Will the KW DDC coilover kit fit my G29 BMW Z4 and A9x Toyota GR Supra?

Yes, for electronic-damper cars. This KW DDC Plug & Play coilover kit (part 39020045) fits the G29 BMW Z4 sDrive30i and M40i and the A9x Toyota GR Supra equipped with electronic dampers, plugging into the factory wiring.

KW DDC (Dynamic Damping Control) is an electronically adjustable coilover system. The damping adjusts electronically on the fly while ride height is set mechanically, bringing KW coilover engineering to cars that want electronic damping control.

Is this the Plug & Play or ECU version?

This is the KW DDC Plug & Play version, which connects to the car's factory electronic damper wiring and is controlled through the factory drive-mode selector or the KW DDC app.

Is ride height adjustable on the KW DDC coilover kit?

Yes. While damping is electronic, the KW DDC coilover kit is still mechanically height-adjustable via KW's trapezoidal thread, so you set static ride height and corner balance within KW's tested range.

Is this a complete coilover kit?

Yes. The KW DDC coilover kit is a complete four-corner system for the G29 BMW Z4 and A9x Toyota GR Supra, including the electronic dampers, springs, and the control hardware needed for Dynamic Damping Control.

Where is the KW DDC made?

The KW DDC coilover kit is developed and manufactured by KW automotive in Germany and backed by a Limited Lifetime Warranty.

KW DDC Coilover Kit G29 Z4 / A9x Supra

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Description

KW DDC Coilover Kit (Plug & Play) for G29 BMW Z4 and A9x Toyota GR Supra with Electronic Dampers [39020045]

The KW DDC Plug & Play Coilover Kit offers a seamless suspension upgrade for the G29 BMW Z4 sDrive 30i and M40i, as well as the A90 / A91 Toyota GR Supra, specifically for vehicles equipped with factory electronic dampers. This system integrates directly with the OEM electronic damping controls, allowing drivers to retain full use of factory drive mode selections while benefiting from KW’s precision-engineered coilover technology. Designed for enhanced performance and comfort, the kit provides adjustable ride height and improved handling dynamics without triggering error codes or requiring additional modifications. Ideal for enthusiasts seeking a refined, plug-and-play suspension solution that delivers both everyday usability and spirited driving performance.

DDC – Dynamic Damping Control

KW DDC coilovers are part of the KW iSuspension program — KW’s intelligent suspension solution that merges the benefits of adaptive damping technology with vehicle-specific aftermarket performance upgrades. Two system variants are available; the KW DDC ECU, which includes the option of App-based control, and the KW DDC Plug & Play, developed for select models equipped with factory electronic dampers.

KW DDC Plug & Play

With the KW DDC Plug & Play system, installation is seamless — only the factory adaptive suspension is replaced, with no need to modify stock wiring or perform additional conversions. The KW DDC Plug & Play coilovers connect directly to the vehicle’s original plugs, enabling continued use of existing interior suspension controls to toggle between damping modes.
As more premium vehicles come equipped with adaptive electronic suspension, KW DDC Plug & Play offers a solution that eliminates the compromises previously associated with aftermarket suspension upgrades. Unlike traditional systems that require sacrificing electronic adjustability, KW’s adaptive coilover suspension retains all factory functions while adding precise ride height adjustability and KW-engineered driving dynamics.
Installation involves replacing the factory electronic struts with KW’s Inox-Line stainless steel coilover struts. The adaptive KW dampers integrate with the OEM electronics through the vehicle’s original connectors. No additional modifications are necessary — the existing damping control button continues to operate the new KW DDC Plug & Play system.
This setup combines the performance and ride quality of KW coilovers with full compatibility with factory electronic damping controls. At the push of a button, the driver can select Comfort, Normal, or Sport modes — each tuned specifically for the KW coilover system. The ride height is individually adjustable within KW’s tested range, and the system is recognized by the vehicle’s on-board electronics, ensuring all original displays and controls remain fully functional.
- Composite Spring Seat: KW’s spring perches are engineered from a friction-optimized, wear-resistant polyamide composite material reinforced with a stainless steel insert. Unlike anodized aluminum seats, this construction resists oxidation and provides long-term strength and durability. In combination with KW’s Inox-Line stainless steel struts, this ensures lasting ride height adjustability.
- Trapezoidal Thread: KW also uses a trapezoidal thread design that is less sensitive to dirt and easier to adjust compared to conventional threads. The larger cross-section of the thread increases load-bearing capacity and enhances long-term functionality.
- INOX-LINE: Manufactured from high-grade, rust-proof stainless steel, KW’s INOX-LINE coilover struts are 100% corrosion resistant and maintain full adjustability throughout their lifespan. The non-wearing finish guarantees that performance and usability remain consistent over time.
- KW 7-Post Driving Dynamics Test: KW’s in-house 7-post drive dynamics test rig — used by global automakers and professional race teams — enables precise tuning of each coilover system. Combined with real-world testing on public roads and racetracks, this ensures that every KW product delivers the responsive and balanced handling characteristic of the KW driving experience.
- Technical Component Report: Each KW DDC Plug & Play kit includes a detailed technical component report. This document provides approved lowering specifications, fitment guidelines, and vehicle classification to ensure compliance with road regulations. It also facilitates inspection and documentation for road legality in regions where such approval is required.

