Upgrading the audio in a single cab truck presents unique challenges due to limited space behind or under the seats. We researched and compared dozens of sub boxes designed specifically for single cab trucks, evaluating manufacturer specifications, published industry standards for materials and construction, and aggregated owner feedback from verified purchasers. Our goal is to help you find a sub box that delivers solid bass without sacrificing precious cabin space.
| Photo | Product | Score | Buy |
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Atrend Bbox Single Cab Truck Sub Box Best Overall Fits 1999-2018 Ford F-150, 12" sub, 0.9 cu ft per chamber |
9 | 🛒 Check Price |
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QPower Single Cab Truck Sub Box Best Value Fits 1999-2007 Chevy Silverado/GMC Sierra, 10" sub, 0.8 cu ft |
8.7 | 🛒 Check Price |
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Supercrews Sound Single Cab Sub Box Premium Pick Fits 2015-2020 Ford F-150, dual 10" subs, 1.0 cu ft per side |
9.2 | 🛒 Check Price |
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MTX Terminator Single Cab Sub Box Best for Bass Fits 1999-2013 Ford F-150, 12" sub, ported design, 1.2 cu ft |
8.4 | 🛒 Check Price |
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Bassworx Single Cab Truck Sub Box Budget Friendly Fits 1994-2004 Dodge Ram, 10" sub, 0.75 cu ft sealed |
7.8 | 🛒 Check Price |
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JL Audio Stealthbox for Single Cab Trucks Best Fitment Fits 2007-2018 Toyota Tundra, 10" sub, custom molded enclosure |
9.1 | 🛒 Check Price |
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Kicker Sub Box for Single Cab Trucks Solid Performer Fits 1999-2007 Chevy Silverado, 12" sub, 0.85 cu ft sealed |
8.1 | 🛒 Check Price |
1. Atrend Bbox Single Cab Truck Sub Box: Best Overall
In our evaluation, the Atrend Bbox stands out as a top performer for single cab trucks. It is built from thick MDF and features a carpeted finish that matches most truck interiors. Based on owner feedback, the sealed enclosure delivers tight, accurate bass without overpowering the cabin. The box is designed to fit behind the seat of many popular models, maximizing space usage.
However, the fitment is not universal; it works best for specific Ford, Chevy, and Dodge models from the early 2000s to late 2010s. Owners with newer or less common trucks may need to check compatibility. Also, the sealed design may not satisfy those seeking extremely loud, ported bass. If you prioritize precise bass and a straightforward install, this is a strong choice, but skip it if you need a ported box for higher SPL.
- Designed specifically for single cab trucks with limited space
- Heavy-duty MDF construction with carpeted finish
- Precision-fit for popular models like Ford F-150, Chevy Silverado
Pros: Excellent fitment for many single cab trucks; Solid build quality reduces rattles
Cons: Limited to certain model years
2. QPower Single Cab Truck Sub Box: Best Value
For budget-conscious buyers, the QPower sub box offers a compelling balance of cost and performance. We compared its specs to more expensive models and found the 5/8″ MDF construction adequate for most users. Owner feedback indicates that it fits well behind the seat of Chevy Silverado and GMC Sierra models from the early 2000s, and the sealed enclosure provides clean bass.
The primary trade-off is durability; the thinner MDF may be more prone to damage over time, especially if the box is frequently moved or subjected to moisture. Additionally, the fitment is limited to certain truck generations. If you have a compatible truck and want to save money, this is a solid pick, but skip it if you need a heavy-duty box for off-road use or a universal fit.
- Affordable option without sacrificing sound quality
- Constructed from 5/8" MDF with black carpet
- Designed to fit behind the seat of select trucks
Pros: Great value for the price; Easy installation with pre-drilled holes
Cons: Thinner MDF may affect longevity
3. Supercrews Sound Single Cab Sub Box: Premium Pick
Supercrews Sound targets enthusiasts who want the best possible audio experience. In our evaluation, the birch plywood construction offers better acoustic properties and durability than standard MDF. The dual chamber design allows for two 10-inch subs, delivering powerful, balanced bass. Owner feedback praises the precise fit behind the seat of 2015-2020 Ford F-150s, with minimal installation effort.
However, the premium comes at a cost, and the box is limited to a narrow range of truck models. It may not fit older or non-Ford trucks. Also, the dual sub setup requires more amplifier power and space. If you own a late-model F-150 and want high-end bass, this is an excellent choice, but skip it if you have a different truck or a limited budget.
- High-quality birch plywood construction for reduced resonance
- Dual chamber design for two subwoofers
- Custom fit for late-model Ford F-150 single cabs
Pros: Superior build quality with birch wood; Excellent bass response for dual subs
Cons: Higher price point
4. MTX Terminator Single Cab Sub Box: Best for Bass
For those who crave maximum bass output, the MTX Terminator ported box is a strong contender. Based on manufacturer specs, the ported design increases efficiency, producing louder bass at lower frequencies. Owner feedback highlights the significant bump in volume compared to sealed boxes, making it ideal for rock and hip-hop. The box is built from MDF and includes a pre-installed terminal cup for easy wiring.
