KW Variant 1 (V1) Inox-Line Coilovers Suspension Lowering Kit for BMW Z4 G29 (M40i, 20i) & Toyota GR Supra A90 MK5 - Height Adjustable Stainless Steel Shocks Struts - Fast Road Street Coil Over Set - 102200CG

Premium Stainless Adjustable Suspension for BMW Z4 G29 and Toyota GR Supra A90

Take your chassis to the next level with the KW Variant 1 stainless steel coilover set. This is a true road-focused performance upgrade that delivers precise steering feel, a controlled ride, and a purposeful drop without the compromise. Built in Germany with corrosion resistant construction and pre-set damping, it is the fit-and-forget choice for drivers who want confident handling on British B-roads, relaxed motorway manners, and a stance that looks right every time.

Engineered specifically for BMW Z4 G29 Roadster M40i and 20i, as well as Toyota GR Supra A90 MK5, the KW V1 package gives you adjustable ride height, matched spring and damper rates, and long-term durability thanks to stainless bodies and composite perches. It is the ideal daily-driver friendly upgrade that still feels superb on a spirited blast or a casual track evening.

Why this kit stands out

• Pre-tuned damping for sporty control with genuine everyday comfort
• Height adjustment within the approved TÜV range for the perfect stance and tyre-to-arch fitment
• Stainless steel strut housings that resist salt and grime through UK winters
• Vehicle specific spring rates and damper curves for balance, stability and grip
• Sharper turn in, reduced body movement and improved high speed composure
• Composite spring seats with dirt resistant threads for easy adjustments over time
• Complete, ready to install kit with comprehensive documentation

Lowering range

Continuous, TÜV tested height adjustment within the certified window, model dependent. Set your ride height precisely front and rear using the supplied adjusters for a clean, even drop that works on UK roads.

Real feedback from real cars

We have fitted this suspension to customer BMW Z4 G29 and GR Supra A90 builds and the feedback has been consistently excellent. Owners report a planted feel over rough surfaces, calmer body control, and a confident, connected drive with zero drama in poor weather.

What is included

• KW Variant 1 stainless coilovers, front and rear
• Rear ride height adjuster system where required
• Chassis specific springs with matched dampers
• Installation instructions and approval documents

Specification

• Version: Variant 1
• Damping: Fixed, factory pre-configured
• Body: Stainless steel, corrosion resistant
• Approval: Parts approval (§19.3)
• Use case: Fast road, daily driven comfort

Compatibility

• BMW Z4 G29 Roadster M40i and 20i, 11/2018 onward
• Toyota GR Supra A90 MK5, 03/2019 onward

Downloads

• Parts approval document (§19.3)

Warranty

• Street coilovers including Variant 1, Variant 2, Variant 3, Street Comfort, limited lifetime warranty
• Bushes, bump stops and ball joints, 1 year
• Clubsport, 2-way Race, 3-way Race, no warranty

Part number

KW 102200CG

Professional fitting

For installation and geometry setup, book with MJ Modifications in Warwickshire. We offer expert fitting, four wheel alignment and post-install ride height adjustment for a perfect finish. Request a quote at info@mjmodifications.co.uk.

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