Colony 9000-4 Evo Acorn Head Bolt Covers – Harley FL/FX/XL 1984–1999

The Colony 9000-4 Evo acorn head bolt covers are a clean finishing touch for Harley-Davidson Evolution engines. Designed to fit over factory head bolts, these covers help protect the hardware while giving the top end a classic, finished look.

Built to Colony’s standards and made in the USA, these acorn covers are ideal for fresh builds, cleanups, or replacing missing or damaged originals. Simple parts that make a noticeable difference—perfect for riders who want their Evo motor to look right without overdoing it.

Fitment

Harley-Davidson Evolution models

1984–1999

Fits FL, FX, and XL models

Colony part number 9000-4