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 of around 5 bhp will be achieved with the slip on and full systems around 10-14bhp All titanium pipework 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. The GP1/GP2 it uses internal baffling to allow you to control db levels from 102 to 110 plus-LOUD! Carbon option is a sleeve over titanium, as such it will last for life! Removable db killer also supplied. FULL INSTRUCTIONS SUPPLIED Proven and tested to be the most powerful exotic full exhaust systems available today! In race use situations we advise regular insert re packing or removal of the insert completely.