ulip (2 Pack) 8.5 inch Inner Tube Rear Wheel Bent Valve Stem 50/75-6.1 Rear Tire 8 1/2 x2 Compatible for Gotrax GXL V2 Hiboy S2 Pro Xiaomi M365 Pro 1S MI3 Lite Pro2 Electric Scooters

Good product

The Gotrax website has been out of stock of these inner tubes off and on. I get flats from thorns all the time. The green slime doesn't work!! These fit the Gotrax G3 just barely and you have to wedge the air stem out with needle nose pliers or a flat head screw driver to be able to pump it up. The stem doesn't point in the right direction for the G3. But the last tube I ordered from Gotrax for $25 was this same type with the stem pointing inward not outward. It still works and you get 2 inner tubes here. I used it on my rear wheel but should fit front wheel the same. I went through a few inner tubes on amazon that didn't fit the G3 at all. They were too fat even though they were 8 1/2 x 2 inch.My pro tip is to remove the 5 or 6 bolts from the rim to make it come apart in 2 pieces. Don't waste your time trying to put these on like a regular bicycle tire.Update: The first tube I installed ended up getting a pinch flat after about 3 weeks because the tube is a little too fat for the GoTrax G3 rear wheel. The tube got pinched when I put the 2 parts of the rim back together and screwed it in. I swap it with the the other tube that come in this 2 pack and used a rim tool to make sure the tube doesn't get pinched this time as I screw in each bolt. So far so good 2 weeks later.

I ordered these tires in March 2023 and they appeared like the picture with the bent valve that is parallel to the tire. I ordered these tires again in June 2024 and the bent valve is perpendicular to the tire so it keeps catching part of the frame when it goes around. So I'm ordering the tire another time hoping I get similar tires to the ones I got in March 2023.

These are good and last! Amazing price

I have a Gotrax Apex Pro Escooter and gave a chance to use this inner tube replacement. According it should fit to my 8.5 tire, turns out it's kinda large to not fit right. What is more disappointing the quality is very poor and for only one day they didn't took an hour to notice it punctured right away. There is tools to help you take out your tire. They are alright but they do bend a bit.