S&S S&S, valve spring kit. STD to .550″ lift

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S&S S&S, valve spring kit. STD to .550″ lift

48-66 Panhead; 66-84 Shovelhead (NU). See notes

Kit includes aluminum top collars and valve springs. High performance spring kit that can be used in all applications from stock to .550″ lift cams. Note: Lower collars and valve keys / valve keepers must be re-used. Note: Panhead may require clearancing between rocker cover and top collar. Note: L81-84 Shovelhead must use stock style lower collars (18222-81) or purchase them separately as MCS 982281.