The GP1 is our latest exhaust design with clean lines, no springs and minimal parts to give a slick clean look It sounds & looks totally MOTO GP! As with all of our exhausts performance gains will be achieved with the slip on No remap required for the Slip on options but adding a race ecu and fuelling module will give significant gains as seen with our GP2 and GP2R options. Like the GP2 it uses internal baffling to allow you to control db levels from 102 to 110 plus-LOUD! Removable db killer also supplied. Carbon option is a sleeve over titanium, as such it will last for life!