All Fiberglass body - do not mistake them for thin plastic. Fibrerglass GRP (glass reinforced plastic) is much stronger its purpose is to be thin, strong, light weight. An average size man can stand on these - they have no issue mounting any speaker than can fit in them.
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2pcs 4X6 Inch 150W Car Speaker Automobile Car HiFi Audio Full Range Frequency Coaxial Speaker Auto High Pitch Loud Speaker
Aliexpress UK
If not it will be done at a general size and may need modification. All Fiberglass body / lightweight strong. Can be screwed in each corner to secure/fix. can request uncarpeted left in black gel coat to finish as you want.
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HT25 Loudspeaker Car Audio Tweeter Speakers Car Loud Dome Tweeter For Car High Tweeter Mini Speakers Silk Film Auto Speaker 2pcs
Aliexpress UK
3D Printed Custom Speaker Pod. Speaker Mount hole is 5mm solid thick to allow for screws. Remaining pod is plastic grid infilled with 1.6mm thick side walls. Angled at 45 degrees to create more improved sound.
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GT650 Hifi Car Coaxial Speaker 6.5-inch Luxury Car Top Quality Bidirectional Car Speaker Full Range Car Music Stereo Audio
Aliexpress UK
3D Printed Custom Speaker Pod BLACK. Angled at 45 degrees to create more improved sound. Takes a 5" Speaker (Not Supplied). Note Pods are printed in BLACK.
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2 Way Car Audio Speaker 12v Max 120W Car Component Speaker 6.5 Inch Sound System Car Door Speaker Set
Aliexpress UK
The Pioneer speakers combine stunning design and performance which sets a new edge against the competition. Pioneer TS-44 Specifications For car audio enthusiasts, Car Audio Warehouse is the place to be.
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Car Tweeter Car Speaker Universal High Efficiency Speaker Super Loudspeaker Sound Car Tweeter Kit
Aliexpress UK
Coaxial Speakers. TS-44 Speakers. Full Range Surface Mount. Good price, good service. Superb Service. This item is exactly what I was after at a brilliant price. s n (1267). Than a Decade.
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GP650 high-quality 6.5-inch car speaker 180W HIFI car audio set stereo high pitched speaker mid bass speaker car subwoofer
Aliexpress UK
A: You can certainly use your factory grilles with your new speakers. Pioneer TS-G1720F Car speakers - 6.5" ( 17cm ) Coaxial Speakers 300W. Nissan Juke: 2010 - 2018. Along with the Pioneer speakers you will also receive the needed speaker adapter pods for your car, so that the speakers can be fitted to the door.
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3.5-inch car mounted same point sound source mid-range speaker, car center speaker, tweeter, car mounted coaxial speaker
Aliexpress UK
Vauxhall Astra H: 2005 - 2010. A: You can certainly use your factory grilles with your new speakers. Pioneer TS-G1720F Car speakers - 6.5" ( 17cm ) Coaxial Speakers 300W. Along with the Pioneer speakers you will also receive the needed speaker adapter pods for your car, so that the speakers can be fitted to the door.
eBay
2pcs 4 inch 60W 88dB 2-Way Full Range Frequency Car Audio Stereo Coaxial Speaker Car Speaker Automobile Loudspeaker
Aliexpress UK