Ok I just put the cobra utility pipe w/spark arrester on my wifes 200es and yes it is louder than stock but only maybe 5 or 6 decibles, still quieter than the cobra quiet series that my neighbor has on his 200m, plus I got the spark arrester. I got mine and his through dennis kirk.com mine was $200 his was $160, anywho just my 2 cents and personal experience.
79 ATC 70 (Youngest Son's eventually)
83 ALT 50 (My youngest Son's)
85 ATC 70 (My Eldest Son's)
85 ATC 250SX (The Wifes)
85 TRI Z 250 (Mine)
85 ATC 350X (Mine)
93 KDX 250 SR (Mine Asian spec)
97 RM 125 (The Wife's)
02 ZXI 1100 Jet Ski (The Fam's)
03 BUELL Blast (The Wife's)
12 FXDWG103 (ALL MINE)