This Hartex XTRA FAT inner tube is made for wide 20-inch tyres from 2.60 to 3.00 inches, matching the ETRTO 66/76-406 range. It suits compatible compact fat bikes, junior bikes and wide utility wheels that use a Schrader valve.
For the best fit, check the tyre sidewall before installation: the rim diameter should be 406 mm and the tyre width should fall in the 66 to 76 mm range. The 48 mm Schrader valve gives practical access on deeper or wider rims.
| Type | XTRA FAT inner tube |
|---|---|
| Brand | Hartex |
| Tyre size | 20x2.60 / 20x3.00 |
| ETRTO range | 66/76-406 |
| Valve | Schrader 48 mm |