GP1 Tips are GP1R angular tip or GP1 round tip.
GP1RR is 70mm bore tip in silver/titanium can or Black/black ceramic can. No db killer available.
GP2R is a 110mm can in titanium or carbon

• Full titanium construction
• Advanced flow dynamics
• Massive weight saving
• The GP1/GP2 uses internal baffling to allow you to control db levels from 102 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!