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

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

Marsoni M251S
Sale price$1572.50
Pay 4 payments of $393.12 a month.Shop Pay
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
Easy Shipping

Quick Dispatch:

Your LS3 Medium Bore | Factory Mast | CNC Ported | Cylinder Head - Pair orders ship within 1-2 business days.

Delivery Options:

  • Standard: 3-7 business days
  • Fast: 2-3 business days
  • Express: 1-2 business days

Order Tracking:

You'll receive a tracking link by email once your LS3 Medium Bore | Factory Mast | CNC Ported | Cylinder Head - Pair ships.

Need Help?
Questions about LS3 Medium Bore | Factory Mast | CNC Ported | Cylinder Head - Pair, sizing, or delivery? We're just an email away.

Live Shipping Estimates:
Enter your location at checkout to see available shipping methods and costs for LS3 Medium Bore | Factory Mast | CNC Ported | Cylinder Head - Pair in your area.

Get Shipping Estimates

Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
4.8 ★★★★★
Based on 287 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
V
Verified Purchase
View from the hills
Omaha, US
★★★★★ 5
Enables the person to move around while wearing.
These silicon socks look a bit odd at first glance but they work great and best of all, any lotions and oily creams are contained on the inside so you can walk around. They are very soft. I haven't had them long so I can't comment on durability, but they are not made of lightweight material.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 10, 2026
T
Verified Purchase
Theresa C.
Natrona Heights, US
★★★★★ 5
They Work
Husband struggles with cracking feet, he has tried so many home remedies these work great to keep the moisturizer on and the carpet dry!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 25, 2026
R
Verified Purchase
raymond jones
Battle Creek, US
★★★★★ 1
Not worth the time or money
Never buy these, they causes feet cramps and bad pain even if you use foot pain cream
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 30, 2026
G
Verified Purchase
Greg from MidW
Lake Worth, US
★★★★★ 3
Does the job but dangerous to walk with!
Does the job but dangerous to walk with: foot is sliding inside the sock if the foot was treated with cream or lotion prior. It is uncomfortable to sleep with but a necessary hurdle to heal your heels!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 24, 2025
T
Verified Purchase
Texgurl
Louisville, US
★★★★★ 4
Does the trick
Bought it with urea cream for my senior dad who was diabetes. Careful with it, it will tear
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 6, 2026

recommand products

Weakless (Xbox One, Xbox Series X/S) - Xbox Live Key GLOBAL
Weakless (Xbox One, Xbox Series X/S) - Xbox Live Key GLOBAL
25.89
 Lies of P (PC) - Steam Key EUROPE
Lies of P (PC) - Steam Key EUROPE
39.91
 Into the Belly of the Beast (Xbox One, Xbox Series X/S) - Xbox Live Key GLOBAL
Into the Belly of the Beast (Xbox One, Xbox Series X/S) - Xbox Live Key GLOBAL
17.08
 Assassin's Creed Mirage (Ubisoft Connect, Digital Game Code) Key for PC EUROPE
Assassin's Creed Mirage (Ubisoft Connect, Digital Game Code) Key for PC EUROPE
14.99
 Minecraft: Java & Bedrock Edition (Xbox, Windows) - Xbox Live Key GLOBAL
Minecraft: Java & Bedrock Edition (Xbox, Windows) - Xbox Live Key GLOBAL
19.83