Continental Conti Valve Extender (Pack of 2)

Works great with my carbon wheelset. Especially a good decision if you have a set of tubulars that dont have exchangeable stems.

I expected them to fit a standard valve stem, but they are some strange small extenders. Length was fine, but I have standard valve stems. Not worth returning them.T

Originally, I just tried screwing one of these puppies over the presta valve of a tire on an aero wheel, but that didnt work well at all. Prepared to award this seemingly miserable product a single star and a nasty review, I happened to glance at the DIRECTIONS, and realized the valve was to be disassembled BEFORE attaching the extender, and that the black plastic piece in the packaging was a wrench intended to accomplish this very purpose, and not, as I initially perceived, a roach clip misplaced by a Continental or Amazon employee. This is a great product that works wonderfully, even if the wrench looks like a piece of drug paraphernalia.

I installed these because I have 88mm deep carbon fiber wheels. There is absolutely no air leak, just make sure you use teflon sealer tape. I have used 60mm length version with 80mm valve inner tube but I could use the size smaller I guess (40mm) , but it is ok.

Spendy, and I wish they came in black, but crucially, these worked, whereas the cheaper no-name brand did not.

Just what I wanted. Needed 48mm removable valve core tubes to clear my 88mm Carbon wheelset. Done forget to use Teflon tape for added piece of mind.

These are the valve extenders to get. Works perfectly, and light weight as well.

Conti quality. Unlike other reviewers, I did not have any issues with getting them securely attached and with no leaking. Another brand required pipe dope to keep from leaking, these did not. I use them with Conti tubes, so maybe that’s the reason they work well. They do the job they were designed to do.

They leak. Oh my, now I have a problem. Used them with new Veloflex Roubaix. Sure, everything fit. I even used plumbers tape around the threads for a better seal. But they leak a lot of air. And this is a real pain in the butt because now my tubulars are held down with glue tape. Ill be out $50 if I need to entirely remove the extender and replace with a new one.

If you need valve extenders, these are the ones to get. Note that they do require removing the valve core, so be sure that your tires/tubes are compatible.