BMW 3/4 Series Double DIN car stereo upgrade fitting kit (MOST AMPLIFIED MODELS)

Complete stereo upgrade kit to install a Double DIN aftermarket car stereo head unit and retain the use of the steering wheel audio controls in BMW 3-Series (F30, F31, F34) and 4-Series (F32, F33, F36) car models (WITH MOST-AMPLIFIED SYSTEMS)

This kit also retains the OEM factory climate controls, as well as the vehicle settings via the top display. This fitting kit will also retain the factory warning chimes/ parking sensor audio (Via the integrated speaker)

This kit will retain the OEM MOST fiber optic network usually found in amplified BMW sound systems such as Harman Kardon, this can easily be identifed by the Harman Kardon Logo being present on the door speakers (Tweeters)

This kit is the equivalent of Connects2 part: CTKBM31

• Allows for the installation of a Double DIN aftermarket stereo
• Retains OEM climate controls
• Retains OEM MOST amplified system
• Retains steering wheel control functionality
• Retains phone button functionality
• Retains warning chimes/parking sensor audio (via integrated speaker)
• Retains voice commands via SWC (if aftermarket head unit supports)
• Retains vehicle settings (via retained top display)
• Provides output feeds for Park Brake, Speed Pulse, Reverse Gear and Mute
• Retains ambient ashtray light
• Updateable via USB
• Kit includes universal patch lead and antenna adapter

PLEASE NOTE: ONLY SUITABLE FOR MODELS WITH THE MOST AMPLIFIED SOUNDS SYSTEMS, FOR NON-AMPLIFIED SOUND SYSTEMS PLEASE USE FK-556

3-Series (F30) and 4-Series (F32) Sound Systems

The speaker systems in the F30 and F32 models are available in 3 different specification levels:

Base/ Basic Audio

This is the lowest-level BMW sound system, unavailable in the US and Canada. It consists of 6 speakers (4x Midrange, 2x Underseat Subwoofers) which are powered by the iDrive head unit with no additional BMW amplifier.

HiFi Sound Systems

This is an option one level above the Base system. This consists of 9 speakers and a seven-channel amplifier integrated into the loudspeaker system. The amplifier has no MOST bus connection and instead receives the switch-on signal via a separate line. Seperate speakers are installed in the HiFi system for the treble and mid-tone ranges. The HiFi system also has a mid-range speaker positioned as a centre speaker.

Top HiFi (Harman Kardon) and 'MOST' Sound Systems

This is the top tier BMW sound system. It consists of 16 speakers in total, with a 9-channel amplifier incorporated into the Sound system. The AMP is a bus connection in Media Orientated System Transport (MOST)

Speaker panels labelled with the 'Harman Kardon' lettering, a tale-tale sign of a Top HiFi (MOST) system

This product has been developed through carefully documented data and research. The manufacturer & supplier cannot be held responsible for discrepancies/inconsistencies that may occur due to vehicle manufacturing changes or options, or damage that may occur in the vehicle during the installation of components. All application data is subject to change.

Refer to the compatibility section to check your vehicle variant is supported.