Skip to content

WTB TCS AL Max-Flow Black Presta Valve

Marsoni M251S
Sale price$49.90
Pay 4 payments of $12.47 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
WTB TCS AL Max-Flow Black Presta ValveTCS Max Flow Tubeless Valves feature an insert compatible base, increased bore diameter, an integrated valve core remover, and an ergonomically designed nut that allows riders to properly tighten down the valve without the use of a tool. TCS Max Flow Tubeless Valves feature a castellated base for multi directional air flow out the sides, therefore preventing the airflow restriction that can happen when a tire insert is pushed up against a traditional
Easy Shipping

Quick Dispatch:

Your WTB TCS AL Max-Flow Black Presta Valve 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 WTB TCS AL Max-Flow Black Presta Valve ships.

Need Help?
Questions about WTB TCS AL Max-Flow Black Presta Valve, 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 WTB TCS AL Max-Flow Black Presta Valve 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
4.9 ★★★★★
Based on 736 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
M
Verified Purchase
Morstead
Pawtucket, US
★★★★★ 5
Comfortable & well-fitting, but some differences in stiffness between batches
Size: Medium, Color: Black/Deep Blue/Deep Grey/Heather Grey
I've basically been exclusively buying these since I've discovered them. Super-comfortable and maintain their shape for a long time, but I've noticed from buying it multiple times that sometimes the pouch area has stiffer texture and more support than other times (when it's loose & stretchy like the rest of it). I wish I could specify receiving the more-supported ones because they tend to produce less....how to say, knocking the boys around.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 22, 2026
E
Verified Purchase
EclecticJay
Belleville, US
★★★★★ 5
Comfort and softness
Size: 3X-Large, Color: Black/Navy/Dark Grey/Red
True to size; they are comfortable, good quality, and really soft.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 3, 2026
J
Verified Purchase
James
Los Angeles, US
★★★★★ 5
Look great, feel great
Size: Large, Color: Black
These feel great and fit well. With most briefs I tend to the trouble either keeping the front in or not having the back cover everything but these do both things and are very soft. They also look great, even on body types not in the promo picture. They are a great set of briefs and have held up so far and I got mine a little around a year ago and wear them often.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 26, 2025
G
Verified Purchase
garlic brad
Charlottesville, US
★★★★★ 4
Comfortable, but run big
Size: Small, Color: Red/Orange/Yellow/Blue
I'm a small guy and I purchased size small. The underwear are not bad. Great if you're a bigger guy or if you have a really big butt. If you're on the smaller side or skinnier though they'll fit a little loose. My butt is pretty big, but it doesn't fill out the back completely. Very comfortable though and the waist fits fine. Just a big backside. They don't ride up and so far they're durable. No fading in color and the material holds strong after many wears and washes.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 24, 2026
S
Verified Purchase
shaik
Lake Worth, US
★★★★★ 5
Value. Fabric quality.
Size: Large, Color: Black/Navy/Dark Grey/Red
Better than I expected. Great fabric. Perfect fit. This is the most satisfying buy that I ever did. For this price!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 14, 2026

recommand products