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- USA
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- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 10 - Jul 15
For Your Every Summer RSVP, with Code: SUMMER15
Description
Quad 8" Ported Underseat Frontfiring MDF Subwoofer Enclosure (w/ Durable Bed Liner Finish) for 2007+ GMC/Chevy Crew Cab TrucksQuad 4 Hole 8" Ported Subwoofer Enclosure Box for 2007 Current GMC Chevy Crew Cab Bedliner Finish Take your truck's audio system to the absolute extreme with this custom fit, quad 8 inch ported subwoofer enclosure, engineered specifically to fit perfectly under the rear seat of 2007 to current GMC Sierra and Chevy Silverado Crew Cab trucks. Designed for bass enthusiasts who refuse to compromise on output, this massive four hole enclosure maximizes
Quad 4-Hole 8" Ported Subwoofer Enclosure Box for 2007-Current GMC/Chevy Crew Cab – Bedliner FinishTake your truck's audio system to the absolute extreme with this custom-fit, quad 8-inch ported subwoofer enclosure, engineered specifically to fit perfectly under the rear seat of 2007 to current GMC Sierra and Chevy Silverado Crew Cab trucks. Designed for bass enthusiasts who refuse to compromise on output, this massive four-hole enclosure maximizes your available cabin space while delivering earth-shaking low end. Utilizing a highly efficient front-firing design and a precision-tuned slot port set at 35Hz, it ensures that your massive array of four 8-inch subwoofers delivers the absolute maximum punch and distortion-free volume possible from your truck's floorboard.
Built to withstand extreme acoustic pressure and the brutal physical demands of a high-output quad-subwoofer system, this enclosure is constructed from high-quality 5/8-inch Medium-Density Fiberboard (MDF) to eliminate power-robbing cabinet resonance. The exterior is completely coated in a heavy-duty, sprayed-on black bedliner finish, providing unmatched durability, moisture resistance, and a rugged aesthetic that seamlessly blends into your interior. Complete with premium spring-loaded push-pin terminals for a secure electrical connection, this box offers an incredible 11.25-inch mounting depth, easily accommodating heavy-duty, large-motor 8-inch subwoofers.
Key Features & Specifications
- Vehicle Fitment: Custom engineered to fit seamlessly under the rear seat of 2007-Current Chevy Silverado and GMC Sierra Crew Cab trucks
- Quad Subwoofer Fitment: Features four exact 8-inch cutouts to accommodate a massive quad 8" subwoofer array
- Enclosure Type: Ported / Vented design engineered for maximum SPL and deep, heavy bass output
- Tuning Frequency: Precision slot port tuned at 35 Hz for hard-hitting, distortion-free low end
- Air Space: 0.80 Cubic Feet of internal volume per subwoofer (3.20 cu. ft. total internal volume)
- Maximum Mounting Depth: 11.25 inches — offers massive clearance for heavy-duty, deep-motor subwoofers
- Premium Construction: Built from rigid 5/8-inch MDF (Medium-Density Fiberboard) to prevent rattling and structural flex under extreme pressure
- Heavy-Duty Finish: Fully coated in a rugged, sprayed-on black bedliner finish for extreme durability, anti-slip grip, and moisture protection
- Wiring Terminals: Equipped with high-quality spring-loaded push-pin terminals for a secure and reliable connection to your amplifier
- Firing Direction: Under-seat Front-Fire design maximizes acoustic transfer directly into the cabin
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.7 ★★★★★
Based on 1691 reviews
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Product Reviews
★★★★★ 5
Very Comfortable!
Size: Medium, Color: (601) Bittersweet Pink / Stone / Stone
Very comfortable. Don’t slip off back of heal. Love the colors.
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Reviewed in the United States on March 25, 2026
★★★★★ 5
😊
Size: Medium, Color: (601) Bittersweet Pink / Stone / Stone
These are really nice except I don’t like all the colors of them so I’m getting different ones same company just different colors. I don’t like the thick ones these are perfect.. 🤩
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Reviewed in the United States on February 24, 2026
★★★★★ 3
Pretty Colors to Encourage Me to Walk!
Size: X-Large, Color: (601) Bittersweet Pink / Stone / Stone
Hum. Extra large does not seem extra large. I have a slender but size 10-10.5 foot. Will keep but was hoping for a looser fit. Bought to match an Under Armour walking outfit.
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Reviewed in the United States on May 16, 2026
★★★★★ 5
Socks
Size: X-Large, Color: (601) Bittersweet Pink / Stone / Stone
So cute
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Reviewed in the United States on March 6, 2026
★★★★★ 5
Deliciously Healthy Snack – Chomps Beef Sticks Are a Must-Try
Flavor Name: Original Beef
I recently had the pleasure of trying Chomps Beef Sticks, and I must say, they have quickly become my go-to snack for a variety of reasons.
**Taste and Texture:**
The taste of Chomps Beef Sticks is simply outstanding. Each bite is packed with a robust, savory flavor that perfectly balances the natural taste of high-quality beef with a blend of spices. The texture is just right – firm yet tender, making it easy to chew without feeling overly processed or tough. Whether you prefer the original flavor or the slightly spicier varieties, there’s a Chomps Beef Stick for every palate.
**Ingredients and Nutrition:**
What truly sets Chomps apart is their commitment to quality ingredients. These beef sticks are made from 100% grass-fed and finished beef, free from hormones, antibiotics, and artificial preservatives. As someone who is health-conscious, I appreciate that Chomps uses only natural ingredients, ensuring each stick is both nutritious and delicious. Each beef stick is high in protein, making it an excellent choice for a post-workout snack or a midday protein boost. Plus, they are Whole30 Approved, Keto Certified, and Paleo friendly, fitting perfectly into a variety of dietary plans.
**Convenience:**
Chomps Beef Sticks are incredibly convenient for on-the-go snacking. Their compact size makes them easy to toss into a gym bag, backpack, or purse. I’ve found them to be a perfect snack for hiking, traveling, or just keeping at my desk for a quick, healthy bite during busy workdays.
**Sustainability:**
Another aspect worth mentioning is Chomps’ dedication to sustainability. By sourcing grass-fed beef and adhering to humane farming practices, they ensure that their products are not only good for you but also better for the environment. This commitment adds an extra layer of satisfaction when enjoying their products.
**Overall Experience:**
Overall, Chomps Beef Sticks are a standout snack that combines taste, nutrition, and convenience in one package. Whether you’re a fitness enthusiast, a busy professional, or just someone who loves a tasty and healthy snack, Chomps Beef Sticks are worth trying. I highly recommend giving them a try – you won’t be disappointed!
**Rating: 5/5**
Chomps Beef Sticks have earned a permanent spot in my snack rotation, and I’m sure they will in yours too. Happy snacking!
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Reviewed in the United States on June 9, 2024
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