OK so I went today and purchased the honda oem filter and honda oil for my 600 mile service. I did alot of searching online before I drove 45 mins to the dealer to purchase the filter. I also have a filter that fits a 99 trx300fw that is of napa brand. It crosses over to a fram ch6015. The cbr250r also crosses over to a ch6015, but the honda part #'s are different. After purchasing the filter and bringing it home, I see that the filters look identical!!!! So whats up with that??? 
