Question 1

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

Accepted Answer

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.

Question 2

can this be used on disc brakes?

Accepted Answer

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.

Question 3

Can't this be used  on a 23mm tire

Accepted Answer

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.

Question 4

How do you patch these tubes?

Accepted Answer

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.

ASIN	B0975KB3ZB
Amazon 売れ筋ランキング	スポーツ＆アウトドア - 78,740位 ( スポーツ＆アウトドアの売れ筋ランキングを見る ) 自転車用タイヤチューブ - 451位
GTIN (Global Trade Identification Number)	08019227409437
UPC	601479125722
おすすめ度	4.2 5つ星のうち4.2 (478) var
サイズ	700 x 23-32 mm
バイクのタイプ	ロードバイク
バルブタイプ	プレスタ
バルブ長	60 ミリメートル
ブランド名	PIRELLI(ピレリ)
ホイールサイズ	700 ミリメートル
メーカー名	Pirelli
メーカー型番	4094300
ユニット数	1.0 個
付属コンポーネント	本体のみ
保証の説明	なし
品番・型番	336006001
品目の幅	23 ミリメートル
商品の重量	35 グラム
商品種別	自転車用チューブ
直径	700 ミリメートル
素材	熱可塑性ゴム。
適合タイヤの最大幅	32 ミリメートル
適合タイヤの最小幅	23 ミリメートル

PIRELLI(ピレリ) P ZERO SMARTUBE(Pゼロスマートチューブ)700x23-32C 仏式60mm | 自転車用チューブ。

Details

Details

Description

Specifications

Common Questions

PIRELLI(ピレリ) P ZERO SMARTUBE(Pゼロ スマートチューブ)700x23-32C 仏式60mm | 自転車用チューブ。

Details

Details

Description

Specifications

Common Questions

PIRELLI(ピレリ) P ZERO SMARTUBE(Pゼロスマートチューブ)700x23-32C 仏式60mm | 自転車用チューブ。