Genuine Segway-Ninebot replacement 4mm stem mount screws compatible with the ES1, ES2, ES3, and ES4 Series.

If you notice that either of these screws is backing out and needs to be tightened, we recommend that you use a very small amount of Loctite Threadlocker Blue 242. This will help to keep the screws from backing out due to vibration while riding.

There is also a 'Red' variant. The Red Loctite is permanent and should NOT be used on your scooter.

You can safely use the Loctite Threadlocker Blue 242 on any other screw(s) that you notice backing out on your scooter.


4mm Screw Color is Black.
Includes four (4) 4mm screws.

Will work on the front base of the scooter stem. or the rear base of the stem.

See the illustration for placement.

Only need two (2) screws?  Click Here.