THRASHIN Anti-Reversion Exhaust System - FXR

Please allow 7-10 business days for Show Polish Finish. For Black   We have teamed up with Feuling® Parts to bring you the ultimate in V-Twin Performance Exhaust. Over a year in the making and countless hours spent on design and in the Dyno room, we bring you the all new THRASHIN® Anti-Reversion™ Exhaust system!The Thrashin® 2>1 Anti-Reversion™ Exhaust system has equalength stepped headpipes with Jim Feuling's patented design anti-reversion™ 'AR' chambers™ (Patent # US 4206600 A & 6336471 B1), transition merge collector (Patent # 4,796,426) and optional perforated 'dog ball' muffler core (Patent #5,173,576). These technologies promote continuous exhaust gas flow, reducing 'reversionary' pressure waves or 'unwanted' exhaust pollution of the intake charge and combustion chamber, providing increased engine performance and efficiency.This true performance stainless steel pipe starts with square cut headpipe spigots which promote a smooth transition from the exhaust port to headpipe