I already contacted Yoshimira directly. I could not locate similar Exhaust. It's in my 2001 Raptor 660r. It also has Stainless Headers that glow cherry after about 10 minutes if riding easy. Only thing I know is it's compatible with a Yoshimira TEC-SB Spark Arrestor. Header has several "brackets". Stainless Headers are apparently compatible with OEM heat shields, also shown in picture. I need info on exhaust properly tune machine. Thanks for any help.