Replacement inner tubes for all Super73 ebikes, both Knobbly and Street tires.
It's a good idea to purchase spare inner tubes for your SUPER73, as fat tired bikes are more prone to punctures than traditional sized tyres.
Dimension for S2-E & RX-E Series: 20"x 4/4.5"
*Recommended 28-29 PSI, may vary dependent on riding terrain and weight of rider.
These tubes are made in Indonesia with a thicker compound of rubber to help prevent punctures. Each tube has one schrader valve.
Sold as a single tube.