SKU: 99160400626

Invidia Q300 Cat-Back Exhaust | 2006-2011 Honda Civic Si

Sale price$292.32 Regular price$324.80
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Ships within 48 hours · Estimated delivery Aug 8 - Aug 13

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Description

Invidia Q300 Cat-Back Exhaust | 2006-2011 Honda Civic Si2006 2011 Honda Civic Si Q300 Cat Back Exhaust by Invidia This is the Invidia Q300 Cat Back Exhaust System. The Q300 is a highly coveted exhaust system among enthusiasts because it gives them everything they want in terms of a performance upgrade. You get premium fabrication using quality materials that are combined with machined welds. The design features very smooth radius bends with an increase in piping diameter to allow for an unobstructed flow

2006-2011 Honda Civic Si Q300 Cat-Back Exhaust by Invidia

This is the Invidia Q300 Cat-Back Exhaust System. The Q300 is a highly coveted exhaust system among enthusiasts because it gives them everything they want in terms of a performance upgrade. You get premium fabrication using quality materials that are combined with machined welds. The design features very smooth radius bends with an increase in piping diameter to allow for an unobstructed flow path for the exhaust to escape. And the beautiful polished finish right out of the box will check all the aesthetic boxes to provide the rear of your vehicle with a pronounced look. The final result will provide the user with a nice increase in power and torque, and improvements in the throttle response. The most rewarding aspect is the race-inspired sound. From mild bolt-ons to full builds, the Invidia Q300 will change the character of your vehicle to make your driving experience much more enjoyable.

Features

    304 stainless steel construction 70mm piping diameter Tuned muffler Cast flanges Premium machined welds Single polished stainless tip Smooth bends allow for an unobstructed exit path Creates a race-inspired exhaust note Exhaust hangers welded onto the OEM locations to make for a direct fitment Includes gaskets and hardware to make this exhaust ready for the installation

Benefits

    Improves horsepower and torque Improves the throttle response Saves weight

Please Note: Sedans and coupes use different systems. Please select the correct part before you add it to your cart.

Applications

  • 2006-2011 Honda Civic Si

What's In The Box?

  • 1 - Exhaust System

Warranty

  • Invidia's Limited Manufacturer's Warranty
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
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]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 99160400626

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4.5 ★★★★★
Based on 23 reviews
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Verified Purchase
Bennett
Cuba, US
★★★★★ 3
Good performance, flaky Wi-Fi connection
Style: L50 SES
The L50 physically works great - it does a good job of picking up dust and dirt at the end of the day. The pathfinder and route planning algorithm is fairly efficient at determining the best way to clean a room. Sometimes it kicks around bits of dust with its spinning brush without picking it up, but it's not often. What has been terrible, however, is the Wi-Fi support. Since our provider disabled 2.4 GHz support from their router modem without notice, I use a Mac Mini to supply the 2.4 GHz signal, and even though the Eufy is next to it and my phone gets full signal strength, it still can't connect to it half the time. After it fails to connect, it needs to be restarted or even reset to try to get the connection again. Support doesn't seem to be helpful in offering a solution.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 23, 2026
C
Verified Purchase
cecilia pena
Charlottesville, US
★★★★★ 5
Perfect Replacement Roller Mop for Eufy Robot Vacuum
This replacement roller mop fits perfectly and works just like the original. Installation was quick and easy, and the quality feels durable and well-made. It does an excellent job picking up dust and light debris while providing consistent floor cleaning performance. The roller is washable, easy to maintain, and holds up well after multiple cleaning cycles. I appreciate that it restores the robot’s cleaning effectiveness without any compatibility issues. If you own a compatible Eufy model and need a replacement, this is a reliable option that keeps your robot performing at its best. Highly recommended for maintaining optimal cleaning results.
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Reviewed in the United States on May 30, 2026
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Verified Purchase
Grandma of 5
New York, US
★★★★★ 5
Fit perfectly
Fit perfectly!
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Reviewed in the United States on March 12, 2026
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Verified Purchase
Blaine
Lexington, US
★★★★★ 5
The best quality
Love Eufy
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Reviewed in the United States on January 4, 2026
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Verified Purchase
Emanuel
Grantham, US
★★★★★ 1
Not good, poor quality from Eufy products
I bought this as a last try to fix my unit. I wanted to share my experience with the Eufy S1 Pro after owning two units. Unfortunately, both units had serious issues. The first one developed multiple problems within less than a year: Dirty water tank issues Mop roller lifting motor malfunction Loud and abnormal noise during dust collection Eventually stopped working completely Despite that, I decided to give it another try and purchased a second unit, planning to reuse parts from the first one if needed. However, the second unit failed even faster. After around 2 months, it stopped performing dust suction from the robot to the base station. At this point, I cannot recommend this product. The reliability has been very poor in my experience, especially considering the price. On a positive note, customer support has been responsive and helpful, but unfortunately, the product quality itself did not meet expectations.
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Reviewed in the United States on March 29, 2026

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