Collection: Exhaust Parts for 2004 Honda Civic Si

Shop 19 exhaust parts that fit the 2004 Honda Civic Si - cat-backs, axle-backs, headers, downpipes, mufflers, tips and more from Magnaflow, Fel-Pro, Victor Reinz and Flowmaster. Only parts listed for the Si are here. Every part shows its real ship date and California status, orders over $100 ship free in the lower 48, and you can hear real sound clips before you buy.