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Supertech titanium retainer set of 16 for Honda D-series springs specified as SPR-1003S. Supplied as a complete set, these retainers are intended to match D-series spring geometry across the engine, offering reduced reciprocating mass and consistent keeper engagement to maintain uniform spring seating and valve train behavior across all cylinders.
Supertech Titanium Retainer for Honda D Series Spring SPR-1003S - Set of 16
