i72 Tubeless Valve Stems 40mm Presta Pair - Brass Made with Core Remover Tool, Round Rubber Base with O-Ring for Better Sealing

Not much to report. I screwed these valves in, put some sealant into the bottom of the tire, seated it on the rim a little bit, compressor on, et voila, I am riding tubeless (with tubeless-ready wheels, of course). No leaks from the valves or anywhere else after 2 weeks.

Converted my Rockhopper rims to tubeless and these seated well and havent leaked at all so far. Easy to install, arrived on time, no complaints. Cant comment on durability yet but so far Im happy.

These valve stems do not work with the Shimano rims so they were useless to me.

These mounted easily and had no leak issues at all.

Perfectas para mis ruedas

Seated and held air with no issue at all on my Bontrager wheel set. Works as expected.

They are very easy to install and I like the o-ring on the outside but to lock it in place

Used to replace a damaged valve stem on a wheel with a 2 year old tape job. Wheels held air on the first try, no problem. I didnt use the extra o-ring, but I did dip the rubber end in some sealant before installing, which always helps.

I used a pair of i72 Tubeless 40mm Presta Valve Stems to convert my MTB to tubeless. The rims I converted were not tubeless ready & had schrader to presta valve hole adapters. These adapters are like “collars” that fit into the holes that are sized for schrader valves & have a split in them to allow for compression/expansion when installing. This split allows for a massive air leak. These valves, along w/2 layers of Stan’s rim tape & Stan’s NoTube sealant, successfully sealed & converted my MTB to a tubeless setup. The valves came w/their securing nut & o-rings. These tightened down & seated securely. The cores looked & functioned properly, no issue w/removal, installation, opening or closing. Both my pump & gauge also worked w/the valves properly. I have not had any issues w/them gumming up or sticking because of the sealant. Overall, I am very satisfied w/how these valves have been functioning. Thank you for taking the time to read my review, I hope you found it helpful.

These are working very well in my WTB i35 tubeless 2.8 set up, the rubber O-rings are a plus to get that extra seal.