Mototec Sport Edition Exhaust Systems are Designed to Exceed Your   Expectations! Mototec exhaust systems are designed and manufactured with the   performance enthusiast in mind. Sound is a critical design concern with any   exhaust system. Mototec Sport Edition exhaust offers a pleasant deep sound under hard   acceleration and a nice mellow, almost unnoticeable tone at cruising speeds.  Standard exhausts use a baffle design where a series of plates slow the   exhaust gases, but ultimately this leads to an increase in back pressure. Mototec   silencers have no baffles. Instead, noise is reduced by absorption through a   center perforated tube. Consequently, there is less gas flow restriction and so   back pressure is reduced, torque is increased and engine performance is   enhanced. Back pressure can be reduced by up to 80% making them ideal for   combining with ECU  upgrades, air intake systems and other   upgrades.  Both the   tubing and resonators are constructed using mandrel bent T304 stainless steel. It is   essential that gas flow from the engine is unrestricted and flows smoothly along   the whole length of the exhaust system. This ensures that the gas exits as   quickly as possible, ensuring back pressure reduction and enhanced engine   performance.  Each exhaust kit is made to fit a specific application. In-house jigs ensure   exact replication of the prototype and each kit is supplied with fitting   hardware (clamps, gaskets and rubber mounts if required). Exhaust tips are made from T304   polished stainless steel which offers a   perfect finishing touch. Mototec guarantees the quality of each   stainless steel system with its 5 warranty program.