110/90/65-6.5 Use on front or rear Angled valve stem Motovox MBxXSe Mini Bike This 110/90/65-6.5 inner tube can be used on the front or rear tire of the Motovox MBxXSe Micro-Mini bike, and many others Because no one enjoys skinned knuckles, this tube features the angled valve stem design that many users prefer, especially in a small size. This 110/90/65-6.5 inner tube can be used on the front or rear tire of the Motovox MBxXSe Micro-Mini bike, and many others. Because no one enjoys skinned knuckles, this tube features the angled valve stem design that many users prefer, especially in a small size.