Moose Racing M20073 Standard Inner Tubes - 4.00/4.50-19 - TR-4

110/90-19.
120/80-19.

Manufactured to the highest quality as approved by. all the Japanese motorcycle manufacturers. Each tube is individually boxed with a full range of sizes. and valve stem types clearly marked on each box end. GÇóWide range of sizes available for rim diameters from 10 through 21. Real butyl tubes made from 100% butyl polymer, unlike other butyl. tubes, which are blended with butyl polymer and natural rubber. 100% butyl tube minimizes natural air leakage while. maintaining air pressure for a longer period of time.