KW Variant 1 (V1) Inox-Line Coilover Kit for BMW 4 Series F33 xDrive Convertible – Height Adjustable Stainless Steel – Fits 428i xDrive, 430i xDrive, 435i xDrive, 440i xDrive, 435d xDrive
KW Variant 1 (V1) Inox-Line Coilover Kit for BMW 4 Series F33 xDrive Convertible – Height Adjustable Stainless Steel – Fits 428i xDrive, 430i xDrive, 435i xDrive, 440i xDrive, 435d xDrive
KW Variant 1 (V1) Inox-Line Coilover Kit for BMW 4 Series F33 xDrive Convertible – Height Adjustable Stainless Steel – Fits 428i xDrive, 430i xDrive, 435i xDrive, 440i xDrive, 435d xDrive
KW Variant 1 (V1) Inox-Line Coilover Kit for BMW 4 Series F33 xDrive Convertible – Height Adjustable Stainless Steel – Fits 428i xDrive, 430i xDrive, 435i xDrive, 440i xDrive, 435d xDrive
KW Variant 1 (V1) Inox-Line Coilover Kit for BMW 4 Series F33 xDrive Convertible – Height Adjustable Stainless Steel – Fits 428i xDrive, 430i xDrive, 435i xDrive, 440i xDrive, 435d xDrive
  • Load image into Gallery viewer, KW Variant 1 (V1) Inox-Line Coilover Kit for BMW 4 Series F33 xDrive Convertible – Height Adjustable Stainless Steel – Fits 428i xDrive, 430i xDrive, 435i xDrive, 440i xDrive, 435d xDrive
  • Load image into Gallery viewer, KW Variant 1 (V1) Inox-Line Coilover Kit for BMW 4 Series F33 xDrive Convertible – Height Adjustable Stainless Steel – Fits 428i xDrive, 430i xDrive, 435i xDrive, 440i xDrive, 435d xDrive
  • Load image into Gallery viewer, KW Variant 1 (V1) Inox-Line Coilover Kit for BMW 4 Series F33 xDrive Convertible – Height Adjustable Stainless Steel – Fits 428i xDrive, 430i xDrive, 435i xDrive, 440i xDrive, 435d xDrive
  • Load image into Gallery viewer, KW Variant 1 (V1) Inox-Line Coilover Kit for BMW 4 Series F33 xDrive Convertible – Height Adjustable Stainless Steel – Fits 428i xDrive, 430i xDrive, 435i xDrive, 440i xDrive, 435d xDrive
  • Load image into Gallery viewer, KW Variant 1 (V1) Inox-Line Coilover Kit for BMW 4 Series F33 xDrive Convertible – Height Adjustable Stainless Steel – Fits 428i xDrive, 430i xDrive, 435i xDrive, 440i xDrive, 435d xDrive

KW Variant 1 (V1) Inox-Line Coilover Kit for BMW 4 Series F33 xDrive Convertible – Height Adjustable Stainless Steel – Fits 428i xDrive, 430i xDrive, 435i xDrive, 440i xDrive, 435d xDrive

£1,220.16
£1,220.16
£1,312.00
Sold out
Tax included. Shipping calculated at checkout.

KW Variant 1 Inox-Line Coilover Kit for BMW 4 Series F33 xDrive Convertible

Transform the way your BMW 4 Series F33 drives and looks with the KW Variant 1 Inox-Line coilover kit. This is the go-to BMW F33 coilover upgrade for xDrive models seeking a lower ride height, sharper handling and a premium, corrosion resistant finish. Perfect for daily driving and spirited road use, KW V1 delivers sporty, confidence inspiring handling with factory pre-configured fixed damping for a balanced ride. If you are looking for BMW F33 coilovers, BMW 4 Series coilovers, BMW 428i xDrive coilovers, BMW 430i xDrive coilovers, BMW 435i xDrive coilovers or BMW 440i xDrive coilovers, this KW coilover kit is the proven choice.

Why choose KW Variant 1 for your BMW F33 xDrive

  • Sporty handling with outstanding stance and ride height control
  • Pre-set fixed damping tuned by KW engineers for your specific vehicle
  • Stainless steel Inox-Line struts for long-term corrosion resistance
  • Individually height adjustable within the tested range
  • Dirt resistant trapezoid thread and composite collars for easy adjustments, even after years of use
  • Engineered and manufactured in Germany with rigorous quality control
  • Ready to install complete solution with comprehensive documentation

What you can expect

KW V1 is the benchmark entry into premium coilovers. The fixed, vehicle-specific damper setup and matched spring rates reduce body roll, improve turn in and deliver direct, predictable road feel while maintaining everyday comfort. Thanks to the Inox-Line stainless steel construction, springs and bump stops designed for longevity, plus high-quality components throughout, this BMW F33 suspension upgrade is built for years of reliable performance.

Height adjustment and usability

Achieve a clean, even drop and dial in your stance with continuous height adjustment within the tested range. The front axle uses a one-piece composite height adjuster. On rear setups with separate spring and damper, the supplied rear height adjuster sits either above or below the spring as required. Typical lowering ranges for KW Variant 1 are 30 to 70 mm or 50 to 90 mm depending on the vehicle model and axle load.

Real-world confidence

This is a popular upgrade among our BMW 4 Series owners. We rate KW V1 highly for its blend of comfort and control, and customers consistently praise the improved stance, reduced roll and precise feel on UK roads.

Key features at a glance

  • Version: Variant 1
  • Damping adjustment: No, factory pre-configured fixed damping
  • Material: Stainless steel Inox-Line
  • Approval: Part approval (§19.3)
  • Optimally pre-adjusted for your BMW 4 Series F33 xDrive
  • Sporty yet comfortable damping technology
  • Individually height adjustable within tested limits
  • High quality components for long durability
  • Complete documentation included

Compatibility

BMW 4 Series F33 Convertible (10/2013+)

  • 428ix
  • 430ix
  • 435ix
  • 440ix
  • 435dx

Keywords and search terms: BMW F33 coilover kit, BMW 4 Series convertible coilovers, BMW 4 Series F33 suspension upgrade, KW Variant 1 BMW, KW V1 coilovers BMW F33, KW Inox-Line coilovers, BMW xDrive coilovers, 428i xDrive coilovers, 430i xDrive coilovers, 435i xDrive coilovers, 440i xDrive coilovers, 435d xDrive coilovers, BMW F33 height adjustable suspension, stainless steel coilovers, fixed damping coilovers.

Documents and installation links

Professional fitting

We recommend professional installation for the best results. Nforcd offers expert fitting and alignment in Warwickshire. Request a tailored quote at Sales@nforcd.com.

Part number

102200BF

Warranty

  • Street Coilovers Variant 1, Variant 2, Variant 3, Street Comfort – Limited Lifetime Warranty
  • Bushings, bump stops and ball joints – 1 year
  • ClubSport, 2-way Race, 3-way Race Coilovers – No warranty

Why buy from Nforcd

We specialise in performance car parts for BMW. Fast shipping, knowledgeable support and fitting services available. If you are searching for BMW F33 coilovers, BMW 4 Series F33 xDrive suspension upgrade or KW Variant 1 Inox-Line for BMW, you are in the right place.