2006-2011 Honda Civic Si Coupe Greddy Supreme SP Cat-Back Exhaust System

The Supreme SP for ever-popular (FG) Civic Si coupe embraces the classic GReddy Civic styling that has made the SP line so popular over the years. Stand out features of this latest version include: larger diameter 63.5mm (2.5”) piping, updated resonator, improved muffler section, and our new limited lifetime warranty. Like all GReddy exhausts, it’s the ideal combination of fitment, styling, performance and deep exhaust note, that sets it apart from the competitors. It is also designed to be compatible with both Si models; coupe and sedan (using the optional 11050104 adapter.) Each GReddy Supreme SP system is a fully hand-welded 304 Stainless-steel exhaust.

Models: Si Coupe, Si Sedan-use with 11050104*
Chassis: FG2
Engine: K20
Type: Cat-back exhaust
Number of pieces: 3pcs
Piping: 63.5 mm (2.5 ")
Tip: 102 mm (4.0 ")
Gasket(s): 2.5 " oval (qty: 2 included) replacement
Resonator: Yes
Weight: 27.5 lbs (Stock weight 27.3 lbs)
Sound level: 90 dB(a) 
HP: +5 hp
TRQ: +3 ft-lbs