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JL Audio HD Stacking Kit

Stacking kit for HD Series amplifiers

Item #: 136HDSTKIT

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Build your tower of power with JL Audio's expandable stacking kit for multiple HD Series amplifiers. The kit contains mounting screws that conceal behind your amp's corner caps, and you can stack amps with or without the mounting feet that are included with your HD amp. You'll find enough spacers to stack two HD Series amplifiers and you can purchase a second kit to stack additional amps. Warranty: 30 days

JL Audio HD Stacking Kit Reviews

Average Customer Review:

1 Review


Written by: ALGIE from Virginia on October 4, 2015

Crutchfield Customer Review (What's this?)

Works great!!!



Hands-on research

What's in the box?

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  • Four M4 x 22mm machine screws
  • Four M11 x 30mm spacers

Product Research


Overview: The JL Audio HD Stack Kit provides stacking hardware for two JL Audio HD/MHD amplifiers so they can be placed on top of one another. The HD Stack Kit comes supplied with four 4mm machine screws and four 5/8" spacers. A 3/6" and 1/8" hex-wrench (both included with JL Audio's HD amplifiers) are required for installation.

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Customer Q&A

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Why did you buy this?

To save room and stack my two amplifiers for my boat stereo system. [ Robert  Jan 13, 2016 ]

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