Mountain Bike Modification Accessories Adjustable Stem Tube 25.4/31.8 Road Positive and Negative Angle Increaser, Mountain Bike Adjustable Stem Tube, Bicycle Handlebar Riser

Mountain bike modification accessories adjustable stem tube 25.4/31.8 road positive and negative angle increaser  

 

The hole for locking the front fork is 28.6mm. Generally, mountain bikes are of this size. A very small number of individual models are particularly inappropriate. The actual measurement shall prevail.
The front fork holes are 28.6mm, and the handlebar lock holes have two sizes of 25.4 and 31.8mm. Measure the middle diameter of the handlebar and choose the corresponding size. Or take a photo to consult customer service.
E.g:
31.8 Adjustable stem 110mm long
Specific dimensions: 28.6mm for the front fork hole, 31.8mm for the handlebar lock, 110mm in length.
E.g:
High-grade casing test 28.6*31.8/90 length
Specific dimensions: the front fork hole is 28.6mm, the handlebar hole is 31.8mm, and the length is 90mm.
Change the height of the handlebar by changing the angle, and adjust the height to suit you at will.
Adjustable stem height increase:
It is 90 mm long and increases by about 5 cm.
It is 100mm long and increases by about 6 cm.
110mm long, about 7 cm in height.
It is 120mm long and increases by about 7.5 cm.