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Custom-fit Subwoofer Boxes for your 2018 RLX

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DS18 EBM-FFPGLAD-2X8

Empty Dual 8" Vented Underseat Enclosure for select 2020-2026 Gladiator

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Empty Dual 8" Vented Underseat Enclosure for select 2020-2026 Gladiator

• 8" Dual Ported Subwoofer Enclosure
• Medium Density Fiberboard (MDF) construction
• Custom fit front-firing under seat construction
• Integrates seamlessly to truck's cabin
• Total box volume: 2 cubic feet

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No Fit Icon Doesn't fit your RLX

$479.95

In stock.

• 8" Dual Ported Subwoofer Enclosure
• Medium Density Fiberboard (MDF) construction
• Custom fit front-firing under seat construction
• Integrates seamlessly to truck's cabin
• Total box volume: 2 cubic feet

Limited time!

NVX Loaded BOOST Box - 2002-2018 Ram Quad, Crew Cab - LVE-DOD-RAMQCCG3-S10S

For select 2002-2018 1500 and Ram 1500 Quad and Crew Cab - Single 10" 350W RMS Loaded BOOST Sealed Truck Enclosure

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For select 2002-2018 1500 and Ram 1500 Quad and Crew Cab - Single 10" 350W RMS Loaded BOOST Sealed Truck Enclosure

• Custom-Fit BOOST Sealed truck enclosure with 1 10" S Series Subwoofers
• Compatible with select 2002-2018 1500 and Ram 1500
• 350 watts RMS (700 watts Peak)
• Final Impedance: 2-ohm

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No Fit Icon Doesn't fit your RLX

List price $251.99
-21% $199.99

In stock

Limited time!

JL Audio Stealthbox® SBX-J-JL4D24/12TW3

Custom-Fit Loaded 12" Subwoofer Enclosure for select 2024-2026 Wrangler Unlimited

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Custom-Fit Loaded 12" Subwoofer Enclosure for select 2024-2026 Wrangler Unlimited

• Sealed enclosure with 1 12" Stealthbox Series Subwoofer
• Designed for select 2024-2026 Wrangler Unlimited
• 400 watts RMS Power Handling
• Final Impedance: 2-ohm

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List price $1499.99
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-20% $1,199.99

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• Sealed enclosure with 1 12" Stealthbox Series Subwoofer
• Designed for select 2024-2026 Wrangler Unlimited
• 400 watts RMS Power Handling
• Final Impedance: 2-ohm

Atrend A332-10

Empty Dual 10" Sealed Truck-Style Enclosure for select 1997-1999 F-150

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Empty Dual 10" Sealed Truck-Style Enclosure for select 1997-1999 F-150

• 10" Single Sealed Subwoofer Enclosure for select 1997-1999 F-150
• 3/4" Medium Density Fiberboard (MDF) construction
• Total box volume: 1.4 cubic feet
• Compatible with select 1997-1999 F-150

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No Fit Icon Doesn't fit your RLX

List price $235.95
-23% $181.95

Available

Ships in 10-14 days

Limited time!

DS18 JT-S62

Empty Dual 6.5" Sealed Under Seat Enclosure for select 2020-2026 Gladiator

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Empty Dual 6.5" Sealed Under Seat Enclosure for select 2020-2026 Gladiator

• 6.5" Dual Sealed Under Seat Subwoofer Enclosure for select 2020-2026 Gladiator
• Medium Density Fiberboard (MDF) construction
• Total box volume: 0.85 cubic feet
• Mounting bracket and hardware included
• Built-in RGB LED lights in DS18 logos badge

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No Fit Icon Doesn't fit your RLX

List price $459.95
Save $68.99
-15% $390.96

In stock.

Limited time!

