Reviews of Q-Tubes 18 x 1-3/8" 32mm Presta Valve Tube
your price $6.50Watch PART NUM 705953
Great Tube and no puncture yet
Ride this every day to work and have not had any flats which is pretty amazing
Assuming that this is not the lightest tube in the world, but who cares.
i like presta valves
these tubes have kept their air pressure and... no blowouts or flats
I put in 80 miles a week over NYC streets and avenues,,, these tubes have performed to a degree that gives me great confidence in them,,,
Good quality tubes,5-$8 instead of $20 for skinny tubes with PrestaShop valves.
Features (thorn-resistant, removable presta valve core)
Very poor reliability
After more than 500 miles of trouble-free riding on- and off-road with factory-installed standard tubes on our new Cannondale Quick CX2 bikes, I decided my wife and I were pushing our luck and purchased four Q-tubes to "upgrade" to thorn-resistant tubes with removable valve cores. During our first ride after installing the Q-tubes, the front tire on my bike suffered a fast flat (fully deflated in under 5 seconds) with less than two miles of use. The failure was determined to be caused by separation between the rubber and valve stem (I have a picture but couldn't find a way to include it with this review). I contacted Modern Bike about the problem and received outstanding support. We concluded that premature failure was most likely a fluke and a replacement tube was provided free of charge. Unfortunately, my rear tire then went flat after about 25 miles of riding, and that flat was also caused by exactly the same failure mode: The rubber separated from the valve stem. With a 50% failure rate with the exact same failure mode, I completely lost my confidence in the Q-tubes product.
Nice product & good price
Very nice product! I couldn’t find it anywhere else find it here and wasn’t sure what it will look like. I’m really excited that it’s exactly what I wanted. I also appreciated your promptness in shipping my package it almost arrived a little bit earlier than expected. Nice quality I highly recommend this product for anybody home and Nice quality I highly recommend this product for anybody home and sleep who needs it. Believe me you will never be disappointed with this product! Check it out!
I will need this exact same inner tube very soon for my other tire please keep supplying it in stock !
Using these tubes in Fat Bike
Using these tubes in 26x4.4” fat bike tires for general trail use. I weigh about 200 lbs. I have had no issue with them and highly recommend if you want lighten up rotational weight, but still want to use tubes. Or even just these as a spare versus heavier tube
Just what I needed to convert 26” fatbike to split tube tubeless
split tube on fatbike
So far so good for doing split tube "tubeless" on 95mm fat rims. I'd say I have about 3/4 to an inch of extra on either side that I'm too lazy to trim off.
Didn't magically convert my chaoyang cruisers into a surly bud/lou combo. :(
Good price point
Great quality and quick replacement,
26" fat bike usable
These tubes are now in my 4" tires for 3 weeks of rocks and roots riding. They weigh less and work just fine.
I only wish my old girlfriend wasn't such a slut.
As expected - thank you!
Q-Tube 26 x 1.25 48mm Presta Valve Tube
Spare tubes for Catrike Expedition.
Fat Bike split tube
I use this only for a split tube set up on a fat bike. Works great for my application.
Worked great for a fat bike tubeless conversion.
Quick Delivery / Item Exactly As Described
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