Custom H11 head studs Mazdaspeed3/6

Freektune Verified independent store

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Custom 10mm Head studs for the Mazdaspeed3/6. These are the strongest head studs on the market testing 10% stronger than our previous L19 head studs. These studs are made from h11 tool steel. We have tested these in vehicles making up to 800hp. Direct fit, no machining required to the block or cylinder head. Includes ARP nuts and washers. Show more