Inner tube 8.5x2 rim 134 mm valve 90x90°

Size

8.5x2 inner tube for a 134 mm rim. This size fits the Zero 8 and Zero 9 among others. The rubber adapts to a range of widths around 2 inches.

The 8.5x2 comes in three rim diameters

This is the key point on this size: the 8.5x2 fits rims of 134, 140 or 156 mm depending on the machine. A tube made for a 134 mm rim will be too small on a 156 mm one, and too large the other way round.

Check the rim diameter before ordering. The size alone is not enough.

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.