Parts Unlimited inner tubes are manufactured to the highest quality as approved by all the Japanese motorcycle manufacturers. These are "real butyl tubes" made from 100% butyl polymer, unlike many other "butyl" tubes which are a blend butyl polymer with natural rubber. In comparison, 100% butyl tubes minimize natural air leakage while maintaining air pressure for a longer period of time.
This tube is a good fit for 110/100-18, 120/90-18, 110/90-18 and the range of 4.00-5.10 inch size tires. Note: the suitability for size 110/90-18 is a 2020 revision based on manufacturer name brand tubes.
These tubes are made by one of the worlds largest tire and inner tube manufacturers.
This tube has a metal TR-4 stem, which is a straight stem mounted in the center of the tube.