Panaracer’s R-Air Ultralight innertubes weigh less than many latex tubes. Produced with a special Butyl compound, they do not lose air and do not sacrifice puncture resistance.
47% more elasticity over standard butyl tubes
Compatible with 20 x 7/8 and 20 x 1-1/8 (451)
Valve Length: 60mm
Lightest 451 Tube in the Market
Made in Japan
Approx Weight: 60g