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Hastings Manufacturing 6949
Hastings 1-Cylinder Ring Set; Hastings 3.25" Standard Bore, 1-Cylinder Ring Set with 1/16" Top Ring and a First Oil Ring is 5/32".
Hastings Manufacturing 9519
Hastings 4-Cylinder Ring Set; Hastings 3.150"/80.00 mm Standard Bore, 4-Cylinder Ring Set with 1.50 mm Top Ring, 1.75 mm Second Ring and a First Oil Ring is 4.00 mm.
Hastings Manufacturing SM8547S020
HASTRACE SINGLE CYL RING SET; Hastings Racing 4.125" Bore +.020" Over Size, Single Cylinder Ring Set with 4/93" Top Ring, 1/16" Second Ring, 4/93" Third Ring and a First Oil Ring is 3/16".
