If you're diving into the world of engine builds, you know how crucial the right gaskets are. That's why I’m excited to share my thoughts on the GrimmSpeed FA20 Head Gasket Sets. These gaskets are a game changer, whether you’re just refreshing your engine or pushing the limits on the track.

What really sets these gaskets apart is their multi-layer steel (MLS) construction. It’s not just a buzzword; this design uses multiple grades of steel to ensure a solid seal around the combustion chamber. When you torque them down, they really come to life, providing optimal sealing that can handle the pressures of high-performance builds. Plus, the Nitrile Rubberized Coating on the top and bottom layers can accommodate a rough surface finish of up to 50 microinches, which is a big deal if your mating surfaces aren’t perfectly smooth. It minimizes the chances of leaks in those non-critical areas.

Another thoughtful feature is the folded stopper layer around the edge. This design helps seal the combustion chamber more effectively, which is especially important for those of us pushing our engines to the limit. I’ve talked to a bunch of engine builders and tuners, and they all agree: having different gasket thickness options is key. That’s why GrimmSpeed offers these in .78mm, 1.05mm, and 1.45mm thicknesses. It lets you fine-tune your setup to get the most out of your engine.

And for those of you with a bit of a wild side, these gaskets are designed to handle up to an 86.5mm bore, accommodating up to 0.5mm overbore. They’re compatible with both the FA20A (like in the WRX) and FA20B (found in the BRZ, FRS, and 86), so whether you’re building a naturally aspirated engine or something that’s turbocharged, these gaskets have got your back.

To sum it up, the GrimmSpeed Head Gaskets carry on the brand’s legacy of quality. They come as a set, specifically cut for the left and right sides, and the die-cut MLS construction ensures a consistent edge finish with a tight manufacturing tolerance of just 0.001 inches. If you want reliability and performance, these gaskets are worth considering.

• Fitments: Subaru BRZ | Scion FRS | Toyota 86 (2013-2020)
• Scion FRS (2013-2016)
• Subaru BRZ (2013-2020)
• Toyota GT-86 (2012-2020)