BMW Harman Kardon S0688 F Gen Speaker & Subwoofer Upgrade Package | HELIX Ci3 94247

Soundtech put this speaker and subwoofer upgrade package together for the BMW Harman Kardon S0688 F Gen with the Harman Kardon sound system. Every part is picked for this car, and the full parts list is below so you and your installer know exactly what turns up before any trim comes off.

What is in the package

• 1 x HELIX Ci5 S200FM-S2, 8" Subwoofer Pair, FlexMount, 2Ω
• 1 x HELIX FlexMount CFMK200 BMW.1S, 8" Polymer-Metal Subwoofer Adapter for BMW and Mini, Pair
• 3 x HELIX FlexMount CFMK20, 1" 3D Printed Speaker Adapter, Pair (version CFMK20 BMW.1, BMW, Mini)
• 2 x HELIX FlexMount CFMK100, 4" 3D Printed Speaker Adapter, Pair (version CFMK100 BMW.3, BMW, Mini)
• 1 x HELIX FlexMount CFMK100, 4" 3D Printed Speaker Adapter, Pair (version CFMK100 BMW.1, BMW, Mini, Tesla, Peugeot, Citroen, Seat Porsche, McLaren, Ferrari, Rolls Royce)
• 3 x HELIX CWK BMW.FX-550C, BMW OEM Speaker to FlexMount X-over, Wire Kit, 55cm
• 3 x HELIX Ci3 K100.2FM-S3 MK2, 4" 2 way Component Speaker Set, FlexMount, 3Ω

Parts list as set up on the Soundtech package listing, checked 9 November 2026.

Fitment

Soundtech does not list model years for this package. If you are not sure your car matches, send us the VIN or build date and we will check before you order.

Which BMW sound system do I have?

Soundtech groups its BMW packages by generation and factory sound system. This one is for F generation cars, which Soundtech puts at roughly 2005 to 2020.

Check your VIN build sheet for option code S0676 (HiFi speaker system) or S0688 (Harman Kardon surround sound). If neither code shows, it is usually the base stereo. Send us the VIN if you want us to check.

Installation and tuning

Soundtech lists its plug and play packages mainly for dealer and professional installation, although MATCH based packages can suit a confident DIY installer.

Warranty

Soundtech, the Australian distributor, gives its products a standard 12 month Australian warranty. That is on top of your rights under the Australian Consumer Law.

Frequently asked questions

Will this suit my car?

It is made for the BMW Harman Kardon S0688 F Gen with the Harman Kardon sound system. If you are not sure about your build or factory audio, send us the VIN and we will check.

What comes in the package?

1 x HELIX Ci5 S200FM-S2; 1 x HELIX FlexMount CFMK200 BMW.1S; 3 x HELIX FlexMount CFMK20; 2 x HELIX FlexMount CFMK100; 1 x HELIX FlexMount CFMK100; 3 x HELIX CWK BMW.FX-550C; 3 x HELIX Ci3 K100.2FM-S3 MK2. The full descriptions are in the parts list above.

What warranty does it have?

Soundtech gives a standard 12 month Australian warranty, on top of your rights under the Australian Consumer Law.