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SKU: SES1581TT | UPC: 843115027230
Injen 17-20 Honda Civic Si 1.5L Turbo (Sedan Only) 3in Cat-Back Stainless Steel Exhaust
This Injen cat-back exhaust system replaces the factory exhaust from the catalytic converter back on 2017-2020 Honda Civic Si Sedan models with 1.5L turbo engines. Mandrel-bent tubing ensures consistent diameter for smooth exhaust flow and noticeable power increases. Expect a deep aggressive exhaust note that enhances the driving experience while maintaining easy bolt-on installation.
Key Features
- Mandrel-Bent T304 Stainless Steel Tubing: Provides smooth unrestricted airflow throughout the 3-inch diameter for improved exhaust scavenging and horsepower gains.
- 100% TIG Welded Construction: Handcrafted in Pomona California USA for durability and precision joints that resist corrosion and fatigue.
- Investment Cast Flanges and Custom Hangers: Ensures perfect alignment and secure mounting with all necessary hardware included for direct fitment.
- Aggressive Sound Profile: Delivers a deep throaty tone under acceleration without excessive drone on highway drives.
- Complete Bolt-On Design: Includes mufflers mid-pipe resonators and clamps for hassle-free installation in under 2 hours.
Product Notes
- Fits sedan models only confirm your Civic Si is a 4-door sedan before purchase.
- Clean with mild soap and stainless steel polish to maintain finish over time.
- Securely packaged to prevent damage during transit.
Installation Notes
- Professional installation recommended.
- Bolt-on design uses factory mounting points no cutting or welding required.
- Includes all stainless steel clamps bolts and hangers for complete hardware kit.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2017-2020 | Honda | Civic | Si Sedan |
Why Choose Injen?
- Decades of exhaust engineering experience across cars trucks and powersports.
- All systems built with premium materials for long-lasting performance.
- Designed tested and manufactured entirely in the USA for quality control.
Frequently Asked Questions
-
Q: Does this exhaust fit 2017-2020 Honda Civic Si hatchback models?
A: No this SES1581TT system fits sedan models only due to unique rear suspension and bumper differences. -
Q: What material is used in this exhaust system?
A: Constructed from heavy-duty T304 stainless steel tubing with mandrel bends and TIG welds for corrosion resistance and strength. -
Q: What warranty covers this product?
A: Injen provides a lifetime structural warranty and 5-year finish warranty against manufacturing defects when installed properly.
Shipping & Handling
- Method: Standard ground shipping
- Availability: In stock - ships same or next business day
- Packaging: Securely boxed dimensions 48 x 14 x 14 inches
- Weight: 28 lbs
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