08/11/2026
These are not our old side fins. Not even close… What you are looking at are our final production prototype Vented Side Fins, shown here on our all new chassis mounted FL5 Honda Civic Type R Front Splitter built in collaboration with 4th to 5th Automotive. And they are a complete rethink of what a side fin should do.
Designed in house by our motorsport engineer, built from carbon fiber reinforced plastic. Extremely light, excellent UV resistance, great impact resistance. These are built for actual track use, not just to look the part.
The function is where it gets interesting. Three large vents toward the rear of the fin direct airflow out and around the wheel, actively pulling hot brake air out of the wheel well and channeling it down the side of the car. There is also a 90 degree spat built into the design that blocks airflow from getting trapped behind the tire where it protrudes from the bumper, forcing it cleanly around the wheel instead. Every vent and every angle is there for a reason.
Hardware is recessed directly into custom hex holes that are machined to hold 10mm locking nuts flush. No separate L brackets, no extra hardware mess. Just a clean, simple install.
Here is the best part: these will be available for every splitter we make. If you are already running our standard side fins, GT350R side fins, S650 side fins, or any other variant, we will have a retrofit option for your setup.
Pre orders are open right now for our social media community first. DM us or email [email protected] and we will send you a payment link to lock yours in. Free shipping, as always.
Scroll to the last photo to see them fitted on the FL5 Type R splitter. We have a lot coming. Designed in house, made in America.