop: 15 to 40 mm

Rear drop: 10 to 35 mm

Maximum permitted axle weight

• Front: up to 870 kg
• Rear: up to 1000 kg

Please check your vehicle’s VIN plate to confirm axle loads before ordering.

Fitment

Designed for BMW Z4 E89 models from 2009 onwards. This threaded shock and spring assembly provides front and rear height adjustment where applicable for a balanced drop and level ride.

Real world results

We run these on customer cars and the feedback is consistently positive. Expect a tighter, more composed feel, confident turn in and a cleaner, more aggressive stance. The balance between comfort and control is exactly what you want for UK roads.

Perfect for

• BMW Z4 owners seeking a quality lowering kit with proper ride height control
• Drivers wanting better handling, less squat and roll, and improved steering response
• Enthusiasts after a reliable, corrosion resistant solution backed by KW expertise

Key features at a glance

• Height adjustable suspension for precise stance and usability
• High quality twin tube dampers for dependable road performance
• Robust sealing package to help keep out dirt and grime in all weather
• Engineered spring rates for fast road confidence and daily comfort

Professional fitting and setup

Want it installed correctly with alignment and ride height set to your goals? We can help. MJ Modifications in Warwickshire offers professional fitting and geometry. Request a quote at info@mjmodifications.co.uk.

Search friendly terms

BMW Z4 E89 suspension upgrade, adjustable ride height kit, performance road springs and shocks, lowering suspension for BMW Z4, KW engineered ST suspension, coilover suspension for BMW roadster, stance and handling package, fast road suspension UK.