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GReddy Supreme SP Exhaust Si Sedan

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Availability: In stock

Regular Price: $1,039.99

Special Price: $949.99

PART #: GRD-10158217
Designed specifically for the 10th generation (FC1) Sedan version of the Honda Civic Si, is our dual muffler Supreme SP cat-back exhaust. With similar features as our coupe version, the longer sedan version features high-flow with refined exhaust note. Under wide-open-throttle, spirited driving, the system offers the classic GReddy deep exhaust growl. To enhance the performance of the turbocharged 1.5L engine, this 3piece, full cat-back exhaust connects to the factory downpipe and expands to large 3” (76mm) front-pipe and mid-pipe that split to two polished, straight-through SP oval mufflers and dual center-exit dual-wall GReddy tips. The sedan version has a slight more aggressive tip angle and muffler combination is a better compliment to the Si sedan’s sporty, but wide rear bumper tip opening. Like all GReddy Supreme SP systems, the fully hand-welded 304 Stainless-Steel exhausts carry a Limited Lifetime Warranty.


Chassis: FC1 4door Sedan
Engine: L15 Turbo
Type: 3" Cat-back with dual oval muffler with dual tips
Number of pieces: 3
Piping: 76 mm (3 ")
Tips: 2x 115 mm (4.5 ")
Gasket(s): 3 " oval (qty: 2 included) replacement
Resonator: Yes
Manufacturer GReddy

Product Fits:

2017+ Honda Civic Si Sedan


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Customer Reviews

  • Price
    One of the best exhaust system
    Review by Cj(on 2019-08-18)
    1. Fitment is really good.
    2. Sounds awesome, boomy and throatier. It has mini pops/crackles between shift. Its quiet when crusing on a hwy.
    3. People say the muffler is too big but I think thats what set this exhaust apart from other exhaust system out there. Its different.