SKU: 23425424646

Invidia Gemini Cat-Back Exhaust w/Ti Burnt Tips - 2017-21 Civic SI Sedan

Sale price$629.75 Regular price$699.72
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Ships within 48 hours · Estimated delivery Jul 11 - Jul 16

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Description

Invidia Gemini Cat-Back Exhaust w/Ti Burnt Tips - 2017-21 Civic SI SedanThis is Invidia's new high performance Gemini Cat Back Exhaust System for the 2017 21 Honda Civic SI. This is a performance oriented exhaust system with titanium burnt tips. Designed to increase horsepower while producing an aggressive sound. Invidia Gemini cat back exhaust systems will provide your vehicle with a pronounced exhaust note throughout the entire RPM band, and the design improves performance from the increased piping diameter, to the

This is Invidia's new high performance Gemini Cat-Back Exhaust System for the 2017-21 Honda Civic SI. This is a performance-oriented exhaust system with titanium burnt tips. Designed to increase horsepower while producing an aggressive sound.

Invidia Gemini cat-back exhaust systems will provide your vehicle with a pronounced exhaust note throughout the entire RPM band, and the design improves performance from the increased piping diameter, to the smooth bends that reduce exhaust flow under acceleration. This means that you will have improvements in throttle response, and you will have increases in both horsepower and torque. 

This is a great exhaust system for those of you who enjoy the occasional weekend track day, or who enjoy the spirited drive. With the stainless steel tip finish, this exhaust system will look great on the exterior of your vehicle.

Exhaust hangers are welded onto the OEM locations of this exhaust system so you don't have to worry about making further modifications to the body. New hardware and gaskets will be included with this exhaust system to make it ready for installation. 

Features

  • Cat-back stainless steel exhaust system
  • Increased piping diameter with smooth mandrel bends
  • Connects all the way to the primary downpipe
  • Includes a total of 3 mufflers and 1 mid-pipe resonator
  • Main tubing diameter: 2.75" 
  • Tip outlet diameter: 4" 
  • Exhaust hangers welded onto OEM locations for direct fitment
  • Improves throttle response
  • Increases horsepower
  • Aggressive exhaust note
  • Machine welded - Fantastic appearance and uniform strength

Vehicle applications: 2017-21 Civic SI Sedan (4 Door)

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
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SKU: 23425424646

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Chadnic
Whiting, US
★★★★★ 5
Always order big!
I needed a minimum of 2 AWG wire to create interconnects between batteries in a large bank. If you note, these say 1/0 Gauge, not AWG. What is 1/0 Gauge? Who knows, it's fake. Meaningless, because it is not standardized so you have no clue what you are getting. What did I get for my 1/0 Gauge wire? Something that was in between 1 and 2 AWG (closer to 1). This was perfect for my needs because I knew darn well how big to order when they say gauge instead of AWG. As a rule of thumb: If they as gauge, order 3 - 4 sizes larger than you need in AWG. This will always net you larger wire than you need but I have never had it net me wire smaller than I needed. At the price I got it for during prime days, it was a steal for 2 AWG wire, so I win! I hope you found this helpful!
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Reviewed in the United States on October 21, 2024
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Bret Jackson
Whiting, US
★★★★★ 5
Best main wire for price
Size: 25 FT, Style: 0 (1/0) AWG RED
Good main wire and is accurate size and length
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Reviewed in the United States on May 18, 2026
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Alexander Santos Espinal
West Palm Beach, US
★★★★★ 5
Cables buenas
Size: 25 FT, Style: 0 (1/0) AWG RED
Excelente 👌
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Reviewed in the United States on May 9, 2026
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Joshua Garner
Chelsea, US
★★★★★ 5
Don’t hesitate
Size: 15 FT, Style: 0 (1/0) AWG RED
Tough good quality wire!
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Reviewed in the United States on May 5, 2026
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West
Port Orchard, US
★★★★★ 5
Buy them. You won't regret it.
Size: 10 FT, Style: 0 (1/0) AWG RED
Thick, flexible, quality cable. Overkill for what I've got but man they flex like wet noodles easy to run.
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Reviewed in the United States on October 21, 2025

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