Apexi N1 Catback Exhaust - 2006-2011 Honda Civic Si Sedan *Discontinued Track Suspension If the cap doesn't seal

If the cap doesn't seal tight after install

a damp microfiber cloth is all you need

Factory-style reservoir designed to handle pressurized coolant circulation on your engine bay

Line them up with the original holes and secure with the existing fasteners

This bolt-on guard mounts to factory points and handles rocks

Apexi N1 Catback Exhaust - 2006-2011 Honda Civic Si Sedan *Discontinued Track Suspension If the cap doesn't sealThe N1 series muffler has become a staple of the import tuning industry. The N1 was the first of its kind to incorporate the classic angled muffler design that has became so familiar with today's street cars. Born from our involvement in the grueling N1 endurance series, the N1 exhaust system pairs a straight through design racing muffler with free flowing, mandrel bent piping (60. 5mm N A, 80mm for turbo applications). The combination has resulted in