This Derby Cover is a must-have for your Twin Cam closed primary drive.

With our signature Slotted and Speedholes designs, it’s not just a cover—it’s a statement.

The perfect match for our Mid Controls, built for those who ride hard and demand style.

Crafted from premium 6061 aluminum

Fits Harley Davidson Twin Cam 1999-2017

Compatible with O-ring or flat gasket.

OEM reference numbers: 60766-06, 25415-99. 

Fits the following Harley-Davidson models:

Dyna 1999-2017

Softail 1999-2018 (except FLSB)

Touring and Trike 1999-2015

Does not fit models with Narrow-Profile Outer Primary Cover (e.g., '15-later FLHTCUL, FLHTKL, or models equipped with P/N 25700385 or 25700438)