KW DDC - ECU coilovers inox - BMW 1 Series E81 / E87

KW DDC ECU Coilovers – BMW 1 Series E81 / E87

Upgrade your BMW 1 Series E81 or E87 with KW DDC ECU Coilovers, combining electronically adjustable damping with height-adjustable INOX-LINE stainless-steel coilovers.

The KW DDC ECU system allows the suspension character to be changed electronically rather than manually adjusting each damper, making it particularly well suited to drivers who want a high level of suspension control without sacrificing day-to-day usability.

KW part number:

39020001

Electronic Damping Adjustment

The key feature of the KW DDC ECU system is electronically controlled damping.

The system provides selectable suspension settings through the supplied control system, allowing the car to switch between softer and firmer damping characteristics at the touch of a button. Current listings commonly describe Comfort, Sport and Sport+ style settings depending on the control configuration.

This allows the suspension setup to be adapted for:

• Daily road driving
• Fast-road use
• Motorway journeys
• More demanding performance driving
• Driver preference

Adjustable Ride Height

For BMW E81 and E87 applications, KW lists an approximate lowering range of:

• Front: 35–65mm
• Rear: 35–65mm

The front axle uses threaded coilover struts, while the rear uses separate height-adjustable springs and dampers.

This gives greater control over:

• Vehicle stance
• Wheel and tyre fitment
• Centre of gravity
• Arch clearance
• Overall chassis setup

The suspension should always be adjusted within the approved range while retaining suitable suspension travel and tyre clearance.

KW INOX-LINE Stainless Steel

The DDC ECU system uses KW’s corrosion-resistant INOX-LINE stainless-steel construction.

Key features include:

• Stainless-steel damper bodies
• Height-adjustable suspension
• Electronic damping control
• Vehicle-specific spring and damper calibration
• TÜV-approved application
• Separate ECU/control system included

The stainless-steel construction is designed to provide strong corrosion resistance and help preserve the functionality of the threaded height-adjustment system over long-term road use.

Compatibility – Please Check Carefully

KW part number 39020001 is specifically listed for BMW 1 Series E81 and E87 applications.

Compatible chassis:

• BMW 1 Series E81 Hatch
• BMW 1 Series E87 Hatch

Published fitment data covers a broad range of petrol and diesel E81/E87 models, including engine outputs from approximately 66kW to 195kW depending on production date and exact variant.

Maximum Axle Loads

For this application, KW lists maximum permissible axle loads of:

• Front axle: 920kg
• Rear axle: 1060kg

These limits should be checked against the vehicle identification plate before ordering.

Important E82 Compatibility Note

Part number 39020001 should not be listed as the E82 Coupe kit.

KW separates the E8x DDC ECU applications as follows:

• 39020001 – BMW E81 / E87
• 39020002 – BMW E82 / E88 Coupe application
• 39020003 – BMW E88 Convertible application
• 39020004 – BMW E82 1M Coupe

This means an E82 owner should not order 39020001 purely because the suspension platform appears similar.

DDC ECU vs Conventional KW Coilovers

Unlike a standard KW V1, V2 or V3 setup, the DDC ECU uses electronic damping control.

KW DDC ECU:

• Adjustable ride height
• Electronic damping adjustment
• ECU-controlled suspension
• INOX-LINE stainless-steel construction
• Driver-selectable suspension character

KW V1:

• Adjustable ride height
• Fixed damping

KW V2:

• Adjustable ride height
• Manual rebound adjustment

KW V3:

• Adjustable ride height
• Manual rebound and compression adjustment

The DDC ECU is therefore particularly useful for drivers who want to change suspension behaviour electronically rather than manually adjusting individual dampers.

Supplied Control System

KW lists the kit as including:

• Front height-adjustable coilover struts
• Rear springs with height adjustment
• Rear dampers
• Electronic control unit

The exact supplied controls and wiring should be confirmed from the current kit specification before ordering.

Optional App Control

Some KW DDC ECU configurations can be paired with an optional WLAN module, allowing damping characteristics to be adjusted through a compatible smartphone application.

If app-based control is specifically required, please contact The Rosso Corsa Collective before ordering so compatibility and the required additional hardware can be confirmed.

Designed for Road & Performance Use

The KW DDC ECU system is particularly well suited to:

• Daily-driven performance cars
• Fast-road builds
• Long-distance road use
• Drivers wanting electronically selectable damping
• Cars that need both comfort and performance settings
• Owners wanting premium suspension without manual damper adjustment

Product Image & Configuration Note

Product images are generic and are intended for illustration purposes only.

The exact components supplied can vary depending on vehicle application, including:

• Spring configuration
• Damper layout
• Electronic control hardware
• Wiring
• Rear height-adjustment components
• Mounting hardware

If you have specific requirements or want confirmation of the exact kit configuration, please contact The Rosso Corsa Collective before ordering.

Professional Installation Recommended

Professional installation is strongly recommended due to both the mechanical suspension installation and electronic control system.

Following installation, the vehicle should receive a full wheel alignment and geometry setup.

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