S&S, VALVE SPRING KIT. STD TO .550" LIFT

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

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.

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