Focal Inside BMW 2.1 IMP Speaker Harness for Impulse 4.320 4 Channel Amplifier - CEN
Focal Inside BMW 2.1 IMP Speaker Harness for Impulse 4.320 4 Channel Amplifier - CEN
Focal Inside BMW 2.1 IMP Speaker Harness for Impulse 4.320 4 Channel Amplifier - CEN
Focal Inside BMW 2.1 IMP Speaker Harness for Impulse 4.320 4 Channel Amplifier - CEN
Focal Inside BMW 2.1 IMP Speaker Harness for Impulse 4.320 4 Channel Amplifier - CEN
Focal Inside BMW 2.1 IMP Speaker Harness for Impulse 4.320 4 Channel Amplifier - CEN
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Focal Inside BMW 2.1 IMP Speaker Harness for Impulse 4.320 4 Channel Amplifier

£79.99 Best Seller
Low stock
SKU: 90502MPN: IW-BMW-IMP2.1

Focal Inside 2.1 IMP Harness

A plug-and-play wiring harness that connects BMW speaker drivers directly to the Focal Impulse 4.320 4-channel digital amplifier, using vehicle-specific connectors for a clean, straightforward install.

BMW/IMPULSE 4.320 HARNESS

This cable uses two channels of the Impulse 4.320 to amplify the vehicle's front speakers, and the remaining two channels to drive two BMW subwoofers.

Inside upgrade harness

  • Designed for use with the Focal Impulse 4.320 compact 4-channel digital amplifier
  • Compatible with BMW speaker drivers and BMW subwoofers
  • Vehicle-specific BMW connectors for simple, secure installation
  • Enables 2.1 channel amplification within a BMW using existing speaker locations
  • Check vehicle compatibility before purchasing — contact us or visit the Focal Inside website

Explore the full range in Focal Inside.

Specification
Length13ft (4m)
More specs
  • Developed with twisted cables to eliminate disturbance
  • Compatible with the IMPULSE 4.320 amplifier
  • Specific BMW connectors for a quick and flawless connection 
  • No soldering required
  • BMW 2009 >
  • Impulse 4.320
What's Included
  • Focal BMW 2.1 IMP Harness
Pro InstallationProduct Help

Focal

About the Focal IW-BMW-IMP2.1

From our tech experts at CEN

A Focal Inside wiring harness for the BMW, connecting a direct-fit system to the vehicle’s own wiring without cutting into the factory loom.

Who it suits

BMW owners fitting a Focal Inside system who want the work reversible and the car returnable to standard.

Our tech experts advise

Harnesses are specific to vehicle, year and which factory audio system the car was built with, and the wrong one simply will not work. We confirm against your exact vehicle before ordering — get in touch. See car audio installation.

Explore the full Focal range at CEN, with fast UK dispatch and expert advice from our Nottingham team. Shop all Focal

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focal inside accessories

Plug & Play Kits

Configure the solution best suited to your needs in just a few clicks.

View Compatibility List

Focal Inside Series

The Focal Inside offer is aimed at all drivers wishing to replace their car's original system with a hi-fi quality Plug & Play solution that integrates easily, without modifying the interior. Different configurations are available by brand (over 50 brands), by car model (1000 vehicle models).

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