Contact us
Close contact box
Connect ID #
861 395 422 3

Our hours

Connect ID #
861 395 422 3
Chat
All finished with your chat session?

We’ll email you a transcript of this conversation for your records.

We're sorry, chat is not available at this time.

Please enter your name.  
Please enter a valid email address. Why is this required?
Please enter your US phone number.  

For Tech Support, call 1-800-955-9091

Thank you, !
Our conversation will be emailed to
Please enter a question  
Don't wait on hold. We'll call you back when it's your turn to talk with the next available .
Please enter your name  
Please enter your phone number  

Please enter a message  

Calls may be recorded for training and quality control purposes.

We are located in Virginia USA.

MTX ThunderForm Unloaded Enclosure

Holds two 10" subs — fits select 2000-06 Ford F-250 and F-350 Standard Cab (Charcoal)

Item # 23625RC20U

Crinkled french fries, discarded receipts, old gum wrappers — you probably have everything in the hidden...

Find what Fits your car

Crinkled french fries, discarded receipts, old gum wrappers — you probably have everything in the hidden...

California customers:
Please click here for your Proposition 65 warning.

Item # 23625RC20U

$349.99

Other options

About the MTX ThunderForm Unloaded Enclosure

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.

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 two of your favorite 10" subwoofers. For best results, MTX strongly recommends using a speaker designed for an enclosure with a volume of 0.73 cubic foot. The enclosure mounts behind the front seat of select 2000-06 Ford F-250 and F-350 Standard Cab pickups. The jack and tools are relocated to a cutout in the center of the enclosure.

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.

READ LESS

Product highlights:

  • custom-fit charcoal subwoofer enclosure for two 10" subs
  • mounts behind the front seat
  • fiberglass construction
  • volume: 1.46 cubic foot (0.73 per sub)
  • dimensions: 15-3/4"H x 52-3/4"W x 9" BD x 5" TD
  • mounting depth: 6-1/4"
  • warranty: 2 years
  • Our 60-day money-back guarantee
  • MFR # F250R00C20U

What's in the box:

  • Custom-fit unloaded dual 10" subwoofer enclosure
  • Hardware
  • Installation instructions

Customer reviews

We don't have any reviews, yet.
Submit a review and then enter to win a $350 Rewards card.
Be the first to review this product

Loading reviews...

Thanks for submitting your review

Filter by rating

Customer photos

Sort reviews

Sort by:
Items per page:
View page:

Verified customer (What's this?)
Verified employee purchase (What's this?)

Pros:

Cons:

Crutchfield response

<< >>

More details on the MTX ThunderForm Unloaded Enclosure

Pat M.

Product Research

Features

Vehicle Compatibility: This Bass Slammer custom-fit enclosure is designed specifically to fit the 2000-2006 Ford F-250/350 regular cab pickup truck.

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

Mounting Location: The enclosure mounts behind the front seats, firing forward, in the Ford F-250/350 Regular cab trucks. The factory jack and tools relocate to center of enclosure in molded cut-out and are easily accessible.

Enclosure Type: The sealed enclosure features fiberglass construction and fits two 10" woofers.

Tools For Installation:

  • Powered screwdriver
  • 6" Bit holder extension
  • #2 Phillips head bit
  • 5/16" Socket

Loading accessories...

Customer Q&A

Loading articles...

TOP