NVX Loaded BOOST Box - 2017-2021 Honda Civic/Civic Type R - BE-HON-CVCHB-G10

For select 2017-2021 Civic Type R Hatchback - Single 10" 350W RMS Loaded BOOST Sealed Enclosure

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For select 2017-2021 Civic Type R Hatchback - Single 10" 350W RMS Loaded BOOST Sealed Enclosure

• Sealed BOOST enclosure with 1 10" S Series Subwoofer
• Fits select 2017-2021 Civic Type R
• 350 watts RMS (700 watts Peak)
• Final Impedance: 2-ohm

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No Fit Icon Doesn't fit your RLX

List price $455.99
-39% $279.99

In stock

Only 3 Left!

NVX Empty BOOST Box - 2017-2023 GMC Acadia and Acadia Limited - UBE-GMC-ACA-G2

For select 2017-2023 Acadia Limited - Single 10" Empty BOOST Sealed Enclosure

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For select 2017-2023 Acadia Limited - Single 10" Empty BOOST Sealed Enclosure

• Custom Fit Empty Single 10" BOOST Sealed Enclosure
• Compatible with select 2017-2023 Acadia Limited
• Made with hand-laid fiberglass shell covered in Carpet
• Total box volume: 0.57 cubic feet

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No Fit Icon Doesn't fit your RLX

List price $275.99
-17% $229.99

In stock

Only 3 Left!

Limited time!

NVX BOOST Box - 2007-2013 Chevrolet Silverado, GMC Sierra - LVE-GM-SLVCCG2-D12S

For select 2007-2013 Silverado 1500 / 2500 HD / 3500 HD / Hybrid and Sierra 1500 / 2500 HD / 3500 HD / Denali / Hybrid Crew Cab - Dual 12" 800W RMS Loaded Down Firing BOOST Sealed Truck Enclosure

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For select 2007-2013 Silverado 1500 / 2500 HD / 3500 HD / Hybrid and Sierra 1500 / 2500 HD / 3500 HD / Denali / Hybrid Crew Cab - Dual 12" 800W RMS Loaded Down Firing BOOST Sealed Truck Enclosure

• Custom-Fit BOOST Sealed truck enclosure with 2 12" S Series Subwoofers
• Compatible with select 2007-2013 Silverado 1500 / 2500 HD / 3500 HD / Hybrid and Sierra 1500 / 2500 HD / 3500 HD / Denali / Hybrid
• 400 watts RMS (800 watts Peak)
• Final Impedance: 1-ohm

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No Fit Icon Doesn't fit your RLX

List price $443.99
-19% $359.99

In stock

Only 3 Left!

JL Audio Stealthbox® SB-F-150-SPRCRW/13TW5v2/TN

Custom fit subwoofer enclosure for select 2009-2025 vehicles from Ford (Camel)

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Custom fit subwoofer enclosure for select 2009-2025 vehicles from Ford (Camel)

• Custom Stealthbox Enclosure with One 13TW5v2-2 Subwoofer
• 1200W Max • 600W RMS
• For 2009-Up Ford-150 SuperCrew
• Installs Under Driver-Side of Rear Bench Seat
• Fiberglass Carpeted Sealed Enclosure

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No Fit Icon Doesn't fit your RLX

$1,399.99

In stock

Only 1 Left!

Used from: $1,202.80

• Custom Stealthbox Enclosure with One 13TW5v2-2 Subwoofer
• 1200W Max • 600W RMS
• For 2009-Up Ford-150 SuperCrew
• Installs Under Driver-Side of Rear Bench Seat
• Fiberglass Carpeted Sealed Enclosure

Limited time!

NVX LVE-NIS-TTNCKCG1-D12S

Custom Fit 800W RMS Dual 12" Loaded Subwoofer Enclosure for 2004-2018 Nissan Titan Crew and King Cab Trucks

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Custom Fit 800W RMS Dual 12" Loaded Subwoofer Enclosure for 2004-2018 Nissan Titan Crew and King Cab Trucks

• Fits 2004-2018 Nissan Titan Crew and King Cab trucks
• Crafted from 3/4" MDF for enhanced durability and sound performance
• Loaded with two 12" SMW12D4 Subwoofers
• Installs quickly and easily under the rear seat

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List price $443.99
-19% $359.99

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• Fits 2004-2018 Nissan Titan Crew and King Cab trucks
• Crafted from 3/4" MDF for enhanced durability and sound performance
• Loaded with two 12" SMW12D4 Subwoofers
• Installs quickly and easily under the rear seat

Limited time!

