Inner tube 10x2.125 valve 90x90°

Size

10x2.125 inner tube, inner diameter 6.5 inches (165 mm). This size fits the Ninebot F series, the Xiaomi Mi4 and machines with the same fitment. The rubber adapts to a range of widths around 2.125 inches.

90x90° valve

The valve is angled at 90 degrees on both segments. This double bend brings the inflator head parallel to the rim, where a straight valve would be unreachable between the brake disc and the fork arm.

The angle is dictated by the rim and mudguard geometry. Check the one on the original tube before ordering: this is the leading cause of error on this product family.

Fitting

Sold individually. Inflate the tube slightly before inserting it into the tyre to avoid folds, and make sure it is not pinched between the bead and the rim before bringing it up to pressure.