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2018 Subaru BRZ

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A custom-fit vehicle-specific sub solution for your BRZ saves space and offers a finish that is unrivaled.

Overview Upgrade your Stereo Upgrade your Speakers Add a Subwoofer Add an Amplifier Digital Sound Processors Audio Installation & Accessories Add a Backup Camera Dads & Grads Sale

Sub Boxes Custom-fit for your 2018 BRZ for 2018 Subaru BRZ

A BRZ custom-fit sub box is the best way to add bass without sacrificing space. You'll get a box that looks and sounds great and matches the factory "look" to a T.  We carry vehicle specific solutions like the NVX BOOST Boxes, JL Audio StealthBoxes, MTX Thunderforms and more.

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Number of Subwoofers
This value represents the number of subwoofers that the enclosure accommodates or that are included in the package or bundled kit.
Subwoofer Size
Refers to the diameter of the subwoofer, measured in inches.
Box Type
Represents the style of the enclosure. Be sure to purchase the appropriate enclosure type and internal volume that will be compatible with your subwoofer's recommendation.

Sealed - Sealed boxes are those that have no holes or vents in it. The only hole in a sealed box is where the subwoofer is installed. Smaller sealed boxes require more power than a larger sealed box. They provide a tight, accurate bass, while the larger sealed enclosures provide a "boomier" and louder bass.

Ported / Vented - Ported/Vented Enclosures provide an even boomier, louder bass, but less accurate then a small, sealed box. Ported enclosures typically require more airspace per sub and also less power output from an amplifier to perform correctly.

Bandpass - Bandpass enclosures make subwoofers perform efficiently, but loose. The bass is not as "boomy" as a ported enclosure nor as punchy as a sealed enclosure. Bandpass enclosures work well with lower to mid-level subwoofers.
Type of Enclosure
Some of our Vehicle Specific enclosures are loaded with a subwoofer and an amplifier, some are only loaded with a subwoofer, while some are empty boxes.
Deals
Promotions we have offer More Ways to Shop for items that are on clearance, last chance, special offer and sales, Made in America, and more!
Final Wired Impedance
This is the final impedance of the system as the amplifier will see it. If the final impedance is for two sets, it means that the enclosure has two sets of terminals at the listed impedance.
Box Finish
The material used on the outside of the box. Most boxes are carpeted to prevent exterior scratches; however vinyl is popular as it can often be color-matched to a near exact look of your leather factory interior.
Condition
Availability
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JL Audio Stealthbox® SB-S-BRZFRS/10TW3

Custom fit subwoofer enclosure for select 2013-2020 BRZ and 86 and FR-S

SB-S-BRZFRS/10TW3 big
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JL Audio Stealthbox® SB-S-BRZFRS/10TW3

Custom fit subwoofer enclosure for select 2013-2020 BRZ and 86 and FR-S

• Loaded Vehicle Specific Stealthbox Subwoofer Enclosure with Single JL Audio 10TW3-D4
• 400 Watts RMS
• For 2013-Up Subaru BRZ / Scion FR-S
• Stealthbox Installsin the passenger side rear corner of the trunk

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$1,049.99

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Used from: $892.49

JL Audio Stealthbox® SB-S-BRZFRS/10TW3 (Open Box, Great)

Custom fit subwoofer enclosure for select 2013-2020 BRZ and 86 and FR-S

SB-S-BRZFRS/10TW3 big
Go to item page Right Arrow Icon of Right Arrow

JL Audio Stealthbox® SB-S-BRZFRS/10TW3 (Open Box, Great)

Custom fit subwoofer enclosure for select 2013-2020 BRZ and 86 and FR-S

• Loaded Vehicle Specific Stealthbox Subwoofer Enclosure with Single JL Audio 10TW3-D4
• 400 Watts RMS
• For 2013-Up Subaru BRZ / Scion FR-S
• Stealthbox Installsin the passenger side rear corner of the trunk

shipping truck icon Free shipping in USA. Provide zip for delivery date.
found car based on your search
Fits your BRZ
List price $1049.99
-15% $892.49

Available

Add to Cart
 
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    FAQ for Custom-fit Subwoofer Boxes & Enclosures in 2018 BRZ

    Q: Can I upgrade or change the Custom-fit Subwoofer Boxes & Enclosures in 2018 Subaru BRZ?

    A: Yes this page includes all the best Custom-fit Subwoofer Boxes & Enclosures that work in your BRZ.

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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
    • You avoid incompatible radios, speakers, or wiring
    • Installation is smoother, faster, and frustration-free
    • You get the correct accessories the first time

    Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.

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