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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Description

🚴‍♂️ Ride Light, Ride Fast, Ride Smart with Pirelli SmarTube!

SLEEK STYLISH DESIGN - Yellow tube with black valve adds a bold, modern touch to your bike setup.
PRECISION VALVE CONTROL - 60mm Presta valve offers easy inflation and secure fit for professional-grade performance.
FEATHERLIGHT SPEED BOOST - At just 35 grams, experience lightning-fast acceleration without the bulk.
TAILORED TIRE COMPATIBILITY - Fits tire widths from 23 to 32mm, ensuring a perfect match for your ride.
REVOLUTIONARY TPU CONSTRUCTION - Thermoplastic rubber delivers durability and flexibility for the ultimate cycling evolution.

The Pirelli P Zero™ SmarTUBE is a professional-grade, ultra-lightweight (35g) bicycle tube designed for 700C wheels with tire widths between 23-32mm. Featuring a durable thermoplastic rubber construction and a 60mm Presta valve, it offers precision inflation and a sleek, stylish design that enhances both performance and aesthetics for serious cyclists.

Specifications

Brand	Pirelli
Valve Type	Presta
Material	Thermoplastic Rubber
Wheel Size	29 Inches
Item Diameter	70 Centimeters
Item Width	23 Millimeters
UPC	601479125722
Compatible Tire Width Minimum	23 Millimeters
Valve Length	48 Millimeters
Global Trade Identification Number	08019227409437
Item Weight	35 Grams
Manufacturer	Pirelli
Size	700 x 23 - 32mm, 60mm Presta Valve
Compatible Tire Width Maximum	32 Millimeters
Item Package Dimensions L x W x H	3.62 x 2.05 x 1.85 inches
Package Weight	0.05 Kilograms
Item Dimensions LxWxH	3.5 x 2 x 1.75 inches
Brand Name	Pirelli
Warranty Description	Limited Warranty
Model Name	SmarTube
Color	yellow with black valve
Suggested Users	Adult
Number of Items	1
Part Number	4094300
Model Year	2022
Style	Flip-up
Included Components	item
Outer Material	Rubber.

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