Q Power Quad 8in Underseat Front Fire Subwoofer Enclosure, Q-Bomb Ported Sub Box Compatible with Chevy Silverado Crew Cab, GMC Sierra Crew Cab 2007-2025

Great fit. Box fits 8s and the truck excellent. No need for seat lifters. Stick out just a tad in front . But not enough to be troublesome 👌

Sundown x8 v3 don't fit with out shaving box and removing rubbers on magnets. Ports also to small for these subs fuffs really bad on deep bass sounds. Overall box is definitely strong, looks great. Definitely recommend for smaller subs. Figured the port was to small for subs took a chance anyways. Fits great in 2019 chevy silverado crew

This Box is great installed a couple of ct audio meso subs and man does it sound good. Also it’s a very nice constructed box with that Bed-liner style finish. Well worth the money.

Have it in my 08 2500 hd sierra extended cab. Seat would need to be raised if you need to continue to use it.

Sounds good! Using this with 2 CT Sounds Meso 8’s feed by a 2000.1 amp. Fits nicely under the bench of my 2014 GMC Sierra crew cab.

Box does not fit under back seat of 2013 GMC Sierra 2500 crew cab like listing says, back seat does not go down all the way. The cut out for hump is not in correct location. Contacted seller so we will see how they handle the inconvenience of ordering wrong box due to incorrect item fitment.

I'm hoping the SKAR SDR-D8 will fit. The box came in 2 days after I ordered it. I was pleased at how fast. The box itself looks to be a good buy and is sturdy. It will be put to use soon. Toro R6 to push them 😈

This box could be good but it’s not. The holes for the speakers are slightly oversized. I had to perfectly place the speaker in the center and angle the screws to mount them. Also, they are not symmetrical. One side the speakers have about a 1/2”gap between them. The other side they were touching. So my grills won’t fit now without me doing some kind of grinding. Also there are these weird cutouts at the top that they cover with a thin piece of plywood. Just don’t cut it out and you won’t have to cover it. It’s dumb. I’m scared it’s going to sound crazy now because of that thinplywoodninatead of it being 3/4 mdf like the rest of the box. One last thing. This box will not slide under the seat of most trucks without major seat modifications. Don’t buy it if your not willing to either, pull Your seat or place it on top of your seat or just have it laying in the floor.

First and foremost it looks nice. That said and considering the price you get what you pay for everything about the construction of this box is off. The mdf is too thin for 4 8" subs and the port isn't correct for this size of air volume, other than that the box fits nicely in my 2015 chevy highcountry. But you might want to consider upgrading if your on a budget. I only bought this because it looked cool lol but your best bet is side port and two 8" subwoofers. For testing I put them in my jeep wrangler rubicon and they do pound hard but just use some gasket or silicone around the subs. Good luck with yours!

Very well built, fits perfect, finish is consistent, I have 2 skar zvx-8’s and it hits very, very low.