Supertech Black Nitride Valves for Acura RSX TSX K20 K24 PTE we also offer the elements

we also offer the elements separately

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FIC High-Z 650CC (IS175-0650H)

2011-2014 Subaru WRX Hatchback

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Supertech Black Nitride Valves for Acura RSX TSX K20 K24 PTE we also offer the elementsSupertech black nitride exhaust and intake valves for K20 K24 Acura RSX and TSX. These valves are available in various sizes to match your head diameter. Sold as a set of 8 or individually as needed. Please do all your research and consult your engine builder if necessary! Black nitride valves are made from one piece forged stainless steel then go through a special hardening process to lessen the friction between the valve and guide. There are a lot