27WON High Flow Catted Downpipe | 22+ Civic 1.5T & Si, 23+ Integra A-Spec

Must have !

The installation of the 27Won Downpipe is relatively simple on my 2025 Honda Civic Si. I am really satisfied with the product. The quality of the materials is perfect. I kept the original Frontpipe and back exhaust and the sound is really better without being too loud. The performance of the vehicle has also increased. I also added an adapter for the oxygen sensor on the downpipe and in my case I no longer have the CEL problem. I highly recommend the Downpipe upgrade. Thank you Unity for the fast delivery, everything was received in perfect condition.

Very Nice!!

Well made product! Give a nice sound in and out of the car whit stock exhaust! Had an issue whit one of the lower bracket thats didn’t have the right shape but fixed it whit a hammer! In the end I am very happy whit it and I recommend it!!

Downpipe and Front Pipe

Great quality and good installation instruction. I would have given 5 star but there was missing hardware. No lower downpipe brackets so I had to bend and reshape oem brackets to fit new downpipe.