Assault Series Derby Cover - 99+ Twin Cam

The Trask Assault Series Derby Cover adds a bold, performance-inspired look to your Harley-Davidson big-twin. Designed for riders who want to show off their go-fast internals, this cover combines style with function.

A clear LEXAN window offers a leak-free view of your clutch system, highlighting the mechanical precision beneath while keeping everything contained. Machined to fit a bolt spacing of 3.75 inches, it installs directly in place of your stock derby cover.

Pair with other Assault Series components like Cam Covers or Air Cleaners to complete your aggressive, custom look.

Features & Benefits:

• Machined aluminum construction for durability and strength
• LEXAN window provides a leak-proof view of the clutch system
• Showcases go-fast internals while maintaining OEM-style fit
• Compatible with ‘99–’14 TC FL, ‘99–’17 Dyna, ‘99–’18 Softail
• Bolt spacing: 3.75 inches
• Proudly made in the USA

Note: Be sure to check the bolt spacing on your primary cover before purchasing.