... 4.Accept OEM and Good Service MOTORCYCLE INNER TUBEnatural rubbe motorcycle tire inner tube 1. we are manufacturer in china ... with special needs of customersour main natural rubber motorcycle inner tube products modelvalveWeight(g)Width(mm)225-16Tr435066225-17Tr436067250 ... :anti-wear ,rolling resistance ,driving performance,airtightness of inner tube,elongationg rate ,heat fatigue,long time of cracking ...