JL Audio Stealthbox® SBX-J-JTGLAD/10TW1

Custom Fit 10" Subwoofer Enclosure for select 2020-2026 Gladiator

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Custom Fit 10" Subwoofer Enclosure for select 2020-2026 Gladiator

• Sealed enclosure with 2 10" Stealthbox Series Subwoofer
• 300 watts RMS each
• Final Impedance: 2-ohm

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1
List price $2999.99
Save 47%
-47% $1,599.99

In stock

Only 1 Left!

• Sealed enclosure with 2 10" Stealthbox Series Subwoofer
• 300 watts RMS each
• Final Impedance: 2-ohm

JL Audio Stealthbox® SB-GM-SLVCC2/12TW3/BK

Custom fit subwoofer enclosure for select 2007-2013 Sierra and Silverado (Ebony)

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Custom fit subwoofer enclosure for select 2007-2013 Sierra and Silverado (Ebony)

• Loaded Vehicle Specific Stealthbox Subwoofer Enclosure with Dual JL Audio 12TW3-D4
• 800 Watts RMS
• For 2007-2013 Chevrolet Silverado / GMC Sierra Crew Cab Trucks with Ebony interior
• Stealthbox installs neatly under rear seat

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1
$2,099.99

Available

Ships in 10-14 days

Select Increments Neo-Pod 31649

Empty Single 8" Sealed Neo-Pod Enclosure for select 2007-2018 Wrangler (JK) / Unlimited / Unlimited (JK)

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Empty Single 8" Sealed Neo-Pod Enclosure for select 2007-2018 Wrangler (JK) / Unlimited / Unlimited (JK)

• 8" Single Sealed Neo-Pod Subwoofer Enclosure
• Durable plastic construction
• Total box volume: 0.375 cubic feet
• Compact size keeps cargo space intact
• Houses 8" shallow or slim mount subwoofers

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No Fit Icon Doesn't fit your RLX

$239.95

In stock.

Atrend A391-10V

Empty Single 10" Vented Rear Truck-Style Enclosure for select 1999-2007 F-250 Super Duty and F-350 Super Duty and F-450 Super Duty

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Empty Single 10" Vented Rear Truck-Style Enclosure for select 1999-2007 F-250 Super Duty and F-350 Super Duty and F-450 Super Duty

• 10" Single Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Total box volume: 1.05 cubic feet
• Compatible with select 1999-2007 F-250 Super Duty and F-350 Super Duty and F-450 Super Duty

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No Fit Icon Doesn't fit your RLX

List price $349.99
-42% $203.99

Available

Ships in 10-14 days

AudioControl TXGM19D10

1400W RMS Loaded Dual 10" Sealed Truck Enclosure for select 2019-2024 Sierra and Silverado 1500 / 2500 HD / 3500 HD

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1400W RMS Loaded Dual 10" Sealed Truck Enclosure for select 2019-2024 Sierra and Silverado 1500 / 2500 HD / 3500 HD

• Sealed truck enclosure with 2 10" Spike Series Subwoofer
• 1400 watts RMS
• Final Impedance: 4-ohm
• Compatible with select 2019-2024 Sierra and Silverado 1500 / 2500 HD / 3500 HD
• Dimensions: 14.25" L x 10.25" H x 52.00" W

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List price $1399.00
-7% $1,299.00

Available

Ships in 10-14 days

JL Audio Stealthbox® SB-T-TUNDCMAX/13TW5v2

Custom fit subwoofer enclosure for select 2007-2013 Tundra

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Custom fit subwoofer enclosure for select 2007-2013 Tundra

• Loaded Vehicle Specific Stealthbox Subwoofer Enclosure with Single JL Audio 12W3v3-4
• 600 Watts RMS
• For 2007-2013 Toyota Tundra CrewMax
• Stealthbox Installs behind the rear bench

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No Fit Icon Doesn't fit your RLX

$1,449.99

In stock

Only 1 Left!

