Airstop® Butyl tubes answer the needs of everyday cyclists for economical, high quality inner tubes. In each size, Airstop Butyl tubes offer excellent puncture resistance and the consistently high quality for which Michelin is famous.
PLEASE NOTE: 18-25c for stock 63726
Valve Type: A1 - unthreaded
40mm presta valve - 96g
52mm presta valve -98g
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Rated 5 out of 5 by RickB Very Good Tubes
Very good tubes, at a great price. No punctures as of yet.
17 September 2014
Rated 5 out of 5 by angryadam1 good pressure retention light
upgraded to these to get better pressure retention. all good work well and no problems so far loose far less pressure than average tubes. perhaps a tad expensive but worth it
16 September 2014
Rated 5 out of 5 by ChickenT High quality, Zero duds
Unlike some other tubes, I've never found a dud one (this is painful to discover on the road, thank you very much conti supersonic). light weight, but not super light, does the job.
I also like these because the valve end is not un-screwable. I've had other tubes unscrew when inflating, never with these
14 September 2014
Rated 5 out of 5 by Troika3 They do the job
What can I say? I bought these cause I needed spare tubes and these were the best price.
05 September 2014
Rated 5 out of 5 by Mcdoobious It's a tube.
it's an inner tube what more can I say, had no problems with them.
01 September 2014
Rated 4 out of 5 by Zheny обычная камера
ничего особенного. Можно использовать, но континенталь мне нравится больше. Субъективно.
31 August 2014
Rated 4 out of 5 by Eddiefromdublin good value
I have found this tube to be very good and easy to repair if you repair tubes
11 August 2014
Rated 3 out of 5 by KasperC Decent tube for the price
I have bought three of these tubes. So far I have had no punctures, but I have had one tube fail. The tube developed a hole near the valve on the side of the tube facing the rim. I checked for foreign objects and defects on the rim which could have caused the hole but found nothing.
The hole developed literally over night. Rode the bike home one evening with no problem and the next morning it could no longer hold any air. It would deflate faster than I could disconnect the pump from the valve.
From other reviews of the tube it does not seem to be an isolated incident as others have mentioned having a similar failure.
A try at sealing the hole with a patch failed and I switched the tube all together. The old tube failed after about 2 months of use at 140 psi.
I have little experience with high pressure tires regarding how well they should hold air. My experience with these tubes are that they go from 140 psi to 110-120 psi over 2 to 3 weeks. They seem to no longer loose pressure once they reach 70-80 psi.
I find the value and quality to be average because the tubes are cheap and I have only had problems with one out of three as of yet. The faulty one might just have been a lemon. Yet a failure with no apparent cause detracts a lot on the value part as well as the quality. If the tubes are cheap but fail fast the value will fall.
14 July 2014