Spark Exhaust Technology Yamaha MT-09 / FZ-09, Tracer 900 and XSR 900 "Grid-O" Full Exhaust System (2014-2020). Constructed with a titanium silencer, stainless mid-pipe, and stainless racing header. Handcrafted in Italy. Ultra lightweight approximately 2.4kg. Dyno Tested for maximum horsepower increase over stock, 110 db @ 5,000rpm). Non-Homologated Racing Version for Maximum Performance. For perfect performance, throttle response and durability, ECU remapping is recommended.