GReddy Supreme SP Cat-Back Exhaust - 06-11 Honda Civic Si

Regular price $790.00 USD $711.00 USD

Ready To Ship! Special Order! Ships in 14+ weeks

Part # gre10158208

The Supreme SP Cat-Back Exhaust for the 06-11 Honda Civic Si FG coupe embraces the classic GReddy Civic styling that has made the SP line so popular over the years. A large diameter 63.5mm (2.5”) piping, updated resonator, improved muffler section, and our new limited lifetime warranty make this the ideal combination of fitment, styling, and performance.

  • Honda Civic Si [FG2 - Coupe] (2006, 2007, 2008, 2009, 2010, 2011)
  • Honda Civic Si [FA5 - Sedan]*** (2006, 2007, 2008, 2009, 2010, 2011)

***It is also designed to be compatible with the Sedan Si models via the optional 11050104 adapter


  • Large oval muffler and 102mm tip
  • Made for maximum muffler ground clearance
  • Single 63.5mm (2.5") piping
  • Exceptional sound and power for the K20
  • Classic Supreme SP 102mm (4") laser engraved GReddy tips
  • Hand-welded 304 Stainless-Steel exhaust
  • Limited Lifetime Warranty

Extended Information

  • Models: Si Coupe, Si Sedan-use with 11050104*
  • Chassis: FG2
  • Engine: K20
  • Type: Cat-back exhaust
  • Number of pieces: 3 pcs
  • Piping: 63.5 mm (2.5 ")
  • Tip: 102 mm (4.0 ")
  • Gasket(s): 2.5 " oval x2
  • Resonator: Yes
  • Weight: 27.5 lbs (Stock weight 27.3 lbs)
  • Sound level: 90 dB(a)
  • HP: +5 hp
  • TRQ: +3 ft-lbs

Customer Reviews

Customer Reviews

Based on 1 review
Henry L. (Barrigada Village, GU)
Top notch🏆

Very fast shipping and quality exhaust had this on my 9th gen before and will always stick to greddy till my last honda for sure

Customer Questions


In stock, non special order items can be returned within 30 days of the product arriving to your house or place of work.
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