See all parts that fit your 2014 3
121RP, 121KPRO
Product highlights
12" Round Hole, Rear Ported Subwoofer Enclosure • Mounting depth: 10-3/4" • Box volume: 2.80 cubic feet • Total port volume: 0.30 cubic feet
Learn more about the 121kpro
Install New Front Kick Panel Speakers in select 2009-2024 vehicles from Ford, Mazda, Lincoln
$11.99
List price $14.99
Connect your factory antenna to a new aftermarket radio for select 2005-2024 vehicles from Honda, Mazda, Acura
$10.99
List price $12.99
American International GMSB356
6.5" to 6.75" Speaker Mounting Adapters for select 1997-2020 vehicles from Chevrolet, GMC, Pontiac
$9.99
List price $24.00
Speaker Adapters to Mount Tweeter without Adapter or Modification for select 1990-2024 vehicles from Dodge, Subaru, Ram
$11.99
List price $24.99
Install a new Double-DIN car stereo in select 2014-2018 3
$89.99
List price $99.99
Crux SWRMZ-64C Wiring Interface
Install new car stereo and retains steering wheel audio controls and other factory features in select 2003-2015 vehicles from Mazda
$85.05
List price $132.30
Universal 6.5" Waterproof Silicone Rubber Speaker Baffle Ring Kit (Pack of 2)
$21.99
List price $34.99
600W Peak (200W RMS) 6.5” CS Series 2 Way Coaxial 4-ohm Speakers
$79.96
List price $119.99
7" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Apple CarPlay and Android Auto (SiriusXM Ready)
$329.95
List price $349.95
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(newest, current model)
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(previous model, replaced by Ground Shaker SQPXL 1 12)
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6.75" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Apple CarPlay, Android Auto with Backup Camera
$329.99
600W Peak (200W RMS) 6.5” CS Series 2 Way Coaxial 4-ohm Speakers
$79.96
List price $119.99
6.8" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Apple CarPlay, Android Auto, and SiriusXM Ready
$349.99
List price $420.00
7" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Apple CarPlay and Android Auto (SiriusXM Ready)
$329.95
List price $349.95
150W Peak (50W RMS) 3.5" Club Series 2 Way Coaxial 3-ohm Speakers
$79.95
List price $109.95
6.8" Double DIN Digital Multimedia Receiver with Bluetooth, Wireless Apple CarPlay, and Android Auto (SiriusXM Ready)
$599.99
List price $750.00
480W Peak (120W RMS) 6.5” DS Series 2-way 4-ohm Coaxial Car Speakers (DSC6504)
$84.99
List price $94.99
600W Peak (200W RMS) 6.5" DB+ Series 2 Way Coaxial 4-ohm Car, Marine and Powersports Speakers
$109.00
List price $119.99
6.2" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Apple CarPlay, Android Auto and Phone Mirroring
$89.99
List price $269.99
360W Peak (120W RMS) 6.5" Club Series 2-way Coaxial 3-ohm Speakers
$99.95
List price $139.95
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Manufacturer:
Model Number:
121KPRO
Weight:
51.00lbs
Internal SKU:
121kpro
Internal Product ID:
14600
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Best Bass Pounding Box EVER!!
I have the Hifonics Brutus OLM1612 sub enclosed in this bad boy box and it pounds like no other. Its a very solid box and is true to the dimensions and box volume...I would HIGHLY suggest buying this box to my friends, family or strangers (plus Sonic has the best shipping, was super fast). If you want an all around great looking, great sounding and great performing box...then just click.."+ Add to Cart" button and let the pounding begin!!
5 found this helpful
Good prefab box
Box does look clean and nicely built. Put my american bass 12" xfl in it and it pounds! Had to make cut out a lil bigger for my sub to fit but not a big deal recommended for anyone who can't build their own
5 found this helpful
Nice Box
dropped my FiQ12 into it...well built and very solid looks really clean with the black carpet
5 found this helpful
12'' Ported Box
I recenly purchased this box along with the power acoustiq mofo 122x. I tried the mofo in a box i had for two kicker comp 12's, and it didnt sound up to par. When i put it in this box, its like it got 10x louder. And it hits the lows perfect like i wanted. Cant really use my rearview or sideview mirrors.
The box is well built and sturdy. I drive a 99 blazer 2 door btw.
4 found this helpful
awesome box for the money
I have my Alpine Type R in this and it pounds! I had it in a .8cu ft box I got at bestbuy and it was too small and choked it out, the whole car vibrates now and hits lower notes better, gets those real low ones i love :) only thing I don't like is the port is on the side so its kind of against the trunk, but its far back enough to work so if you have a small car like a civic you just need to measure =]
4 found this helpful
Destroyed
I got this box for my 12" Fi BTL and it's a great box while it lasted. Now my box smacks wood and sounds horrible i had to put 5 screws to keep it from making that sound. this box is perfect unless you have something pushing to much power like my sub
4 found this helpful
booom!
This box kicks hard! It makes my JL Audio 12w3v3 hit so harder than it did before in my old 1.3 cu ft ported box. I love it. I would definitely recommend this box and website to anybody. Thanks Sonic
4 found this helpful
Very Nice!
Solidly built, and Creates nice bass. Very good price also. Nice color, and nice to have built-in terminals.
4 found this helpful
Great Buy! Custom Enclosures 12" Round Hole, Long Rear Slot Ported Enclosure
Bought a big enclosure in order for it to fit exactly in my trunk and wouldn't move and slam around because of my driving :p. I really love it, bass kicks great even of how big it is. It is ported so it helped out from the size. Great Buy! Great quality! Recommend!
3 found this helpful
Good Deal
Used this box for a Fi Bl 12 and it slammed hard. The tuning frequency is around 41-42 hz so the lows arent very loud and the sound quality isnt always the best but its good for a prefab box. Good box if you dont mind that high of a tuning.
3 found this helpful
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Universal Beige Headrest with Built-in 7" Headrest Monitor and Remote
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universal Hands-Free Bluetooth In-Car Speakephone with StationFinder ™ Technology (89383N)
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Install a new Single-DIN car stereo in select 2005-2012 vehicles from Chevrolet, Pontiac, Saturn (Silver)
(3)
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(3)
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4 Band Pre-Amp EQ Half Din with Remote Subwoofer Filter and Level Control
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Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:
Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.
