Harley-Davidson DEFIANCE Collection DERBY COVER BLACK 25700963

DEFIANCE DERBY COVER BLACK

FITS 18 LATER FLSB AND LATER 19 SOFTAIL MODELS

The Harley‑Davidson Defiance Collection Derby Cover – Black (Part # 25700963) is a premium OEM accessory that brings a bold, custom‑inspired style upgrade to the primary side of compatible Harley‑Davidson Softail® motorcycles. Part of the Defiance™ Collection of trim pieces, this derby cover is designed to stand out visually while maintaining the precision engineering and quality expected of genuine Harley‑Davidson parts. (Harley-Davidson) Harley-Davidson DEFIANCE Collection DERBY COVER BLACK 25700963

Harley-Davidson DEFIANCE Collection DERBY COVER BLACK 25700963

Distinctive Styling & Premium Finish

At the heart of the Defiance Collection’s appeal is its Black Anodized Machine Cut finish, which creates a rich deep‑black surface that’s both eye‑catching and functional. The cover features deep grooves milled into the anodized surface that expose the underlying aluminum, delivering a striking contrast between the dark outer finish and the shimmering metal beneath. This machine‑cut detailing adds dimension and visual interest, making the derby cover not just a protective piece, but a piece of custom engine art. (Harley-Davidson) Harley-Davidson DEFIANCE Collection DERBY COVER BLACK 25700963

Engineered for Quality & Fit

This derby cover is crafted from exquisitely engineered cast and billet aluminum components, choosing materials that combine structural strength with a lightweight feel. Harley‑Davidson designs these parts side‑by‑side with Original Equipment components to ensure a precise fit when attached to the accessory narrow‑profile primary cover on the supported Softail models. (Harley-Davidson) Harley-Davidson DEFIANCE Collection DERBY COVER BLACK 25700963

The careful machining and attention to detail translate into tight tolerances and seamless integration with the motorcycle’s primary area, giving a bolt‑on fit that looks like it came from the factory. Genuine Harley‑Davidson hardware is included to help ensure correct installation and long‑lasting service life. (Harley-Davidson) Harley-Davidson DEFIANCE Collection DERBY COVER BLACK 25700963

Fitment & Compatibility

Part # 25700963 is engineered for ’18‑later FLSB (Softail Slim) models and ’19‑later Softail models, as well as ’18 Softail motorcycles equipped with the narrow‑profile primary cover types identified by accessory part numbers that include 25700913, 25700937, 25700941, 25701039, 25701040 and others. This ensures that the cover fits specifically with newer Softail primary configurations, making it ideal for modern Milwaukee‑Eight®‑powered builds seeking custom trim. (Harley-Davidson) Harley-Davidson DEFIANCE Collection DERBY COVER BLACK 25700963

Because the Softail platform includes several variations of primary cover designs, verifying exact fitment for your particular year and model before ordering is always recommended. That way, you can be sure this derby cover installs properly without modification and aligns with the bike’s primary housing. (Cantabria Harley Davidson) Harley-Davidson DEFIANCE Collection DERBY COVER BLACK 25700963

Part of a Coordinated Collection

One of the Defiance Derby Cover’s strengths is that it functions as part of a cohesive trim collection. Matching pieces in the Defiance lineup include gloss black primary covers, lower rocker boxes, and transmission top covers (sold separately) — all designed to share shared design motifs such as bold curvature, contrasting machine‑cut details, and complementary finishes. Combined, these parts allow owners to create a unified custom look across the entire engine and drivetrain area. (Harley-Davidson) Harley-Davidson DEFIANCE Collection DERBY COVER BLACK 25700963

Expanding your build with additional Defiance trim pieces helps achieve a harmonized engine theme that’s more than the sum of its parts — a coordinated aesthetic that enhances the visual presence of your Harley‑Davidson motorcycle. (Harley-Davidson) Harley-Davidson DEFIANCE Collection DERBY COVER BLACK 25700963

Installation & Considerations

Installation typically involves removing the stock derby cover and any associated gaskets on the primary assembly. Because engine covers interface with sealed components, new gaskets may be required to ensure a proper oil‑tight seal after installation. Confirming gaskets and torque specifications with a dealership or service manual is recommended to prevent leaks and maximize longevity. (Harley-Davidson) Harley-Davidson DEFIANCE Collection DERBY COVER BLACK 25700963

In summary, the Harley‑Davidson Defiance Collection Derby Cover – Black (25700963) is a striking, performance‑inspired engine trim accessory that blends high‑quality materials, precision engineering, and bold machine‑cut detailing to give your Softail motorcycle a distinctive custom look while maintaining OEM‑level fit and finish. (Harley-Davidson) Harley-Davidson DEFIANCE Collection DERBY COVER BLACK 25700963