Michelin Protek Max 700c Inner Tube (Presta) (32 - 42mm) (40mm) (Self-Sealing)

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Michelin Protek Max 700c Inner Tube (Presta) (32 - 42mm) (40mm)
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Michelin Protek Max Inner Tubes feature a proprietary shape and construction that is extremely resistant to punctures.


  • Contains liquid sealant that immediately closes small punctures to prevent air loss
  • Excellent air pressure retention
  • Square shape retains shape better and resists twisting during installation
  • Excellent air pressure retention

Diameter: 700c
ISO Diameter (ETRTO): 622
Valve Type: Presta
Valve Length: 40mm
Removable Valve Core: Yes
Puncture Protection: Yes
Weight: -

This product was added to our catalog on March 5, 2019

Verified Owner
Tuesday, May 14 2024 (5 weeks ago)
Michelin Protek Max 700c Inner Tube (Presta) (32 - 42mm) (40mm)
Tubes are pretty thick and the contoured shape should work to close small holes.

Valves don't seal unless you really torque them shut, maybe residue in the stem?

Failed on first ride and first thorn, held for a bit but after taking a rest stop but I came back to a flat tire. Didn't seem to be any slime in the tube, nothing trying to seal it up after I pulled the thorn.

I removed the core and there was some black residue, seemed pretty dry, I'll try to reload it and see what happens.
Mitchell Anderson
Verified Owner
Tuesday, Aug 3 2021 (about 2 years ago)
Michelin Protek Max 700c Inner Tube (Presta) (32 - 42mm) (40mm)
valve core failed and will not seal (tire went flat during ride) on 1 of 2 tubes purchased.