Continental Supersonic Tube - 700 x 20 - 25mm 42mm Presta Valve MFPN=20494 Beat your time against the

Beat your time against the clock with Michelin Power Time Trial tire

5mm to 27mm

5 hours on High 5 hours on Low 14 hours on Flash

Engineered manufactured and assembled in Portland Oregon USA

Prevents corrosion between spoke and nipple

Continental Supersonic Tube - 700 x 20 - 25mm 42mm Presta Valve MFPN=20494 Beat your time against theContinental Supersonic Tube 700 x 20 25mm 42mm Presta Valve. Continental Supersonic tubes give racers the option of lower rotating weight therefore increasing speed. TECH SPECS ISO Diameter 622 Road 29" ISO Width (mm) 18 ISO Width (mm) 19 ISO Width (mm) 20 ISO Width (mm) 21 ISO Width (mm) 22 ISO Width (mm) 23 ISO Width (mm) 24 ISO Width (mm) 25 Labeled Size 700 x 18 25 Shaft Type Threaded Valve Presta Med 41 55mm Valve Core Removable Weight 50