For those who get frustrated at getting the oil filter out of the SR20DE based Pulsars, there is a Honda motorbike oil filter tool that appears identical to the tool used by Nissan service centres.

The part number is (or was - have had mine for 10 years) 04151-MW0-305. Cost was under $20 when I bought mine.

Thanks to member SoK who contributed this to the old forum.