Spark Exhaust Technology Yamaha R3 "GP" Full Exhaust System (WSBK Evolution). Titanium silencer with stainless mid-pipe and stainless racing header. The full system has been designed starting from the best sizing for collectors in order to optimize gas delivery. Collector has been created with the best construction technologies and structural details to ensure top reliability. Handcrafted in Italy. Ultra lightweight approximately 5.25 lbs. Dyno Tested for maximum horsepower increase over stock, 109 db. Non-Homologated Racing Version for Maximum Performance. For perfect performance, throttle response and durability, ECU remapping is recommended.