QPower Quad 8in Underseat Front Fire Subwoofer Enclosure, Q-Bomb Ported Sub Box Compatible with Chevy Silverado Crew Cab, GMC Sierra Crew Cab 2007-2026

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 👌

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

No other box would make my Chevy Silverado pound like this one.It's absolutely everything that I wanted

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 😈

I have a 2011 Chevy crew cab and it fits prefect. But u do need a 2.5 seat lift

Poorly built has gaps with open holes in the design double baffle in the front, which is surprising, it’s in the bed liner so it has that going for it

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.

So 4 stars ? For me i almost want to put 5 stars. But ive installed 30 + systems as a pure amatuer so i have reasonable expectations understanding each actual subwoofer needs specific airspace and port dimensions I do not want to scratch build a box this time so this is a cheap start. Im using the skar svr-8 and this box is close with some mods. One mod is the port depth on box is only 6.5” and the svr-8 needs by the manufactures specs 25.75” long port at a specifies narrow slot port. Im redoing the calculations for a more squared rectangle shared by all subs and ill reqork the port if needed Also im using a long strand shredded fiberglass body filler after sanding the seams to strengthen and seal. There is other ways to do this. And the wire connections are weak and held in by tiny screws and im replacing with steve meade wire connectors Basically either use it as is for a cheap option if you can not modify to your box Or have a custom made box Some have rated this fine as is but the 1 stars i dont think is fair. I Look at the price of products and adjust my expectations

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!