Oh. My. Lord. I was so unprepared for this install. I've done several sway bars before. But this is a LOT. To start the instructions are incredibly vague. And many steps are "do this"or "drill that hole", but then when you go to do it. It's incredible weird and awkward and not at all how the pictures are showing. After that is the questionable fit. Even with the extra spacers (which it says are optional to install on SIs) it comes horrifyingly close to the lower control arm mounts. The instructions also tell you to install the spacers off set to the bottom of the OE mounts. This is impossible as the holes do not even come to lining up(as said and shown in the instructions), and the extra supplied screw for this is nowhere near the right size. The holes in the spacers are also too small to fit the OE hardware that the directions tell you to use. The wholes are also oblong so you can adjust up and down, so you can not easily drill them large. I had hand file the holes larger. It also has you instal extra support brackets where the end links connect to the lower control arms. This requires drilling an additional hole. It is absolutely impossible to get a drill into the required position/angle. You're a good 30 degrees off from what you want. The metal here is also already double laird and very hard. Or at least I broke a DeWalt drill bit (nothing amazing , but it's not harbor freight ya know), and bent another. The hole is also going directly through a factory weld, adding to the impossibleity of drillimg the hole properly. Also, because you have to drill at a janky angle, you have to file the hole larger so the bolt can pass through straight. You now are also leaving bare metal exposed. All to add a reinforcement plate that's so soft you can crush the metal even when using the supplied washers. I can't speak for certain, but I feel like this step in particular is a total waist. Possibly compromising the OE part, so that you can under-reenforce it? Personal I wish I didn't drill those holes and took my chances with the OE mounts. It's my daily tho, and I'm not planning on tracking the car aggressively. The instructions for this above part are also verbatim "mark hole location and use a 11/32 drill bit to drill a hole" that's it. The quality of the actual sway bar itself and the end links seem very high, and I'm praying it functions well enough to justify this install. Those are the only two reasons for the 2 stars over 1. But the fit and extra hardware are the quality you would expect from no name eBay parts from 10 years ago. Maybe I'm just inept. But a long with this install, I also did coilovers, front ball joints, rear camber arms, and brake rotors/pads/steel lines/fluid. And without being hyperbolic or sarcastic in any way. The sway bar was half of the time it took to install everything. This is also obviously just about the product. K series parts have been great themselves. This was done on a (formerly) bone stock 2014 Civic Si. Good luck.

This complete kit, paired with the OEM sizing in the front of the car completely transforms the handling of the car!! Highly recommended to pair with a set of Whiteline 24mm Swaybar Collar Locks, and you're all set!!