S&S CYCLE Evolution-Style Aluminum Cylinders [91-7710]

Description

Cylinder – Evolution Big Twin – Wrinkle Black – Highlighted Fins

• 3-1/2″ Bore cylinders are for big twins with stock, S&S Performance, or Super Stock® heads
• Includes dowel pins
• Made in the U.S.A.
• Individual cylinders and cylinder sets without pistons are bored slightly under normal size and are not honed.