For over 20 years MTX has been manufacturing vehicle specific custom enclosures that are designed to be installed in space that would otherwise go unused in your vehicle. All models are made in our manufacturing facility in Monroe, WI by our highly technical trained staff to ensure that your experience is more than you expected.

All Thunderform models are manufactured using highly technical rotomold or fiberglass processes to create lightweight, durable enclosures that are available in two formats: amplified or loaded.

  • Amplified models include an integrated high efficiency amplifier and custom subwoofer that deliver an exceptional performance with easy installation. Mounting hardware and amplifier kits are included in each model to make installation easy.
  • Loaded models include a custom 4Ω, 200W RMS subwoofer that can be used with existing amplifiers or with upgraded amplifiers.
C15EX07FB10A-TN

Chevrolet Silverado Extended Cab Amplified 10 inch 200W RMS Vehicle Specific Custom Subwoofer Enclosure

Fits Chevrolet Silverado Extended Cab 2007-2015

Amplified Thunderform with a single, hard hitting ten inch Terminator Subwoofer powered with 200 watts RMS.

Fits Chevrolet Silverado 1500/2500 Double Cab 2007-2015. Finished in Black.

$649.95 $549.95
Free shipping
CXP20AC-TN

Chevrolet Silverado Extended Cab Amplified Dual 10 inch 200W RMS Vehicle Specific Custom Subwoofer Enclosure

Fits Chevrolet Silverado Extended Cab 1999-2006

Amplified Thunderform with dual, hard hitting, ten inch Terminator Subwoofers powered with 200 watts RMS.

Fits Chevrolet Silverado Extra Cab 1999-2006, also fits Ext Cab GMC pickups and 3-door models. Finished in charcoal.

This item is currently out of stock. Please see the loaded version by clicking HERE.

$799.95 $699.95
Free shipping
CXP20AT-TN

Chevrolet Silverado Extended Cab Amplified Dual 10 inch 200W RMS Vehicle Specific Custom Subwoofer Enclosure

Fits Chevrolet Silverado Extended Cab 1999-2006

Amplified Thunderform with dual, hard hitting, ten inch Terminator Subwoofers powered with 200 watts RMS.

Fits Chevrolet Silverado Extra Cab 1999-2006, also fits Ext Cab GMC pickups and 3-door models. Finished in Tan.

This item is currently out of stock. Please see the loaded version by clicking HERE.

$799.95 $699.95
Free shipping
CXP10LAC-TN

Chevrolet Silverado Extended Cab Amplified 10 inch 200W RMS Vehicle Specific Custom Subwoofer Enclosure

Fits Chevrolet Silverado Extended Cab 1988-1998

Amplified Thunderform with a single, hard hitting ten inch Terminator Subwoofer powered with 200 watts RMS.

Fits Chevrolet Silverado Extra Cab 1988-1998, also fits Ext Cab GMC pickups and 3-door models. Finished in Charcoal.

$649.95 $549.95
Free shipping
CXP10LC-TN

Chevrolet Silverado Extended Cab Loaded 10 inch 200W RMS 4 Ohm Vehicle Specific Custom Subwoofer Enclosure

Fits Chevrolet Silverado Extended Cab 1988-1998

Loaded Thunderform with a single, hard hitting ten inch Terminator Subwoofer rated at 200 watts RMS @ 4 ohms.

Fits Chevrolet Silverado Extra Cab 1988-2006, also fits Ext Cab GMC pickups and 3-door models. Finished in Charcoal.

$549.95 $449.95
Free shipping
CXP10LAT-TN

Chevrolet Silverado Extended Cab Amplified 10 inch 200W RMS Vehicle Specific Custom Subwoofer Enclosure

Fits Chevrolet Silverado Extended Cab 1988-1998

Amplified Thunderform with a single, hard hitting ten inch Terminator Subwoofer powered with 200 watts RMS.

Fits Chevrolet Silverado Extra Cab 1988-2006, also fits Ext Cab GMC pickups and 3-door models. Finished in Tan.

$649.95 $549.95
Free shipping
CXP10LT-TN

Chevrolet Silverado Extended Cab Loaded 10 inch 200W RMS 4 Ohm Vehicle Specific Custom Subwoofer Enclosure

Fits Chevrolet Silverado Extended Cab 1988-1998

Loaded Thunderform with a single, hard hitting ten inch Terminator Subwoofer rated at 200 watts RMS @ 4 ohms.

Fits Chevrolet Silverado Extra Cab 1988-2006, also fits Ext Cab GMC pickups and 3-door models. Finished in Tan.

$549.95 $449.95
Free shipping
C15EX07FB10-TN

Chevrolet Silverado Extended Cab Loaded 10 inch 200W RMS 4 Ohm Vehicle Specific Custom Subwoofer Enclosure

Fits Chevrolet Silverado Extended Cab 2007-2015

Loaded Thunderform with a single, hard hitting ten inch Terminator Subwoofer rated at 200 watts RMS @ 4 ohms.

Fits Chevrolet Silverado 1500/2500 Double Cab 2007-2015. Finished in Black.

$549.95 $449.95
Free shipping
CXP20C-TN

Chevrolet Silverado Extended Cab Loaded Dual 10 inch 400W RMS 4 Ohm Vehicle Specific Custom Subwoofer Enclosure

Fits Chevrolet Silverado Extended Cab 1999-2006

Loaded Thunderform with dual, hard hitting, ten inch Terminator Subwoofers rated at 200 watts RMS @ 4 ohms each.

Fits Chevrolet Silverado Extra Cab 1999-2006, also fits Ext Cab GMC pickups and 3-door models. Finished in Charcoal.

$549.95 $449.95
Free shipping
CXP20T-TN

Chevrolet Silverado Extended Cab Loaded Dual 10 inch 400W RMS 4 Ohm Vehicle Specific Custom Subwoofer Enclosure

Fits Chevrolet Silverado Extended Cab 1999-2006

Loaded Thunderform with dual, hard hitting, ten inch Terminator Subwoofers rated at 200 watts RMS @ 4 ohms each.

Fits Chevrolet Silverado Extra Cab 1999-2006, also fits Ext Cab GMC pickups and 3-door models. Finished in Tan.

$549.95 $449.95
Free shipping