BMW F31 Custom Sub Box. Really stretch the limits in the design. : r/CarAV
![BMW F31 Custom Sub Box. Really stretch the limits in the design. : r/CarAV](https://external-preview.redd.it/DHQLMBrA4XCgB86VgtUbp-wr_Hf1r2AG571mhWWL6lA.jpg?auto=webp&s=eddcf4c96c9d4990728b1abdbc1ef6f98cdb01e3)
F31 Underseat Sub upgrade - BMW 3-Series and 4-Series Forum (F30
![](https://preview.redd.it/custom-ported-subwoofer-enclosure-questions-v0-dmqppt0wnm1b1.png?width=509&format=png&auto=webp&s=e157eda66740bf52a477345f13f7ba4583102d59)
custom ported subwoofer enclosure questions : r/CarAV
Custom Fit Subwoofer-Box Leergehäuse für BMW 3er F31 Touring. Passend fürBMW 3 (F31) Touring. Modèle BMW 3 (F31) Touring. Place of installation BMW 3
![](https://i.ebayimg.com/images/g/cMgAAOSwMRpj0908/s-l1200.webp)
Custom Fit subwoofer enclosure for BMW 3 F31 Touring
![](https://preview.redd.it/adi71stijii31.jpg?width=1080&crop=smart&auto=webp&s=1ca96be7eab3e8bb375d26530f2607652351019d)
Custom subwoofers for my 3 series trunk : r/BMW
![](https://preview.redd.it/zcktu8pvza081.jpg?width=640&crop=smart&auto=webp&s=b7807a58032659366c466720dd2f5fff30126d49)
Been a while since I've posted an update on the f31 but a lot has
![](https://images.crutchfieldonline.com/ImageHandler/trim/750/457/products/20081/136/x13694283-o_instal.jpeg)
JL Audio Stealthbox® Custom-fit fiberglass enclosure with two 13
![](https://musicarcertified.com/wp-content/uploads/2016/10/IMG_1318.jpg)
F30/F80 OE-Look Subwoofer Enclosure – Musicar Certified Sound
![](http://farm4.static.flickr.com/3504/3972485343_2a9d76ab78_b.jpg)
REVIEW: TPLSM3 Custom Fiberglass Subwoofer Enclosure - BMW 1
![](https://image.isu.pub/240202072613-42aabf9c58f48dd3bba3fb906762b66b/jpg/page_1.jpg)
Campaign Middle East - February 2024 by Motivate Media Group - Issuu
![](https://assets.turnermotorsport.com/product_library_tms/1862688_x300.jpg)
BMW Interior Parts for BMW 2 Series F22 (2014+)
Pictures of slavery and anti-slavery
![](https://live.staticflickr.com/65535/50922825542_3735a4891c_z.jpg)
Bimmerforums - The Ultimate BMW Forum