This Hartex XTRA FAT inner tube is sized for 27.5-inch fat bike tyres from 3.50 to 4.50 inches, with ETRTO 90/114-584 compatibility. The 48 mm Presta valve suits rims drilled for Presta and gives useful length for many fat-bike wheel builds.
Because fat-bike inch sizes can overlap, confirm the 584 mm rim diameter and a tyre width in the 90 to 114 mm range before fitting. It is intended for compatible 27.5 fat bikes and wide adventure wheels using Presta valves.
| Type | XTRA FAT inner tube |
|---|---|
| Brand | Hartex |
| Tyre size | 27.5x3.50 / 27.5x4.50 |
| ETRTO range | 90/114-584 |
| Valve | Presta 48 mm |