In my book this particular piece serves two purposes;

1. It's red, so it's probably good for at least 20hp

2. It's significantly easier to get an accurate reading on the dipstick

Wish it came from the factory with these, easy install, and no more fiddling with the prop rod on a cold winter morning when I'm out of washer fluid freezing my fingers off.

Picked these up from Humza back in June after hearing about the specs. These are extremely light and functional. Love that the centre bore is the exact size for the typeS/R platform (no need for hubscentric rings).

Meaty fitment and no rubbing: 285/35 ps4s

Amazing product. Made in U.S.A. Quick shipping. A+++

This intake sounds way better than stock whether the lid is on or off. Obviously its quieter with the lid on but its still noticeable. Lid off you can hear a very audible whoooosh when ripping it and I guarantee it will make you smile. Install wasn't bad at all, just take your time and everything will work out.
27WON is really changing the game with the quality of the parts they're making for these cars and I look forward to installing more of their products on my Si.
It's always a pleasure buying from the guys at Unity, they're very accomodating, friendly and always willing to give advice for whatever type of build your going for.
I wouldn't wanna shop anywhere else but here. Thanks again you guys.

The cap looks great, looks much better than the OEM cap!

Why waste your time with other radiators when you get this very sleek and well made designed triple pass radiator. During track testing at Streets of Willow (CW) 80F Ambient consistent of 1:25 times, coolant was staying well around 196F-200F on 1 cold lap and 3 hot laps. Mind you I am making more power from the last time I came to the track and it still cools better than the last radiator I had installed. Including with the transmission cooler, this has kept me at a peace of mind especially with a turbo civic can get really hot. This is the RADIATOR you should get to be end of all other radiators.

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Amazing Product! Well made and came packaged great. Owner is awesome also!

Amazing product. 100% Recommend! Owner is amazing also!

Side Marker Lights | 16-21 Civic

The 27won SRI is great and gives you all the great turbo noises! Install was a breeze. Parts are quality. If you want to hear induction noises this is the intake for you.

Got the prl intercooler installed this year. Able to get it tuned at a higher boost. Highly recommended upgrade

Transmission feels more direct than before. Great improvement

Transmission feels more direct than before. Great improvement