ZEX Nitrous System ZEX Race EFI

Marsoni

M251S

$360.98

Get it in 3 business days with 1 day shipping. Friday, May 29

ZEX Nitrous System ZEX Race EFIZEX Blackout Nitrous Systems are the newest addition tothe ZEX family. With unprecedented looks, performanceand power potential, and like all ZEX nitrous systems, theBlackout kits incorporate the most technologicallyadvanced performance features available, including thepatented ZEX Active Fuel Control. This feature automaticallyadjusts the nitrous fuel enrichment so your enginenever runs too rich or too lean. Power settings vary for eachapplication

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We offer a 30-day return/exchange service after receiving.
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No complaints on these. They fit great, are supportive cotton, and look great. I was so used to the cheap Wal-Mart-bought fruit of the loom (think) ankle socks that I had no idea what I was missing. These are thicker, made better, and feel great. They even support the back of your foot from riding against your shoes. Because they are a bit thicker, they do make my feet hotter than before...but I've adjusted the shoe I wear to allow more breathability and don't wear them for long periods anyway. I live in Texas...we wear flip flops most of the year round. :)

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Reviewed in the United States on June 1, 2020

Verified Purchase

Dave Saladin

Charlottesville, US

★★★★★ 5

Love Underarmour!

Size: Large, Color: White (6-pairs)

Why did you pick this product vs others?: Love underarmour products! Very comfortable. Love them for golf season.

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Reviewed in the United States on June 18, 2025

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Local egg dealer

Draper, US

★★★★★ 4

Run large

Size: Large, Color: White/Gray (6 Pairs)

They seemed larger than the last time I ordered. I should have ordered medium

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Reviewed in the United States on March 14, 2025

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Mario

Omaha, US

★★★★★ 5

Love these socks! They are absorptive, comfortable, supportive, attractive & great fitting!

Size: Medium, Color: White/Gray (6 Pairs)

These have been my go-to socks for almost 8 years now. I love that they are cotton, so they absorb sweat rather than give you that slimy feel you can get from polyester. They have great support in the mid foot and fit great due to the sizing. Just the right amount of padding and exhibiting an attractive low cut below the ankles. I highly recommend these socks. I hope this is helpful.

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Reviewed in the United States on October 18, 2022

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Amazon Customer

West Palm Beach, US

★★★★★ 5

They are socks

Size: Large, Color: White (6-pairs)

It’s UA and they’re socks. They go on your feet and stay there.

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Reviewed in the United States on June 28, 2025