Yosh Stainless Full Duplex R-22 Bling
And one of the Great reasons for a four into One is EASY CHAIN MAINTENANCE LUBE etc..
Had an 03 Busa stock exhaust after coming off 02 R1.......
Went to 05 GSXR1000 and loved the single sided pipe when I lubed chain...quick and easy access..........so when I went back to a 07 Busa the first thing was to put on a 4 into 1 and get rid of the HEAVY stock pipes.......