Muc-Off has released tire insert compatible tubeless valves. These are their second generation tubeless valves, now made from a lighter, stronger aluminium. The rim-side is shaped specifically to allow air and sealant to flow freely into the tire even when you’ve got a tight tire insert installed. Here’s more.

Muc-Off V2 Tubeless Valves

mucoff v2 tubeless valves for mtb tire inserts gravel

First, why?

Regular tubeless valves simply don’t work with the vast majority of tire inserts on the market. CushCore, Nukeproof, and Rimpact are examples of tire insert manufacturers who actually supply tire insert-specific valves with the sale of every insert.

How are Muc-Off Tubeless Valves different?

mucoff v2 tubeless valves for tire inserts

On the outside of the rim, they are the same as any other tubeless valve; it’s on the inside of the rim where the functional difference exists. Generally speaking, they have holes or channels that allow air and sealant to flow laterally out the sides of the valve, rather than out the bottom of the valve where the tire insert is pressed firmly.

mucoff v2 tubeless valves machined shape six slots

The new Muc-Off V2 Tubeless Valves address this flaw of their original tubeless valves with a new shape. There are now six channels that flow laterally away from the central portion of the valve; this will allow riders to top up with tire sealant without having to drop the bead, using an injector such as the KOM Cycling Sealant Injector.

mucoff v2 tubeless valves sealant flow lateral tire insert compatible

What else is new? The original Muc-Off Tubeless Valves were made from 6061 aluminium. The V2 valves are upgraded to aircraft grade 7075 aluminium, a lighter and stronger option. It may seem a bit ridiculous to talk about the strength of a tubeless valve. But, only last week the valve on a friend’s rear wheel was completely sheared off by an unfortunate rock strike, leaving her with a long walk home.

Pricing & Availability

mucoff v2 tubeless valves mtb

Pick up the Muc-Off V2 Tubeless Valves for $29.99 per pair, available in no fewer than ten colorways and 44mm, 60mm and 80mm lengths.


  1. Chris on

    Better check out the latest tubeless valve stems from Machined from SOLID BAR and also available in 3 lengths, including delivery for only US$19.99 pair! I bought some and they’re brilliant! Muc-Off are $35 (+ delivery?).

  2. alloycowboy on

    I have to give Muc-Off some serious accolades for their tubeless valve design. I use to have to pump my tires up before every ride when I was using NT valves but now I can go a full two weeks with the Muc-Off valves. So I am pretty stocked that they improved them even further.

  3. B-Man on

    Why don’t they make a Schrader version? It’s easier to flow in sealant and any gas station and my garage compressor can inflate it with a standard air chuck. The whole Presta tradition needs to fade away…
    My solution, which I admit is a bit wasteful, is so cheap. A continental 20, 26 or 29 tube with a threaded Schrader valve to about $5-$6. Cut away most of the tube and you are left with a very nice valve stem. I use some of the wasted tube as rubber bands.

    • whatever on

      One of the main reasons to use a Presta valve is that it’s thinner, therefore requiring a small whole to be drilled into the rim. Smaller whole means a stronger rim, especially on the very narrow rims for the past of road bikes and rims being built so close to the failure point so as to be as light as possible. Obviously not as critical now on wider rimmed mountain bikes, but consider that the larger whole will mean slightly more flex at the point in the rim. More flex mean sooner failure on alloy rims since alloy has a cumulative stress from flexing. But really, probable the main reason is that Presta is what most everyone is geared to already. You reduce your potential market otherwise.

  4. B-Man on

    Part-2 I’ve done this with old-school mountain bike rims which are 21mm on the inside and it works. I’m a weight-weenie and the extra 2 grams are easy to live with.

  5. Jon on

    I have the KOM syringe kit and it fits fine through both my Muc Off stems and my neighbor’s Bontrager OEM stems. What valves are you running and what’s their ID? Perhaps the KOM kit tubing changed size at some point in their run? My kit is looks like nominal 0.125″ OD tubing and measures about 0.123″ max OD


COMMENT HERE: (For best results, log in through Wordpress or your social media account. Anonymous/fake email comments may be unapproved or deleted. ALL first-time commenter's posts are held for moderation. Check our Comment Policy for full details.)

This site uses Akismet to reduce spam. Learn how your comment data is processed.