Supertech valves

Price is for 1 valve

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 89-93 Miata 1.6   86-89 323, 323GTX Familia

• Stainless Steel for high temp operation and corrosion resistance
• Nitrided stems for low friction and reduced wear

Options:

+1mm oversize diameter for heavily ported heads

Back and undercut intake for increased flow

Longer stem length for smaller than OEM 36mm diameter base circle cams