The Maxxis Welter Weight tube fits 650b (27.5") wheels in the 1.75 to 2.4 inch tire width range, with a 48mm Presta valve for deeper rims. A removable valve core lets riders add sealant, giving the tube extra flat protection for everyday mountain and gravel riding.
Built from butyl rubber with a .9mm wall thickness, the tube balances weight with everyday durability. At 222g, it stays light enough for regular trail use while offering a threaded Presta valve that seats securely and holds air pressure over time.
Quick Facts
| Feature |
Specification |
| Size |
650b (27.5") x 1.75-2.4" |
| Valve Type |
Presta (threaded, removable core) |
| Valve Length |
48mm |
| Wall Thickness |
.9mm |
| Weight |
222g |