Mountain Machine
Available for twin cam, evo, shovel and Milwaukee eights. If you have any special requests we look forward to hearing from you. 

3D Derby Covers
Be sure to look at the custom gallery page to see more examples of what we can do for you.​
Please allow app. 2-4 weeks for delivery.

These will not fit 2019 softail models with the smaller 6" derby cover

This page was last updated: April 2, 2023
Copyright 2008 Mountain Machine Design

Specializing in custom CNC machining.& Harley Davidson service and parts.

Evergreen, Colorado


Custom engraving available, your design, advertising your business, club logos etc........
Demon 3D derby cover
Wolf 3D derby cover
Bald Eagle 3D derby cover
3D ENGRAVED DERBY COVERS available in 3 or 5 hole
Use your own photos or ours to personalize your ride! 
Machined from solid billet 60/61 aluminum. 

Custom 3D covers Starting from $300. Your photo must be high resolution for best results. 
U.S. Flag 3D derby cover