James, cylinder base gasket FR/RR. .020" paper

84-99 Evo Big Twin (NU)

Type A'. Front & rear .020" thick fiber reinforced paper. Final crush .016". OEM replacement reference 16774-84A. Type A' gasket explained: Type A' was introduced on the 1984 Evolution Big Twin models, and can be used on all of the 84-99 1340cc Evo models and will follow the contoures of the cylinder base perfectly. They will fit 86-22 Evo XL, but stick out at the cylinder base. This can be a problem with silicone beaded base gaskets. Both type 'A' and type 'B' have identical inner bore diameter, oil hole and stud hole locations. Gaskets for front & rear cylinder are identical. Only difference between the 'A' & 'B' gaskets is the outside perimeter.