Pirelli P Zero SmarTUBE RS Size:60mm Valve Each cassette is built on

Each cassette is built on two blocks

Bottom bracket shell width: 77mm

its holding power is excellent under any circumstance

we have transitioned from rim failures to tire failures

Pirelli P Zero SmarTUBE RS Size:60mm Valve Each cassette is built onThe Pirelli P Zero SmarTUBE RS is a lightweight TPU inner tube from Pirelli, designed to shave rolling resistance and weight from your setup without compromising reliability. Key Features TPU (Thermoplastic Polyurethane) construction far lighter and more compact than standard butyl, with comparable puncture resistance Up to 1. 5 watts more speed thanks to reduced rolling resistance Manufacturer claimed weight: 33g, 34g Why Choose the Pirelli P Zero