Description
The ST Suspensions ST XA Coilover Kit is designed for drivers who demand more than just ride height adjustment. Engineered by KW Automotive, this coilover system allows individual damping adjustments for a perfect balance between comfort and performance.
Performance and Control
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KW damping technology enables rebound force tuning for a custom driving experience.
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Stiffer rebound improves track stability and reduces body roll.
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Softer rebound enhances comfort and road compliance.
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Agile, precise handling for sporty, confident driving.
Simple Height Adjustment
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Ride height can be adjusted easily using the threaded strut housing.
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Adjustments can be made even when installed by turning the spring perch.
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Each vehicle application has a unique lowering range depending on suspension design.
Durable KW Engineering Construction
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Twin-tube damping with low-friction, pressure-resistant housings.
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Monoblock guide and multi-lip sealing reduce friction and protect against dirt and corrosion.
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Galvanized struts with multiple sealing layers for long-term durability.
Key Features
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18 clicks of adjustable rebound damping
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Individual front and rear height adjustment (where applicable)
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Galvanized coilover struts with anti-corrosion coating
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Adjustable spring perch and multi-coated spring system
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Dynamic elastomer bump stops with dust protection
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Twin-tube dampers with premium components for extended life
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Backed by ST Suspension’s 5-Year Unlimited Mileage Warranty
Vehicle Fitment
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2020 BMW M340i Base – 3.0L L6 B58B30O1, Sedan, GAS, 285 kW, 2998 ccm, 6-speed, RWD
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2021 BMW M340i Base – 3.0L L6 B58B30O1, Sedan, GAS, 285 kW, 2998 ccm, 6-speed, RWD
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2022 BMW M340i Base – 3.0L L6 B58B30O1, Sedan, GAS, 285 kW, 2998 ccm, 6-speed, RWD
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2022 BMW M440i Base – 3.0L L6 B58B30O1, Coupe, MHEV, 285 kW, 2998 ccm, 6-speed, RWD
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2023 BMW M240i Base – 3.0L L6 B58B30O1, Coupe, GAS, 285 kW, 2998 ccm, 6-speed, RWD
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2023 BMW M340i Base – 3.0L L6 B58B30O1, Sedan, GAS, 285 kW, 2998 ccm, 6-speed, RWD
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2023 BMW M440i Base – 3.0L L6 B58B30O1, Coupe, MHEV, 285 kW, 2998 ccm, 6-speed, RWD
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2024 BMW M440i Base – 3.0L L6 B58B30O1, Coupe, MHEV, 285 kW, 2998 ccm, 6-speed, RWD
