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  MANIFOLD S&S Big Twins '66-'77 & Ironhead '57-'78
S&S Manifold BIG TWINS '66-'77 & Ironhead '57-'78



O-ring style manifold for (74", 80", 84", 88") 1966 - ' 77 Harley-Davidson® big twin and 1957 - ' 78 ironhead Sportster® models with stock 5.330" cylinders and S&S ES, LS, Super A, B, E, Tillotson®, Bendix®, or Keihin® carburetors.

Harley-Davidson® part number 27021-71A.

Note: All reference to H-D® part numbers is for identification purposes only. We in no way are implying that any of S&S Cycle's products are original equipment parts or that they are equivalent to the corresponding H-D® part number shown.

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