Rapid Fill Derby Cover with Window (Coming Soon / April 2025

Get a clear view of your clutch in action with the ultimate Rapid Fill Derby Cover for Harley-Davidson riders who appreciate both function and style. Featuring a high-strength polycarbonate window, that lets you see inside your primary while maintaining the durability needed for the road. 

Precision CNC-machined from 6061 aluminum, this cover is built for strength and performance. The impact-resistant, UV-protected, and hard-coated polycarbonate lens ensures long-lasting clarity, resisting scratches, warpage, and cracks. Whether you're showcasing your high-performance clutch or just want a unique look, the new Rapid Fill delivers visibility without compromise. 

Features:

Clear polycarbonate, CNC machined in house for a perfect fit - Watch your clutch in motion inside the primary. 

CNC-machined aluminum construction- Durable, lightweight, and built to last. 

Sanpietro Designed Gasket - Crafted from the Finest Material for a Leak-Proof Seal 

Premium finishes- Available in gloss black powdercoat, matte black hard coat anodizing, or raw machined aluminum.

Corrosion resistant hardware- We use only the best A4 Stainless Steel fasteners for enhanced durability. 

Direct fit- Engineered for seamless installation

Upgrade your ride- a derby cover that's built to perform and designed to be seen. 

The fitment guide below is not always accurate. So please, MEASURE YOUR COVER before ordering. NOT COMPATIBLE WITH LOCK-UP PRESSURE PLATES. 

- Fits 2019 or newer, Milwaukee 8 softail models with the 6.4" 5-hole cover. 2018 was a crossover year so some models use the 6.4" and others use the 7.25".

- Fits 2017 or newer, Milwaukee 8 Touring. Street Glide, Road Glide, Tour Glide and Road King with the 7.75" 5-hole cover.  

- Fits 1999-2017 Twin Cam. Touring, Softail and Dyna with the 7.25" 5-hole cover.        Excludes '16/'17 Touring

- Fits last year of the Evo (1999) with 7.25" 5-hole cover.  

- Fits some 2018 Softail models equipped with the new Milwaukee 8 engine and twin cam primary cover. 7.25" 5-hole derby cover (Measure if unsure).  

INCLUDES

-James Gasket included with M8 touring and twin cam covers only (replaces the oem o-ring)

-Anodized 6061 3/4-16 oil fill plug