- Refillable pouch with fill increments
- Portable pouch fits in a jersey or saddle bag
- Handy valve stem cap with integrated valve remover tool
- Easily cleans up with water
- Slightly pricey both pouch and valves
Price – Sealant: $9.99 (140ml Pouch); $39.99 (1-liter bottle); $153.99 (5-liter bottle); $12.99 (Sealant Kit)
Price – Valves: $27.99/pair
How obtained: Company sample
RBR advertiser: No
PSI: 15-120psi (successfully tested it down to 3.5psi on our fat tires)
Temperature rating: -4F/-20C to 122F/+50C
Stem lengths: 44 and 60mm
Stem colors: Black, Blue, Gold, Green, Orange, Pink, Purple, Red
Making it Easier to Run Tubeless Tires
I’ve been a fan of Muc-Off cleaning and lube products for years. In February, I stopped by the CABDA Midwest booth to see what new products they were promoting. The rep showed me their No Puncture Tubeless sealant and valves. I took a couple of refillable pouches, a one-liter bottle and a couple of valves to test.
Both Mitch and I run our fat bike tubeless, in addition, Mitch has one road bike set up tubeless and a second road bike with tubular tires with sealant for flat protection. I figured we had enough variation in our stable of bikes to test the Muc-Off sealant and valves on four different bikes.
On our recent trip to Tucson we took one of the reusable pouches along. Mitch didn’t have time before we left to replace both tubular tires which were close to end of life and on our second day neither tire held air. Once back at the hotel, he replaced the worst of the two tires and filled both tires with the Muc-Off sealant. As one would expect, the new tire held air. The remaining old tire had a number of slits and small punctures. But once filled with the Muc-Off sealant it sealed and held air for the remainder of our trip.
Back home, the snow had melted, and we swapped our studded fat bike tires for the regular tires. We filled all four tires with Muc-Off sealant and they’ve held air nicely for a few months now.
In all our applications we used the pouch to fill the tire with sealant. It was easy and mess free. We simply removed the valve core and place the pouch opening over the stem. It’s designed to fit snuggly over the stem without leaking. There’s a clear window on the back of the pouch with increments allowing you to install the right amount of sealant. Once you are done installing the sealant, you can reuse the pouch by filling it from the 1-liter bottle. The pouch is also a nice size to stash in you ride bag or jersey pocket should you need to add additional sealant. We found that the sealant cleaned up easily with water. Watch Muc-Off’s short video on using their pouches.
If you purchase the Sealant Kit for $12.99, it comes with a 140ml pouch with sealant, 15ml measuring scoop, UV light and a valve core remover that can attach to your stem. The scoop is used if there’s not a removable valve core. You to measure out the sealant and pour it inside the unseated tire. The UV light is like the one that comes with the Muc-Off chain lube. It highlights the tire punctures or leaks from the sidewalls/valve since the sealant will glow under the UV light.
IMAGES: 15ml scoop, valve core remover and UV light
According to Muc-Off the sealant seals tears and holes up to 6mm, lasts up to 6+ months and wont ball up. It uses microfiber molecules to fill large holes and tears while the latex instantly forms a strong seal. They also state that it is non-corrosive. Ammonia free and CO2 compatible.
The manufacturer recommends the following minimum amount per tire:
- Road: 30-45ml (2-3 scoops)
- 26” MTB, 27.5”, 700c Cross; 60-75ml (4-5 scoops)
- 29” MTB: 105-140ml (7 scoops or the whole pouch)
- Downhill: 120-140ml (8 scoops or the whole pouch)
Note to read the instructions and shake the pouch vigorously so the particles are dispersed throughout the sealant.
Tubeless Valve Stem Kit
Muc-Off not only designed a great tubeless valve, but they also provide the option of 8 different colors to trick out your wheels. They come in two sizes, 44mm and 60mm, which are compatible with road and MTB rims. Each kit comes with everything you need to install on two rims. Both the stem and cap are made from 6061 aluminum and the base of each valve has a 4mm machined Allen Key slot for easy installation/removal. Muc-Off also provides spare alloy cap that doubles as a valve core removal tool. So, no need to carry one in your saddle bag.
Mitch installed the valves on his fat tire rims and they have had zero leaks.
Testing Muc-Off’s No Puncture Hassle Tubeless sealant and Presta valves on both road and fat bike tires provided excellent results. It was easy to install the valves as well as adding sealant with a reusable pouch. The tires held air and sealed any holes or punctures. It especially saved us on our trip from having to purchase a new tire. It sealed all the cuts and punctures just as advertised.
Sheri Rosenbaum regularly contributes articles and reviews products for RBR. She’s an avid recreational roadie who lives in the Chicago area and a major advocate for women's cycling, serving on the board of directors and volunteering with the Dare2tri Paratriathlon Club. Click to read Sheri's full bio or visit her web site sunflowersandpedals.com.