Supertech Opel Vauxhall Calibra Vectral Astra C20XE Valve Springs Retainers KIT.

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New Supertech Performance Dual Valve Spring Ti Retainer and Set Kit. Supertech opel vauxhall calibra vectral astra c20xe valve springs retainers kit valve springs are made with premium superclean chrome silicon vanadium steel alloy for higher performance & durability at high rpms and better memory.

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