S&S Cycle 90-1498 S&S® Super Stock® Stock Bore Band Style Single Plug Cylinder Head Kit for 1979-'84 Big Twins - Natural Aluminum FInish pajama set Custom Dynamics 20402504

Custom Dynamics 20402504

S&S roller rocker arms

Flat Top Handlebars

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S&S Cycle 90-1498 S&S® Super Stock® Stock Bore Band Style Single Plug Cylinder Head Kit for 1979-'84 Big Twins - Natural Aluminum FInish pajama set Custom Dynamics 20402504S&S Cycle 90 1498 S&S Super Stock band style cylinder heads for 1979 '84 HD big twins feature a stock like appearance, but flow much better than stock heads. Heads come assembled with premium valves and S&S valve springs that can handle cams with lifts up to . 590". These heads are machined for onespark plug per head and accept stock bore 74" or 80" cylinders. These cylinder heads are original equipment on S&S SH Series engines, and are a great