Skip to content

Radium Engineering FCST-X Fill Neck Block-Off Kit

Marsoni M251S
Sale price$18.95
Pay 4 payments of $4.74 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
Radium Engineering FCST-X Fill Neck Block-Off KitSKU: 20 1060 FCST X Fill Neck Block Off Kit This kit blocks off the filler hole on the Radium FCST X units. Included: Anodized 1 8in (3mm) Aluminum Plate FKM O ring Gasket Seal Stainless Steel Hardware RADIUM Engineering, LLC Since 2010, Radium Engineering's goal has been to simply design and produce high quality aftermarket automotive performance products. Radium Engineering relies on a core team with a passion for innovation to lead the company
Easy Shipping

Quick Dispatch:

Your Radium Engineering FCST-X Fill Neck Block-Off Kit 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 Radium Engineering FCST-X Fill Neck Block-Off Kit ships.

Need Help?
Questions about Radium Engineering FCST-X Fill Neck Block-Off Kit, 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 Radium Engineering FCST-X Fill Neck Block-Off Kit 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
4.2 ★★★★★
Based on 833 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
A
Verified Purchase
amazonfan
Chelsea, US
★★★★★ 4
I wanted to love these....
Size: 8, Color: Sand
I really wanted to love these, and I *almost* did. They are comfortable and cute. But they are a little wide across the mid-foot so they were a little sloppy on my feet. The platform is quite high, and while at 5'3" I appreciated the extra height, between that and being too wide, I felt they were an accident waiting to happen. If they were slightly more narrow and a little lower, I would have been in love, but I had to return them. They seem true to size except for the extra width.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 10, 2026
M
Verified Purchase
Mur
Grantham, US
★★★★★ 5
Comfort in a Slide
Size: 7.5, Color: Black
These are true to size and extremely comfortable. I prefer the extra height that they provide and the quality is 10/10. I would purchase in another color and highly recommend them if you’re looking for these attributes in a slide.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 25, 2026
M
Verified Purchase
Melissa Lynne
Natrona Heights, US
★★★★★ 5
Gorgeous shoes, worth the price, totally comfortable!
Size: 8, Color: Black
These are so comfortable! They fit perfect, the suede is really soft and the foot bed has a lot of cushion. They fit very true to size, I got a size 8,
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 4, 2026
K
Verified Purchase
Karey Gray
Houston, US
★★★★★ 5
Terrific sandal for comfort and adding height!
Size: 7, Color: Dark Chestnut
Very comfortable. I have trouble with heel pain and these sandals are terrific! They are well made - good quality. The brown color is exactly as shown. I would recommend.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 8, 2026
V
Verified Purchase
Vanessa Maciel
New York, US
★★★★★ 5
great product
Size: 8, Color: Black
love cute and comfy
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 12, 2026

recommand products