Tecnigas Silent Pro Exhaust for Agility 4 stroke. Overall very inexpensive replacement exhaust system. This system is supplied without catalyst and without connection for the SLS system, which gives a slight performance boost. The secondary air system can be blanked off. This has no influence on technical characteristics. The hose connection of the SLS is simply placed in the lower fairing and fixed in place. E-certified and ABE (general approval).