• Welcome to CivicXI.com everyone!

    If you're joining us from CivicX.com, then you may already have an account here!

    As long as you were registered on CivicX.com as of May 24, 2020 or earlier, then you can simply login here with the same username and password!


  1. 1.5T Function Werk Catback Exhaust for 2022 Civic 1.5T

    Howdy! Was recently recommended by a member on a different website and figured I’d share my (as far as I know) 1 of 1 exhaust. I was hit up online about 2 months ago by a company called FunctionWerk that are local to socal. They needed a 11th gen to test fit some exhaust and I ended up taking it...
  2. 2022+ Honda Civic Exhaust System Development

    Our team is constantly thinking of ways to improve and add more flavor to the PRL Motorsports product line. Over the years we have received an overwhelming amount of inquiries regarding exhaust system development, but unfortunately were not able to take on this workload in the past. Now that our...
  3. PRL Motorsports 11th Gen Civic 1.5T Downpipe & Front Pipe Development

    Over the past few weeks our engineers have used our 3D scan data to develop a downpipe and front pipe upgrade for the 2022 Honda Civic 1.5L Turbo. We were able to put together a street downpipe with high-flow catalytic converter, utilizing cast 304 stainless steel upper and lower pieces that...
  4. Invidia R400 Catback for 2017-2020 Si Sedan

    Invidia R400 Catback exhaust with Triple titanium burnt tips for the Civic Si Sedan. Attaches to front pipe, super easy to install if you have some jack stands and a driveway, easier if you have a lift! Had on the car less than a week, it’s still on the car actually until I get an appointment to...
  5. FS: 27won catless FP/DP for 1.5t

    Selling brand new catless front pipe and down pipe from 27won. Decided to go with another company instead. 550 OBO Northern Virginia Shipping at buyers expense

    Looking to sell a Milltek Non Resonated Exhaust with black cerakote tips for the FK8. Original owner used it for 4 months and sold his FK8. I bought it and used it for a week. Asking $1400CAD PICKED UP. Located in Ottawa, Canada. Willing to ship at buyers expense!
  7. MAPerformance St. Patrick's Day Sale Additional 7% stacked savings on all in-stock MAPerforman

    Quarantine & Build! Unbeatable Price Match Guarantee! Check out all of our deals and lockdown the parts you need today! Shop Now!
  8. Traded in si sedan, ktuner v2 and maperformance street exhaust for sale

    Sold my si, I have a maperformance street exhaust for sedan with polished tips. Asking 400 firm. I live in Delaware and will do in person sales only, I'm willing to meet half way so if you live within 4 hours of southern Delaware we can make it work. PM me with question and thanks for checking...
  9. FS: AWE *Partially New* Civic Type R Touring Edition Exhaust

    These are FLYING out of here, but I was able to find some more lightly used stuff to put a system together to save you guys some money! This is a mostly new AWE Touring Edition Exhaust for FK8 Civic Type R (includes Front Pipe). It contains a lightly used front pipe section off of our Type R...

    Hey guys, when we are finished with development we sell off our systems we've used for photos, testing and sound clips for a really good deal. Here is a chance to save Some serious coin on the best sounding system for the Type R. Made in the USA, this one even gets our lifetime warranty...
  11. FOR SALE: Megan Racing Cat-less down-pipe

    I recently sold my Civic Hatch Sport and got a Type R so i am selling some parts from it. This is an excellent downpipe and performed perfectly with no engine codes. I think it was on my car for about 3 months / around 3k miles or so. This downpipe allows for your turbo to “breathe” better...
  12. WTB: OEM Springs & Upper OEM Intake box

    Looking to buy oem springs, upper intake box, splash guards, and possibly a exhaust for an ex-l. Will pay shipping if needed. Trying to revert my car to stock :)
  13. 2019 stock SI exhaust

    Have a 2019 Civic Si stock exhaust for sale PICKUP ONLY located in NorCal looking for $350 obo. Instagram GlahdoSi for faster response. 500miles
  14. (PRL pipe sold)/OEM Si stuff

    Selling a few things. PayPal only please. PM me for details. Will ship out immediately, but leaving town January 4th-15th. (SOLD) new prl Frontpipe for Civic Si, never installed (only 1 gasket included, probably will have to purchase the accessory kit with the bolts and gaskets from PRL, or...
  15. WTB OEM Exhaust with Muffler Delete

    Looking for an OEM exhaust with a muffler delete already completed. Or if anyone is looking to trade for a 100% stock exhaust to return to stock. Located around Chicago, IL Thanks!
  16. Stock Si Exhaust: Free (Pickup only, Las Vegas)

    PM for details. Just took it off my car. Free for pickup. I'll probably hold onto it for a month or so before I take it to get recycled. THIS EXHAUST SYSTEM DOES NOT INCLUDE THE STOCK DOWNPIPE OR FRONTPIPE. She is big and heavy. Could maybe fit in a Civic with the backseats down and trunk...
  17. 2017+ Civic Si Parts For Sale !!!

    MAP Racing exhaust for sale for a 2017+ Civic Si Coupe! Had on the car for 1 month. Sold the Si and bought a Ctr. I live in MA, so local pickup preferred. $600 GarageLine 25mm spacers also for sale for 2017+ Civic Si! $150 Please help me out!!
  18. WTB

    Looking to get a used cold air intake for my 1.5L hatch !!! Also trying to find an aftermarket exhaust. Willing to pay for shipping
  19. FS: Ultimate Racing Fk8 Exhaust

    Selling my ultimate racing track spec exhaust! It is a great exhaust nice deep tone barely any drone as I had a ultra quiet resonator and muffler welded in both sources from vibrant so excellent quality. The exhaust has 4inch angled tips beautifully made and the exhaust makes nice backfire pops...
  20. FS: Brand new Injen SES1500TT cat-back exhaust for 17-18 Hatchback Sport

    Hey guys, Selling a brand new Injen SES1500TT cat back exhaust for the 2017-2018 Honda Covic Sport hatchback models. It is still in-box from Injen, has never been opened before. If you’d like to see the manufacturer’s page on the item, you can see more details here...