At 25 Micron, there are Superior Filters on the Market..
Take a look at this Conservatively Rated 15 Micron Absolute Filter.
http://bestoil4you.com/files/g2235EAAM_EAOM.pdf
No Other filter will do the job as well.
Why send people to BITOG ? Let's get some oil talk going here.. I would be happy to share my 35 yrs with the group..
And yes, the AMSOIL EA Series Filters are the best you can buy but about $3.00 less than what you have quoted for the best filter on the market is a cheap price to pay. If they weren't worth it, I wouldn't keep putting them on my 350,000 mile van.
Although Champ labs may be the assembly point, the filters are different. Any filter manufacturer has access to about 75 different media and various internal components. Champ also makes $1.50 quick lube filters. I know for a fact they are not the same.
I think you may find part of your answer above..
To the OP..... I believe those filters cross to Mobil 1 M-110 for the longer and M-108 for the shorter.. They are interchangeable... The long would be an AMSOIL EAO-13, the short I would have to look up but it also fits various Kawasaki, Honda, Yamaha and Victory Motorcycles... AMSOIL M/C Filter # is EAOM-103
Doc 