It has not been "Pipe of the Month" for many, many years. Since the mid -90's it has maybe been every three years or so a new series of pipes would come out.
The L Series was the last to come from RLV, and I can't even remember when that was??
We used to sell over a hundred pipes a year until the very early 2000's.......I do not even stock pipes anymore. Have sold maybe three new ones in last five years. And I bet every larger shop will tell you the same thing.
Spec pipes vary from region to region, but even at that, we probably sold less than 20 of the newer SR-Y pipe that WKA tried to use to eliminate the SSX series can.
Open pipe and WKA legal Yamaha rules are definately the way to go for MAOS.