These 650B presta valved tubes (screw top) are replacement tubes for your 650B wheels. Keep a few spares around to be prepared for a flat!
Removable valve core
CALIFORNIA PROPOSITION 65 WARNING: This product can expose you to chemicals including (Cadmium, Phthalates, Bisphenol, Nickel (Metallic), di(2-ethylhexyl)phthalate "DEHP"), which is known to the State of California to cause cancer and/or cause birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.
I'm a fairly new rider, but I'm satisfied with these tubes. I ride a MTB and I got these for my commuter tires. I don't have any complaints, and I plan on getting more of these tubes for my main MTB tires.
Don't be put off by seeing "26 x 1-1/2" as it's the same as 27.5 / 650B / 584MM. These tubes fit great in my 42-584 tires.
Built 650b wheels and had to resort to 26" tubes - pain to mount but otherwise usable. 29" definitely too large - the slack would bunch up. Would be nice to get proper 650b in correcct size but this one will do. Using it with 2.1 tires. Hard to predict reliability yet (it's streched out so who knows).
The tube I received (smaller diameter than I ordered!, not that it matters all that much for tubes) is marked Kenda on the tube itself. As I've used Kenda tubes before (and paid about double for them from lbs), I was pleasantly surprised. Have about 75 all mountain miles on it so far and it's performing as expected. Weight is below average, but that could be size related. Valve is very good.
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