
ILL Customz offers premium, American-made products custom engineered to elevate your car audio experience to the next level. Calvin, founder of ILL Customz Metalworks is a basshead and car audio enthusiast. He believes in putting the customer first, always. From Ill Customz's high-quality products and competitive prices to our community-inspired designs and meme-packed newsletter, we never cut corners in delivering a top-notch experience to our loyal fans.
WHAT ILL CUSTOMZ CUSTOMERS ARE SAYING
"Ordered my first product and ordered more as soon as they came in. Amazing quality at a great price. Not to mention the best service and fastest shipping" - David Pinney
"EXCELLENT quality and prices here! I was very happy when I measured the tolerances these guys observe with each product. Consistency matters to me greatly when it comes to my personal install. These are precise down to the millimeter every time. I simply refuse to purchase machined parts from anyone else. I love these guys!" - Stan Lee
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Add to cartQuick ViewAmp Inputs/Gauge Reducers, Ill Customz
ILL Customz Dual 1/0 to Single 1/0 Inputs
$16.99-
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Add to cartQuick ViewAmp Inputs/Gauge Reducers, Ill Customz
ILL Customz Taramps MD Dual 1/0 to Single 1/0 Inputs
$24.99-
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B-STOCKAdd to cartQuick ViewBattery Terminals, Ill Customz, Open Box/B-Stock/Used
ILL Customz Bolt Down Battery Terminals – 6 Input – B-STOCK
$24.00-
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Add to cartQuick ViewAmp Inputs/Gauge Reducers, Ill Customz
ILL Customz Single 4ga to 4ga Inputs
$12.99-
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Add to cartQuick ViewBattery Terminals, Ill Customz
ILL Customz SAE 4 0ga Input Battery Terminals
$32.99-
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Add to cartQuick ViewAmp Inputs/Gauge Reducers, Ill Customz
ILL Customz 4ga to 8ga Reducers
$12.99-
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B-STOCKAdd to cartQuick ViewBattery Terminals, Ill Customz, Open Box/B-Stock/Used
ILL Customz SAE 4 0ga Input Battery Terminals – B-STOCK
$31.50-
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B-STOCKAdd to cartQuick ViewBattery Terminals, Ill Customz, Open Box/B-Stock/Used
ILL Customz Bolt Down 6 Lug Battery Terminals – B-STOCK
$18.99-
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Add to cartQuick ViewAmp Inputs/Gauge Reducers, Ill Customz
ILL Customz Dual 1/0 to Single 4ga Inputs
$22.99-
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Add to cartQuick ViewBattery Terminals, Ill Customz
ILL Customz Bolt Down 6 0ga Input Battery Terminals
$33.00-
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Add to cartQuick ViewAmp Inputs/Gauge Reducers, Ill Customz
ILL Customz Angled 1/0 to 4ga Inputs
$17.00-
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Add to cartQuick ViewBattery Terminals, Ill Customz
ILL Customz SAE 6 0ga Input Battery Terminals
$34.99-
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Add to cartQuick ViewHeat Shrink/Connectors, Ill Customz
ILL Customz 4ga Tinned Copper Lugs – 10 Pack
$8.00-
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Add to cartQuick ViewBattery Terminals, Ill Customz
ILL Customz SAE 8 0ga Input Battery Terminals
$49.00-
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ILL Customz Black 1/0ga Heat Shrink
$3.95 – $44.95-
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B-STOCKAdd to cartQuick ViewBattery Terminals, Ill Customz, Open Box/B-Stock/Used
ILL Customz SAE 6 0ga Input Battery Terminals – Old Stock
$29.99-
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Select optionsQuick ViewHeat Shrink/Connectors, Ill Customz
ILL Customz 4ga Heat Shrink (Old Logo) – 10 Pack
$5.50-
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