S&S Cycle 91-9021 S&S Cycle 66-84 BT 3-1/2in Bore 5.330in Cylinder Set

This 3-1/2" bore gloss black cylinder set is for 1966-'84 80" big twins and stock bore strokers. They are 5.330" in length and are made from high strength engineering-grade grey cast iron. They offer excellent wear resistance and a durable powdercoat finish.Individual cylinders and cylinder sets without pistons are bored slightly under normal size and are not honed.

Fitment

Year(s)	Make	Model Code	Model
1966-1984	Harley-Davidson	—	Big Twin