Invidia N1 Catback Exhaust Civic Si Sedan (2006-2011) Acura ALTA was the first manufacturer

ALTA was the first manufacturer to design a two piece

The reconfiguration of the flex pipe on the Performance Downpipe ensures that stress goes where it should

but with a 15-20% higher torque capacity

Caster Explained

This exhaust features 102mm quad tips and provide max gaions of 11 hp and 11 ft-lbs of torque at the crank

Invidia N1 Catback Exhaust Civic Si Sedan (2006-2011) Acura ALTA was the first manufacturerThe Invidia N1 system for your Civic Si features 70mm piping and an attractive 101mm titanium tip. Made entirely from mirror polished stainless steel, all Invidia exhaust systems include their signature thick CNC flanges and precision robotic TIG welds. All mandrel bends and their signature N1 syle free flowing muffler release more ponies to the pavement for performance you will hear and feel. The N1 features and extremely aggressive exhaust note and