Features

Part of KW’s iSuspension program (intelligent adaptive suspension)
Plug & Play installation with direct connection to OEM electronic damping system
Retains full functionality of factory drive mode selector (comfort, normal, sport)
No wiring modifications or additional conversion steps required
Individually adjustable ride height within TÜV-tested adjustment range
Compatible with factory on-board electronics & dashboard displays
INOX-LINE stainless steel coilover struts
Polyamide composite spring perches with stainless steel inserts
Friction-optimized trapezoidal thread for easier adjustment & higher load capacity
Maintains original comfort features while improving handling dynamics
Developed & tested using KW’s 7-post drive dynamics test rig
Includes detailed technical component report
Seamless integration without error codes or system conflicts
Backed by KW’s motorsport-derived engineering & manufacturing quality

Applications

BMW Z4 M40i: G29 (2020-present)
BMW Z4 sDrive 30i: G29 (2019-present)
Toyota GR Supra: A90, A91 (2020-present)

Notes

Some images are used for generic purposes, actual product may vary
Designed specifically for vehicles with factory electronic dampers

Frequently Asked Questions

Will the KW DDC coilover kit fit my G29 BMW Z4 and A9x Toyota GR Supra? Yes, for electronic-damper cars. This KW DDC Plug & Play coilover kit (part 39020045) fits the G29 BMW Z4 sDrive30i and M40i and the A9x Toyota GR Supra equipped with electronic dampers, plugging into the factory wiring.
What is KW DDC? KW DDC (Dynamic Damping Control) is an electronically adjustable coilover system. The damping adjusts electronically on the fly while ride height is set mechanically, bringing KW coilover engineering to cars that want electronic damping control.
Is this the Plug & Play or ECU version? This is the KW DDC Plug & Play version, which connects to the car’s factory electronic damper wiring and is controlled through the factory drive-mode selector or the KW DDC app.
Is ride height adjustable on the KW DDC coilover kit? Yes. While damping is electronic, the KW DDC coilover kit is still mechanically height-adjustable via KW’s trapezoidal thread, so you set static ride height and corner balance within KW’s tested range.
Is this a complete coilover kit? Yes. The KW DDC coilover kit is a complete four-corner system for the G29 BMW Z4 and A9x Toyota GR Supra, including the electronic dampers, springs, and the control hardware needed for Dynamic Damping Control.
Where is the KW DDC made? The KW DDC coilover kit is developed and manufactured by KW automotive in Germany and backed by a Limited Lifetime Warranty.

About KW Automotive

KW Automotive is a leading manufacturer of premium suspension systems, known for its innovative engineering, precision manufacturing, and motorsport-proven performance. Founded in Germany, KW has earned global recognition for its wide range of coilover kits, electronic damping systems, and adaptive suspension solutions designed for both street and track applications. With in-house development, extensive testing — including use of a proprietary 7-post drive dynamics test rig — and partnerships with top automotive brands and racing teams, KW delivers products that combine advanced technology with everyday usability. KW’s commitment to quality, customization, and driving dynamics has made it a trusted name among enthusiasts, tuners, and professional racers worldwide.

Additional Information

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BP Pricing Difference

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