Superb quality FMF PIPES available for your EC Enduro bike. The 'FATTY' improves the power all the way through the rev range and is suited more for 3 hours races than long Enduros. This pipe is best in dry and 'revy' conditions... The 'GNARLY' focuses on increasing the lower RPM horsepower and torque. GAS GAS Enduro bikes boast superb bottom to mid power standard so imagine an improvement these make !! The Gnarly is also made out of 18 gauge steel which is a bit heavier but super strong. Perfect for long Enduros or trail riding. The best choice for wet, shitty events!