The right tube for fat and plus rubber.
Standard mountain tubes stretch badly past about 2.5" and get thin where you need them thick. The Maxxis Fat Bike / Plus tube is built at the right circumference from the start, with a 1.0 mm wall that holds up at the low pressures fat and plus tires actually run.
Pick your size
| Wheel | Fits tire width | Valve |
|---|---|---|
| 26" | 3.0–5.0" | Presta 48mm or Schrader 48mm |
| 27.5" | 3.0–5.0" | Presta 48mm |
| 29" | 2.5–3.0" | Schrader 48mm |
Details
- 1.0 mm wall thickness — fat-bike specific, not a stretched trail tube.
- Removable valve core on Presta — you can run sealant inside the tube.
- 48mm valve stem — long enough for deep fat rims.
- Works at both ends of the pressure range, from 5 psi float to firm hardpack.
From the shop
Carry one even if you're running tubeless. A fat tire that won't seal in the cold is a long walk out, and a tube is the fix that always works. If you're between the 27.5 and 29 sizing, measure your tire width, not your wheel — a 29 x 3.0 takes the 29 tube, a 27.5 x 3.8 takes the 27.5.
Not sure what you're running? Bring the wheel into Midway or Heber and we'll match it.
Specifications & Geometry
Full build details, sizing, and geometry