LS3 Medium Bore | Factory Mast | CNC Ported | Cylinder Head - Pair

LS3 Medium Bore | Factory Mast | CNC Ported | Cylinder Head - Pair

Marsoni

M251S

$1572.50

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

LS3 Medium Bore | Factory Mast | CNC Ported | Cylinder Head - PairWe took the Factory Mast LS3 and CNC ported it for even more improvement. Our Factory Mast Cylinder Head starts out with our "as cast" port which we now offer a CNC port for more airflow. This allows for an additional option and price point over our As Cast Port version and our Premium Black Label LS3. ***Download your Cylinder Head Technical Sheet here*** We launched our Factory Mast product line to deliver an economical product line for our

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Exchange/Return Notes

We offer a 30-day return/exchange service after receiving.
Final sale items are not eligible for returns or exchanges.
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I absolutely love these things. But the first time I put them on in the living room. The walk to my bedroom was VERY interesting 😂😂😂 I now know I need to put them on and hang out for a bit, or simply go to bed. They do exactly what I need them to do. Feet feel great afterwards! With the right lotion, only need to use one every couple of weeks.

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Reviewed in the United States on January 10, 2025

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Marti

Waukegan, US

★★★★★ 5

Transformed my feet

Flavor Name: XL silicone socks 2 pairs

After trying several other brands that actually my size did not have the luxury feeling of these. T although x large they have the BEST feel and function. I put lotion on then slip them on and within a few minutes my dry cracked heals are soft. Really a nice product.

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Reviewed in the United States on July 24, 2024

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Tina Taylor

Belleville, US

★★★★★ 3

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Reviewed in the United States on March 6, 2026

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Savanna

Pawtucket, US

★★★★★ 5

Sparkly good value for money

Color: Silver

Very pretty and sparkly. Use lotion before hand and it sticks even better.

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Reviewed in the United States on December 31, 2025

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Barbarilla

Los Angeles, US

★★★★★ 5

Extra fine glitter

Color: Gold

Extremely fine. I plan on adding it to my spf body oil. Hoping it doesn’t clog the line but I absolutely love this! The pump is so cute. I love that it’s glass. I know there are cuter ones online so you could just get this for the glitter and put it into another one that’s more ornate. It’s just so much fun. Buy it now

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Reviewed in the United States on July 19, 2025