MAPerformance Exhaust | 17-20 Civic Si

Fits:

• 2017 - 2020 Honda Civic Si

Cat-back exhaust system only — does not include a downpipe or front pipe. We recommend pairing it with either the 27WON or RV6 combo, sold separately.

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MAPerformance built this system around 3" stainless steel tubing with smooth, mandrel-bent routing, using their own CNC mandrel bender to keep the mid-pipe's long legs in as few welded sections as possible — fewer welds means fewer spots for flow-robbing turbulence to creep in.

What sets this system apart is choice: every unit ships with a single resonated mid-section, then lets you swap between three tip configurations on a single 3" V-band connection. The Street setup pairs a single Ultra Quiet muffler with quad 3" tips — quiet enough for a long road trip, aggressive when you're into it, and drone-free at freeway speed. It's been the most popular option among beta testers and staff. The Race setup runs a straight 3" pipe split to quad 3" tips for maximum volume — louder and slightly raspier, but still surprisingly livable day to day, especially with the factory catalytic converter still in place.

Features

• 3" mandrel-bent stainless steel tubing throughout
• Swappable tip system via single 3" V-band connection — Street or Race muffler options
• Street setup: quad 3" tips, drone-free at freeway speed, most popular option
• Race setup: straight-piped for maximum volume, still streetable with factory catalytic converter
• Weight: MAP Street 39 lbs, MAP Race 34 lbs (vs. 43 lbs stock)
• Available with Blue or Polished tips, Coupe or Sedan fitment