Michelin Street Motorcycle Tubes Michelin Motorcycle Inner Tubes stand out for their exceptional quality, featuring heavy-duty butyl construction and superior valve stem hardware. These tubes are distinctively designed with an overlap splice construction, ensuring greater durability than the commonly used butt splice. Precisely placed opposite the valve stem, this design element also contributes to the tube's balanced performance. Features: Features an overlap splice which is stronger than the butt splice technique used by many sub-standard tubes Splice positioned opposite the valve stem to balance the tube Tr-4 / Tr-6 straight metal stem (8mm diameter) Tr-87 90 degree metal stem (8mm diameter) Tr-741 150 degree metal valve stem (8mm diameter) Note : Tr-4 and Tr-6 valve stem styles can be used interchangeably.