Schrader TR Airlock Tube

The Specialized Airlock tube features a dual-wall construction with a thicker outer layer to deflect thorns and debris, paired with a thinner inner layer to keep the weight down. It also comes pre-filled with Airlock sealant, which automatically seals small punctures while you ride.

This tube is compatible with a range of sizes, including 20 x 1.5-2.3, 26 x 1.75-2.4, 29 x 1.75-2.4, and 700 x 28-38c. Please double-check the sidewall of your current tire to ensure your specific size falls within these ranges.

While the Airlock sealant is designed for long-term use, all sealants eventually lose effectiveness. You can expect the sealant to provide reliable protection for the typical lifespan of the tube, but it is not designed to be refilled once it dries out.

No, this tube uses a Schrader valve, which is wider than a Presta valve. It will only fit rims that are drilled for Schrader valves.

The tube uses a dual-wall design specifically to balance protection and performance. By keeping the inner wall thinner, Specialized minimizes the rotational weight, so you get the puncture resistance of a heavy-duty tube without a significant penalty in ride quality.