This Hartex fat bike inner tube is made for wide 24-inch tyres on a 507 mm rim, with ETRTO 100-507 marking. It suits compatible junior fat bikes, compact fat bikes and wide-tyre utility wheels that use a Schrader valve.
Because inch markings can vary on fat-bike tyres, use the ETRTO as the main fit check. The tyre should be marked 100-507, or an equivalent wide 24-inch size around 3.50 to 4.00 inches, and the rim should accept Schrader.
| Type | Fat bike inner tube |
|---|---|
| Brand | Hartex |
| Tyre size | 24x3.50 / 24x4.00 |
| ETRTO | 100-507 |
| Valve | Schrader |