Athena, 3-5/8" cylinder base gasket set. FR/RR .020" RCS

Description

3-5/8" big bore.
Front & rear gasket set.
Type 'A' gasket.
.020" thick RCS (Rubber Coated Steel).
Gasket with an embossed steel core with a .001" thick coating of heat resistant nitrile rubber on both sides.
OEM replacement reference none.

Note: 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 contours 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.

Specifications

Fitment

84-99 Evo Big Twin; 86-22 XL Sportster. With 3-5/8" big bore cylinders (NU)

Part numbers