CP Ring ONLY for SC7021 Pistons

Marsoni

M251S

$30.25

Get it in 3 business days with 1 day shipping. Friday, May 29

CP Ring ONLY for SC7021 PistonsSKU: CPN 3327 CP Ring Pack for SC7021 Pistons Subaru STI 2004 2021 CP CPN 3327 ring pack provides exact fit for SC7021 pistons in Subaru WRX STI EJ257 engines. Built for 2004 2021 models this set ensures reliable compression sealing during extreme boost and high RPM. Perfect for engine rebuilds that demand consistent power delivery and durability. Key Features Exact Piston Match: Sized for 99. 75mm bore SC7021 pistons ensures zero gap issues and full

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Exchange/Return Notes

We offer a 30-day return/exchange service after receiving.
Final sale items are not eligible for returns or exchanges.
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I bought these to try out, and I was shocked to find they worked out better than my silk pillowcases. I have atopic dermatitis, and I need a pillowcase that doesn't irritate my skin. I also am having hot flashes and need something cool on my face. These pillowcases are perfect for both my conditions. I plan to buy more in different colors. My sons and husband also like it since they are always hot.

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Reviewed in the United States on May 30, 2026