Inner Tube – 20″ x 4″

What’s Included Replacement inner tube for 20″ tires 3.3″ – 4″ wide PSI Range: 5 – 30 PSI Inner Tube – 20″ x 3.5″-4″ Schrader Valve Compatibility RadWagon 5 (2024-2025) RadRunner MY25 (2025) RadRunner Plus MY25 (2025) RadRunner Max MY25 (2025) RadRunner 1-2 (2019-2025) RadRunner 3 Plus (2023-2025) RadExpand 5 Plus (2024) RadExpand 5 (2022-2024) RadMini 1-4 HS (2016-2022) RadMini ST 2 (2020-2022) Tire performance and replacement information