Description
BUILD YOUR STAGE THE RIGHT WAY.
This ported 10" subwoofer enclosure is the foundation for real low-end in the HD11. Designed to fit cleanly under the front or rear passenger side seat, it delivers the kind of output and bass response you can actually feel, without sacrificing a factory-style look.
SINGLE OR DUAL SUB SETUP.
The sub enclosure is designed for flexibility, mounting cleanly under either the front passenger seat, or the rear passenger seat, giving you the option to run a single or dual subwoofer setup. Using factory mounting locations, it installs without and cutting or modification, unlike other options on the market that require altering your floor. This means a clean, secure fit with an easy install that preserves your vehicle exactly as it should be.
TUNED FOR DEEPER BASS OUTPUT
The enclosure’s ported design is engineered to increase low-frequency efficiency and output, so you get deeper bass with more impact and less strain. More air movement, more authority, and a fuller bottom end that transforms the system.
Dual Under-Seat Fit: Purpose-built to mount cleanly under the passenger-side front or rear seat for a factory-style look.
Ported, Tuned Output: The ported enclosure is engineered for deeper bass, more efficiency, and more impact.
Hard-Hitting Low End: Built to deliver the bass response you can actually feel, even at speed and with the cab noisy.
Trail Ready™: Built to handle dust, water, vibration, and harsh riding conditions, on-road or off.
Subwoofer Enclosure
Material: High-Strength Rotomold
Port Width: 70mm
Port Length: 275mm
Port Tune: 38Hz
Subwoofer Mounting Depth: 140mm
Enclosure Airspace: .7 cu ft
Vehicle Compatibility
4-DOOR (MAX)
2026 MAX HD11 XT
2026 MAX HD11 XT CAB
2026 MAX HD11 X MR
2026 MAX HD11 LIMITED
2026 MAX HD11 LONE STAR / CAB
2-DOOR
2026 DEFENDER HD11 XT
2026 DEFENDER HD11 XT CAB
2026 DEFENDER HD11 X MR
2026 DEFENDER HD11 LIMITED
This ported 10" subwoofer enclosure is the foundation for real low-end in the HD11. Designed to fit cleanly under the front or rear passenger side seat, it delivers the kind of output and bass response you can actually feel, without sacrificing a factory-style look.
SINGLE OR DUAL SUB SETUP.
The sub enclosure is designed for flexibility, mounting cleanly under either the front passenger seat, or the rear passenger seat, giving you the option to run a single or dual subwoofer setup. Using factory mounting locations, it installs without and cutting or modification, unlike other options on the market that require altering your floor. This means a clean, secure fit with an easy install that preserves your vehicle exactly as it should be.
TUNED FOR DEEPER BASS OUTPUT
The enclosure’s ported design is engineered to increase low-frequency efficiency and output, so you get deeper bass with more impact and less strain. More air movement, more authority, and a fuller bottom end that transforms the system.
Dual Under-Seat Fit: Purpose-built to mount cleanly under the passenger-side front or rear seat for a factory-style look.
Ported, Tuned Output: The ported enclosure is engineered for deeper bass, more efficiency, and more impact.
Hard-Hitting Low End: Built to deliver the bass response you can actually feel, even at speed and with the cab noisy.
Trail Ready™: Built to handle dust, water, vibration, and harsh riding conditions, on-road or off.
Subwoofer Enclosure
Material: High-Strength Rotomold
Port Width: 70mm
Port Length: 275mm
Port Tune: 38Hz
Subwoofer Mounting Depth: 140mm
Enclosure Airspace: .7 cu ft
Vehicle Compatibility
4-DOOR (MAX)
2026 MAX HD11 XT
2026 MAX HD11 XT CAB
2026 MAX HD11 X MR
2026 MAX HD11 LIMITED
2026 MAX HD11 LONE STAR / CAB
2-DOOR
2026 DEFENDER HD11 XT
2026 DEFENDER HD11 XT CAB
2026 DEFENDER HD11 X MR
2026 DEFENDER HD11 LIMITED
Used Frequently Asked Questions
- What does used mean? Used products may be unused customer returns that are essentially "new" items, or they may be previously installed products that were returned under warranty or during our return policy period.
- What is the warranty? All of our used items come with a 90-day warranty.
- What's it look like? All of our used items are inspected and graded by our returns team at our facilities. They will test them and grade them to one of four standard gradings: Used Open Box, Used Very Good, Used Good, and Used Acceptable. Please see the following descriptions of each grade - also note that if an item falls under ANY of the criteria for a certain grade, even though the rest of the product is better, we will give it the lowest grade.
- Used Open Box An item in perfect working condition. Original protective wrapping may be missing, but the original packaging is intact and in good condition with minor damage possible. Instructions are included.
- Used Very Good A well-cared-for item with limited use, remains in good working condition. The item may show some limited signs of wear,small scratches,cosmetic blemishes. Item may arrive with damaged packaging or be repackaged and could be missing some accessories.
- Used Good The item shows wear from use, remains in good condition and functions properly. May have damaged packaging or be repackaged. It may be marked, have identifying markings on it, have minor cosmetic damage. It may be missing some parts or accessories.
- Used Acceptable The item is fairly worn but continues to function properly. While repackaged; signs of wear can include aesthetic issues; scratches, dents. The item may have markings on it or show signs of previous use. Item may be missing some parts or accessories.
- Have more questions? Call us, send us a chat, or an email. We'll be able to answer any additional questions you may have.