lifetime cleanable and the flow I would say is a touch better but don't quote and it may not be much until the old one starts to break down and needs to go in the trash
If you are talking about the S&S high flow,that's the one inch wider filter with one inch standoff bolts. The only k&n typ washable filter I found for mine is made by Green Performance Filters. J&Pis where i got mine. Definitly flows better than stock high flow paper filter, and I think slightly better than standard size K&N filter.