Is the valve core removable so a valve extension can be attached?

I just installed one, the only readily available tube that was close to fitting my ENVE 5.5 wheel, which needs an 80mm stem. The SmarTUBE has a 60mm stem. The valve cores are not removable, so if you need an extension to the stem, it will have to be a harder-to-find Cap or Synchronous external extension. Also, the stem is plastic and not threaded for a retainer nut, so if it is a marginally usable length with your wheel, care must be taken that the stem doesn't get pushed down into the rim when adding air. This one worked for getting home, but will end up as a take along spare, and I will need to find either a removable core TPU tube, or one with an 80mm stem, or stick with butyl or latex tubes.

can this be used on disc brakes?

This is just the tube that goes inside the tire. The brake type does not matter (rim vs disc). You can use it on either.

Can't this be used on a 23mm tire

This may sound counter intuitive but a wider tire would actually reduce your rolling resistance by 10% and using these tubes will help even more. Back on the tires 23 are good but using either 25-28 will be better because you can drop pressure from 124psi on a 23 down to 94psi on a 25 tire.

How do you patch these tubes?

Pirelli (and Schwalbe) TPU tubes can be patched with the TPU-specific patch kit that Tubolito sells. The glue takes 30 min to dry, so don't count on it for a quick roadside repair. The patch is basically a little piece of the same material as the tube. You also need to use an alcohol prep to clean the tube first, a few are included in the kit. Park Tool says their testing showed that their glueless patches would stick to a Schwalbe Aerothan TPU tube. That should hold for Pirelli or Tubolito as well, so I bought some to try but I have not needed to use them yet.

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🚴‍♂️ Elevate your ride with the smartest tube on the road!

PRECISION VALVE - 60mm Presta valve ensures quick, reliable inflation every time.
SPACE SAVING SPARE - Compact design fits easily in your kit—never get caught unprepared.
RIDE LIGHT RIDE SMART - At just 35g, this tube slashes weight for faster, effortless rides.
UNIVERSAL COMPATIBILITY - Works seamlessly with disc and rim brakes for versatile performance.
PUNCTURE PROOF CONFIDENCE - Thermoplastic Polyurethane tech means fewer flats and more miles.

The Pirelli P-Zero Smartube Bicycle inner tube combines cutting-edge TPU material for unmatched puncture resistance with an ultra-lightweight 35g design. Sized for 700x23-32 road bike tires and featuring a 60mm Presta valve, it offers compact convenience and compatibility with both disc and rim brakes, making it the ultimate spare for serious cyclists.

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Bike type	Road Bike
Color	Yellow
Size	700x23-32, 60mm
Style	Flip-Up
Material composition	RUBBER
Weight	454 g
Material type	Thermoplastic
Number of items	1
Outer material	Rubber.
Seasons	Autumn/Holidays
Wheel size	700 Millimetres
Included components	1 x Tube
Batteries included?	No
Brand	Pirelli
Department	Unisex
Manufacturer	Pirelli
Item model number	336006001
Product Dimensions	8.89 x 5.08 x 4.45 cm; 35 g
ASIN	B0975KB3ZB

Pirelli P-Zero Smartube Bicycle

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