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27WON Front Mount Intercooler Kit | 16-21 Civic 1.5T, Si

27WON Front Mount Intercooler Kit | 16-21 Civic 1.5T, Si

Regular price $932.71 USD
Regular price Sale price $932.71 USD
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Unity Performance is the exclusive Canadian Dealer for all 27WON Performance Products in Canada! US folks, please continue to purchase through 27WON directly.



  • 2016 - 2021 Honda Civic 1.5T (Coupe, Hatch, Sedan)
  • 2017 - 2020 Honda Civic Si (Coupe, Sedan)


Engine performance really comes down to one simple thing …FLOW. The more efficiently the engine can move air in and out from the intake to the exhaust tip the more potential to make power there is.

When Honda developed the 10th Generation Civic and Civic SI they developed an intercooler system that supported their goal - around 200 horsepower. However, as we push for more power we quickly find the intercooler to be a major bottleneck in the engines flow and thus potential power due to poor flow and heat dissipation.

27WON set out to design a performance front mount intercooler and piping system (FMIC) for the 2016+ Honda Civic 1.5T that provided the best balance in flow and thermal efficiency. Read below to see how 27WON continues to REDEFINE The Aftermarket with their FMIC kit.

We carefully studied the entire OEM intercooler system. From these hours of research we found several ways to that we could REDEFINE what a performance FMIC could be for your 10th Gen Civic.

From the aluminum cast end tanks with integrated air-foils to the 4-ply wire reinforced silicone we found opportunities for improvement in all areas of this kit.


Testing* was performed on 27won's 2018 SI sedan which is fully bolted including a W1 turbo kit. The only variable in the above testing was 27WON's front mount intercooler system. We have three graphs shown here for a very good reason.


  • Red Line is the OEM intercooler system tuned on 92oct fuel
  • Green Line is the drop-in result of the 27WON Intercooler System. No tuning changes were made. Drop-in results alone provided 20whp & 25wtq!
  • Magenta Line is the tune optimized for the 27WON Intercooler System. With the increased efficiency and capacity of the 27WON FMIC Kit we were able to safely add more ignition advance to increase power under the curve. This was another 15whp!


When it comes to intercoolers…size matters. The frontal area of the core is the most critical dimension to increase the efficient cooling capacity of the intercooler. The OE 4.37in height is not sufficient, we increased the height 41% to 6.50in with width nearly unchanged. This maximized the frontal area behind the grill. Thickness was increased from 2.52in to 3.70in, a 47% increase. This resulted in a total core volume increase of 120%.


The 27WON Intercooler kit comes complete with intercooler, piping, and silicone couplers. The piping was specifically designed for the L15 engine found in the 10th Gen SI and Base model Civics.

A single seamless 2.25 inch pipe is used on the “hotside” and a 2.75 inch pipe is used on the “coldside”. Staggered pipe sizes were selected to optimize for power and drive-ability. The relatively smaller 2.25 inch hotside pipe will still support well over 500whp and its smaller size helps move the hot boosted airflow through the intercooler more quickly thus improving response. The larger 2.75 inch coldside pipe was also optimized to create a large “plenum” of air just ahead of the throttle body. This helps reduce turbo lag and improve transient response.

The single pipe inlet and outlet minimizes the number of couplers and thus the number of potential boost leaks. Integrated into every coldside pipe is a single 1/8-27 NPT port for methanol auxiliary cooling/fueling.


The 27WON silicone couplers are constructed of 4-ply reinforced silicone and the team didn't stop there. Integrated wire reinforcement to these couplers were added.

This drastically increases the strength of the silicone coupler while still allowing for proper flex and bending for engine movement.


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Customer Reviews

Based on 1 review
Bryce Maslen
Best intercooler on the market

Have been loving everything about it so far and looks super good to boot. A must needed mod for any 10th gen civic car feels like new and puts an even bigger smile on my face now! Also extremely easy to install even on the driveway.