Knowledge Base
Where can I buy a new inner tube?
The tube specs are 20" x 1.35 with a schrader or high pressure valve. On Amazon, the exact match: brand and range
https://www.amazon.com/Kenda-20X1-25-1-50-Tube/dp/B00TJAY72O/ref=sr_1_14
and at REI,
https://www.rei.com/product/101931/avenir-schrader-tube-20-x-1375-15
When fitting new tubes please take care when pumping up to ensure that the tube beads with the wheel.