20,000 mi. on mine.
Seams to be well made.
I've got the red filter cover, just clean and oil it.
Have not touched the main filter.
Much easier access to the TB's, etc.
Different sound than stock, it's OK.
I've got the remus 2 to 1 the bike has run great with
40 mpg two up, mas o menos.
Twist it, Max
Da oggi la strada
é senza limiti