Flowmaster Flowmaster 2.50 IN(S)/OUT(D) FlowFX OVAL 4X9X18 Muffler - 72206 Flowmaster's Flow FX series mufflers deliver a moderate performance tone for the enthusiast looking for an exhaust note that is different from the "chambered" muffler sound. With a 2.5-inch inlet and... $179.95 $159.99