However, the ported design sacrifices some accuracy, resulting in boomier bass that may not suit all music genres. Also, the box is specifically tuned for MTX Terminator subs, so using other brands may not yield optimal performance. The build quality is adequate but not exceptional. If you prioritize loud bass over precision and plan to use MTX subs, this is a good fit; otherwise, consider a sealed alternative.
- Ported enclosure for louder, deeper bass
- Designed for MTX Terminator subwoofers
- Carpeted finish with terminal cup
Pros: Ported design boosts low-end output; Good match with MTX subs
Cons: Less accurate bass than sealed boxes
5. Bassworx Single Cab Truck Sub Box: Budget Friendly
The Bassworx sub box is a no-frills solution for budget-minded owners of older Dodge Ram single cab trucks. We compared its specs and found that the sealed enclosure provides acceptable bass for casual listening. Owner feedback indicates that it fits behind the seat of 1994-2004 Rams without modification, and installation is straightforward.
However, the thin MDF and lightweight construction raise concerns about long-term durability. The box may flex under heavy bass, leading to distortion or failure. Additionally, the carpet finish is prone to fraying. If you have an older Ram and want a temporary or low-cost bass solution, this box works, but skip it if you want a long-lasting, high-performance enclosure.
- Low-cost option for older Dodge Ram trucks
- Lightweight MDF construction
- Simple sealed design for easy setup
Pros: Very affordable; Fits older Dodge Ram models well
Cons: Less durable materials
6. JL Audio Stealthbox for Single Cab Trucks: Best Fitment
The JL Audio Stealthbox is the gold standard for integrated sub boxes. In our evaluation, the custom-molded fiberglass enclosure fits perfectly behind the seat of compatible trucks, often using otherwise wasted space. The included JL Audio subwoofer is optimized for the enclosure, delivering clean, powerful bass. Owner feedback consistently praises the installation ease and the factory-like appearance.
The major downside is the cost, which is significantly higher than generic boxes. Also, fitment is limited to specific models like the Toyota Tundra and some Ford/Chevy variants. If you own a compatible truck and want the best possible integration without sacrificing space, this is the top choice. Skip it if you have a different truck or a tight budget.
- Vehicle-specific molded design for perfect fit
- High-density fiberglass construction
- Includes JL Audio subwoofer pre-installed
Pros: Seamless integration with truck interior; Superior build quality and sound
Cons: Very expensive; Limited to specific truck models
7. Kicker Sub Box for Single Cab Trucks: Solid Performer
Kicker’s sub box offers a reliable middle-ground option for single cab trucks. Based on manufacturer specs, the sealed enclosure provides balanced bass that complements Kicker subwoofers well. Owner feedback notes that it fits behind the seat of late-model Chevy Silverados without issues, and the carpet finish matches most interiors.
However, the MDF thickness is average, and some users report slight flex at high volumes. The box is also limited to certain truck models. If you have a compatible Chevy and plan to use Kicker subs, this is a solid choice, but skip it if you need a more universal fit or higher power handling.
- Designed to work with Kicker subwoofers
- Medium-density fiberboard construction
- Carpeted exterior with speaker terminals
Pros: Good match with Kicker subs; Decent build quality for the price
Cons: Not as durable as premium boxes
Frequently Asked Questions
What size sub box fits behind the seat of a single cab truck?
Most single cab trucks have limited space behind the seat, typically accommodating 10-inch or 12-inch subwoofers in shallow or custom enclosures. Measure the depth, height, and width of the space behind your seat before purchasing. Many manufacturers list compatible truck models and years.
Should I choose a sealed or ported sub box for a single cab truck?
Sealed boxes provide tighter, more accurate bass and are generally smaller, making them easier to fit. Ported boxes are larger but produce louder, deeper bass. For single cabs where space is at a premium, sealed boxes are often the better choice unless you prioritize maximum SPL.
Can I install a sub box in a single cab truck without losing legroom?
Yes, most sub boxes are designed to fit behind the seat without compromising legroom. Some boxes are specifically molded to the contours of the truck. However, you may need to adjust the seat position slightly, especially if you have a deep box. Always check dimensions before buying.
Do I need a custom sub box for my single cab truck?
Not necessarily. Many universal and vehicle-specific boxes are available for popular models. Custom boxes offer the best fit and performance but are more expensive. If you have an uncommon truck or want maximum space utilization, a custom box may be worth the investment.
What materials are best for a sub box in a truck?
MDF (medium-density fiberboard) is the most common and offers good acoustic properties at a reasonable cost. Birch plywood is lighter and more durable but more expensive. Fiberglass is used for custom-molded boxes and offers excellent strength and weight savings. Avoid particle board as it is less durable.
Our Verdict
After researching and comparing the top options, the Atrend Bbox Single Cab Truck Sub Box earns our top pick for its excellent fitment, solid build, and balanced performance across a wide range of truck models. For those seeking premium integration, the JL Audio Stealthbox is the runner-up, offering unmatched fit and sound quality for compatible trucks, albeit at a higher cost.
Last reviewed and spec-checked: June 18, 2026. We re-check our picks and listings periodically.
