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Both items are used and came off my 2017 Si Sedan. PRL Catted Downpipe, no gaskets no hardware. $400 BC Racing BR Extreme Low Coilovers Custom valved for 12k, 10k Swift Springs 2 dampers show oil leak, you can refer to my previous listing. $500 Buy both items for $800 Local pickup in...

PRICE: $700 FOR SALE: Used set of BC Racing BR Extreme Low Coilovers for 17-21 Civic Si Sedan custom valved for 12k F, 10k R Swift Springs. These have around 20k miles, I’d get them rebuilt or have the dampers replaced. Some more info: - front driver damper was blown from a pothole...

Halfway done with getting my parts off the car and just listing what is currently ready to be picked up: Located in Bay Area 94539. Local pick up only, or buyer pays for shipping. Everything is negotiable within reason. Please PM me with any questions. Thank you. - PRL CATTED DOWNPIPE 3 IN. -...

Does anyone know how a 9.5 +22 compares to a 10 +40? Specifically TE37SL and the face. How do the faces compare, which is more concave? Are they both face 2 concave?

installed my coilovers and I keep getting a clunking on the front driver side. i can feel it through the pedal. i already checked pre load and thats fine. everything is torqued to spec. it clunks when i turn but not as much over bumps. I tried to recreate the sound while the cars jacked up...

For those of you who have installed coilovers, what do you do with the unplugged ads? Electric tape? Protect it from water? Any specific place you zip tie the wires to?

Looking for HFP Sedan Side Skirts for Si in White Orchid Pearl. Located in SF Bay Area. (Only looking to pick up) Seeing if anyone is letting go of a pair before I order online. Thanks.

looking for a set of coilovers and having trouble deciding! I am heavily leaning towards the Fortune Autos since a lot of people praise their dampening and higher quality, but would a set of BC BR or Neomax coilovers with swift springs be better perhaps? (Fortune Auto also has a $100 "quarantine...

Curious to hear some thoughts/opinions... for example: how this affects you (since we all come from different places, backgrounds, etc. I'm a college student in Socal but heading back to the Bay Area for spring break. In-person classes cancelled, finals are online, coachella is...

Now that the Hybrid Shifter is out, is there anyone who can chime in on how it is? Ideally someone who has owned both the Hybrid and Acuity but I feel like that's unlikely. Anything is appreciated, thanks!

https://injen.com/n-15-injen-performance-exhaust-system-for-the-2017-2018-honda-civic-si-l4-1-5l-turbo-sedan-only-part-no-ses1581tt.html Install Video:

https://prlmotorsports.com/2017hondacivicsiamrengineeringcoilovers.aspx available now on PRL. swift spring upgrade, front camber plates, error canceller offered. anyone have any experience with these?

Installed the intake yesterday. Took a little longer than expected as it didn't come with instructions but everything's pretty straightforward. Intake sounds great. Just some questions... 1. pretty loud rattling, can't seem to find where it's coming from though the intake does vibrate quite a...

Anyone have any experience with this company or these coilovers specifically? Saw a user on instagram with these, curious since I haven't seen these being talked about and search did not turn up anything...

Has anyone bought this or has any insight on these? listed as 17/18 Si specific but part number isn't listed on Ksport website and is different from base civic coilover part number...

https://www.mishimoto.com/honda-civic-15t-2016-performance-intercooler.html Not too sure if anyone brought this up already but didn't find anything. Intercooler now available for pre-sale. includes dyno results. thoughts on this vs. prl?

Hello all, friend borrowed the car for a spin and claimed he “hit a curb while parking.” The picture is from under the car, from just behind the front bumper, right side. Part appears to have a “24” sticker label on it. Hoping its just the plastic, but trying to see if I can replace the part...