6.5" Foam Speaker Enhancer, AngleKai 4Pcs Self Adhesive Speaker Fast Rings, Universal High Rebound Sponge Bass Blocker Kit for Car Door Speaker Foam Rings

I combined these with Amazon-brand sound deadening and it worked wonders for the rattling and sound projection issues I was having on my most recent sound system install. Worth the money.

Save your money and buy these. They are a very nice dense and soft foam, it works very well and super sticky in a good way. Skip the high-dollar versions and get these, you'll be happy with them.

Nice strong foamand it is very sticky to good quality.

Since I had to replace the speaker mounts I installed these. Noticeable difference in sound directed into the can of the truck vs the dead air space in the door panel

I have a jeep so my speakers are in the front not on the doors, I put in aftermarket speakers and they rattled when they got loud just because they weren’t a perfect fit, I put these in and it stopped the rattle and made the sound quality 1000x better. Highly recommend. Easy to install as long as you know how to take smart speakers in your own car. It sticks very well. They are amazing

Pretty decent quality product I found the outer rings only work on two of the four doors on my 4Runner. The rings are pretty thick but they do compress easily. Just make sure you’re going to able to fit them. Most factory inside panels have a plastic ring that sticks out already so your available space may vary. I definitely used the inner circle on all the doors behind the speakers. Overall pretty good product for the cost.

They work well. You might need to put a little extra glue on the backside of speaker as Aftermarket speakers, like I put in my car, put their stickers on the back side of the speaker. So not the fault of this product. Just be mindful to start with a clean face (sticker free) where these will be placed. have a few extra pieces of double sided tape JIC you put it over the stickers

When you tap on these doors with your fingers, you will only hear a faint thud.I used NVX XBAF69 on the front doors and NVX XBAF65 on the rear doors and I used this AngleKai 4Pcs Self Adhesive Speaker Fast Rings for additional sound deadening throughout the inner door panels. This foam seems to be the same sound deadening material that Toyota uses in various places in the new Tacoma and other vehicles. These Fast Rings are some seriously dense but light weight material.I tapped my fingers around the outer door panel and placed the center piece where I found the loudest sound. I then cut the rings into three pieces and repeated the the hunt for vibrations. It doesn't take much to make a big difference. I could not find anywhere in the door panel where the foam comes close to interfering with the window operation except for the window tracks:-DMy truck now sounds Infinity Reference better with only the wanted sounds from the sound system.