MTX ThunderForm Unloaded Enclosure

Holds a single 12" sub — fits 2000-07 Ford Focus ZX3 or ZX5 (Tan)

Item #: 236FZXT12U

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Crinkled french fries, discarded receipts, old gum wrappers — you probably have everything in the hidden corners of your vehicle except great bass. ThunderForm enclosures fill the nooks and crannies of your vehicle with low tones that stand out, but their factory look blends right in.

MTX engineers evaluate the "sonic signatures" of top-selling vehicles so they can design ThunderForms as custom acoustic matches. Each ThunderForm fits and blends inconspicuously into your vehicle, so you get great bass without losing any space. They're made of high-density polyethylene resin to curb resonances — they deliver bass that's tight, hard-hitting, and way down low. The airtight enclosure provides the correct internal volume to yield optimum bass response.

This enclosure comes without a speaker — you install your favorite 12" subwoofer. For best results, MTX strongly recommends using a speaker designed for an enclosure with a volume of 1.25 cubic feet. The enclosure mounts behind the rear seat on driver's side of the hatch in select 2009-up Ford Focus ZX3 or ZX5 models.

Please check with us before purchasing by using the vehicle selector on our site, or calling an Advisor at 1-888-955-6000 to verify fit information.

Product Highlights:

  • custom-fit tan subwoofer enclosure for 12" sub
  • mounts behind rear seat on driver's side of hatch
  • fiberglass construction
  • volume: 1.25 cubic feet (sealed)
  • dimensions: 29-1/2"H x 20-1/2"W x 10"D
  • mounting depth: 6-7/8"
  • warranty: 5 years (free repair or replacement for 2 years, prorated replacement for years 3 through 5)
  • Our 60-day money-back guarantee

Hands-on research

What's in the box?

Download owner's manual

  • Custom-fit unloaded 12" subwoofer enclosure
  • Hardware
  • Installation instructions

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Features
Warranty

Features

Vehicle Compatibility: This Bass Slammer custom-fit enclosure is designed specifically to fit the 2000-2007 Ford Focus (XZ5 & ZX3).

Note: Please refer to the Crutchfield Vehicle Selector to confirm fit for your vehicle.

Mounting Location: The enclosure mounts in the rear drivers side, behind the back-seat firing to the side of the Ford Focus hatchback. Your vehicle's spare tire will still be accessible.

Enclosure Type: The sealed enclosure features fiberglass construction and fits one 12" woofer.

Tools For Installation:

  • Powered screwdriver
  • #2 Phillips head bit
  • 6" Bit holder extension
  • Wire cutters

Warranty

5 Year Warranty Terms: This product carries a 5-Year Prorated Warranty with the following terms:

  • Years 1-2: Products found to be defective in materials or workmanship during the first two years will be, at Mitek's option, repaired or replaced by Mitek at no charge. The warranty period does not renew, but continues on from the original date of purchase.
  • Years 3-5: The purchase price of an item which becomes defective after the first two years and prior to the end of the warranty period will be prorated and credited toward the purchase of a new MTX product. The amount of proration is determined by dividing the original purchase price by the number of months in the warranty period (60), then multiplying the result by the number of months remaining in the warranty period.

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team — they open the box, verify contents, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

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