Skip to content

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
4.1 ★★★★★
Based on 561 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
K
Verified Purchase
kelly
Charlottesville, US
★★★★★ 5
Puppy Says YUM
Flavor Name: Duck & Veggies, Size: 5 Ounce (Pack of 1)
My girl loves these, and they fit most of the treat dispensing toys we have. Perfect for quick training treats too!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 11, 2025
M
Verified Purchase
Megan Mangini
Bozeman, US
★★★★★ 5
Perfection!
Flavor Name: Duck & Veggies, Size: 5 Ounce (Pack of 1)
Wonderful treat. My pups go wild and bounce around with pure joy. I have to hide the bag because these two figured out a whole MacGyver plot to snag them when I wasn’t looking. Cheeky little boys.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 8, 2025
R
Verified Purchase
RedMan
Fort Morgan, US
★★★★★ 4
Great for training or even a special treat just because.
Flavor Name: Duck & Veggies, Size: 5 Ounce (Pack of 1)
Odin loves them.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 30, 2025
S
Verified Purchase
stephanie smith
Belleville, US
★★★★★ 5
Best treats!
Flavor Name: Duck & Veggies, Size: 5 Ounce (Pack of 1)
My pup loved the cheese and also the chicken but not the duck and veggie
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 15, 2025
D
Verified Purchase
Debby B
Whiting, US
★★★★★ 5
good training treats
Flavor Name: Duck & Veggies, Size: 5 Ounce (Pack of 1)
i repeatedly buy all flavors of this brands training treats..my doodle has liked all of them
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 29, 2025

recommand products