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SKU: 10158208
GReddy 2006-2011 Honda Civic Si 63.5mm Supreme SP Cat-Back Exhaust
The GReddy Supreme SP Cat-Back Exhaust bolts onto 2006-2011 Honda Civic Si models replacing the factory system from the catalytic converter back. Its 63.5mm mandrel-bent piping improves exhaust flow for gains up to 9 hp and 8 ft-lbs torque plus quicker throttle response. Drivers enjoy a deep aggressive tone with reduced drone thanks to the patented SP chamber muffler design.
Key Features
- SUS304 Stainless Steel: Full construction from piping to muffler ensures corrosion resistance and long-lasting durability
- 63.5mm Mandrel-Bent Piping: Smooth bends minimize backpressure for better engine breathing and performance
- 102mm Polished Single Tip: Adds bold rear styling with a show-ready finish
- Supreme SP Muffler Technology: Helmholtz chamber delivers refined powerful sound without interior resonance
- Lightweight Build: 27 lbs design cuts rear-end weight compared to stock for improved balance
Product Notes
- Dyno-tested on R18A1 engine for verified power increases
- Includes gaskets and hardware for complete assembly
- Oversized packaging requires signature confirmation on delivery
Installation Notes
- Professional installation recommended.
- Bolt-on design connects to factory catalytic converter outlet
- Uses existing factory rubber hangers and mounting points
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2006-2011 | Honda | Civic | Si |
| 2008 | Honda | Civic | MUGEN Si |
Why Choose GReddy?
- Decades of Japanese motorsport exhaust development
- Premium materials tested for street and track demands
- Precision fitment confirmed on USDM Civic Si chassis
Frequently Asked Questions
-
Q: Does this fit both 2006-2011 Civic Si coupe and sedan?
A: Yes it fits FA5 coupe and FG2 sedan models with direct bolt-on connection to the stock cat pipe -
Q: What materials are used in construction?
A: SUS304 stainless steel throughout the piping muffler and 102mm tip for strength and shine -
Q: What warranty coverage is provided?
A: 1-year limited manufacturer warranty covers manufacturing defects under normal use
Shipping & Handling
- Method: UPS Ground or FedEx Ground
- Availability: In stock - ships same or next business day
- Packaging: Single oversized box 48 x 12 x 12 inches
- Weight: 27 lbs
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