Used from: $1,449.99
Limited time!

NVX BOOST Box - 2014-2018 Chevrolet Silverado, GMC Sierra - LVE-GM-SLVDCG3-D10S

For select 2014-2018 Sierra 1500 / 2500 HD / 3500 HD and Silverado 1500 / 2500 HD / 3500 HD Double Cab - Dual 10" 700W RMS Loaded Up Firing BOOST Sealed Truck Enclosure

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For select 2014-2018 Sierra 1500 / 2500 HD / 3500 HD and Silverado 1500 / 2500 HD / 3500 HD Double Cab - Dual 10" 700W RMS Loaded Up Firing BOOST Sealed Truck Enclosure

• Custom-Fit BOOST Sealed truck enclosure with 2 10" S Series Subwoofers
• Compatible with select 2014-2018 Sierra 1500 / 2500 HD / 3500 HD and Silverado 1500 / 2500 HD / 3500 HD
• 350 watts RMS (700 watts Peak)
• Final Impedance: 1-ohm

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No Fit Icon Doesn't fit your RLX

List price $419.99
-19% $339.99

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Select Increments Stealth-Pod 40473

Empty Single 10" Sealed Stealth-Pod Enclosure for select 1987-2018 Wrangler (JK) / Unlimited / Unlimited (JK)

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Empty Single 10" Sealed Stealth-Pod Enclosure for select 1987-2018 Wrangler (JK) / Unlimited / Unlimited (JK)

• 10" Single Sealed Stealth-Pod Subwoofer Enclosure for select 1987-2018 Wrangler (JK) / Unlimited / Unlimited (JK)
• Durable textured heavy-duty plastic construction
• Total box volume: 0.70 cubic feet
• Compact size keeps cargo space intact
• Easily removable stealth-pod

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No Fit Icon Doesn't fit your RLX

$289.95

In stock.

AudioControl TXFBB12

400W RMS Loaded Single 12" Sealed Swing Gate Enclosure for

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400W RMS Loaded Single 12" Sealed Swing Gate Enclosure for

• Sealed enclosure with 1 12" Subwoofer
• 400 watts RMS
• Final Impedance: 2-ohm
• Mounts on the vehicle's swing gate
• Dimensions: 6.1" L x 14" H x 28.5" W

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No Fit Icon Doesn't fit your RLX

List price $799.00
-21% $629.00

In stock

Stinger TXTRB10

800W Peak (400W RMS) Loaded Single 10" Enclosure for select 2007-2020 vehicles from Ford, Chevrolet, GMC

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800W Peak (400W RMS) Loaded Single 10" Enclosure for select 2007-2020 vehicles from Ford, Chevrolet, GMC

• 10” Vented Subwoofer Enclosure for Full-Size Trucks and Other Vehicles
• Preloaded with single 10" P-TX10D4 Subwoofers
• Vented enclosure with Durable Texture UAT (Urethane Acrylic Terpolymer) Enclosure Coating
• Enclosure Dimensions: 12.52" TD x 14.13" BD x 18.11" W x 7.72" H

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List price $649.00
-11% $579.00

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    All About

    Custom-fit Subwoofer Boxes
    Finding custom fit car subwoofers and boxes doesn't have to be a tedious task. We get it, you don't just want to buy a set of speakers or a box that "might fit" your vehicle, you want want that actually gets the job done. Our wide selection of vehicle-specific subwoofer & boxes will have you rockin n rolling in no time.
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    We love people and we're ready to help you! See what separates us from our competition.

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    Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

    • You see only parts engineered for your exact vehicle
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    Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.