4-10 Week Lead Time KAWASAKI ZX636 2024 GP1R is 60mm bore tip in black or pure titanium Full titanium construction Advanced flow dynamics Massive weight saving Supplied with DB killer The GP1/GP2 uses internal baffling to allow you to control db levels from 97 to 110 plus-LOUD! Carbon option for GP1 is a sleeve over titanium, as such it will last for life! De-cats the bike Simply bolt on and ride! We advise removing the pillion pegs when using this system. SPECS Austin Racing De-cat: 1.3kg DB LEVELS - TESTED AT 5500RPM   GP1 110mm - 105 without killer / 100 with killer