Harddrive Custom Grooved Derby Cover Chrome - Harley Twin Cam
About Harddrive
Harddrive is the house performance and replacement line built for American V-twins, covering everything from engine hardware and electrical to controls, lighting and chassis parts. The range is aimed squarely at Harley-Davidson and Indian riders who want a direct-fit part without dealer pricing, and it spans decades of model years — from Evolution-era Softails to current Milwaukee-Eight baggers.
Give your Twin Cam primary a custom edge with the Harddrive Custom Grooved Derby Cover. This chrome-plated cover features a raised design with three milled grooves, adding depth and an aggressive styling cue to your engine. It's a direct bolt-on replacement designed to refresh the look of your Harley-Davidson.
Why riders pick this
- Raised design with three aggressive milled grooves
- Brilliant triple chrome-plated finish
- Direct bolt-on replacement for Twin Cam models
- Resists corrosion and maintains its shine
- Complements other chrome engine components
The Harddrive Custom Grooved Derby Cover is engineered for Harley-Davidson Twin Cam riders looking to ditch the stock primary cover for something with more attitude. The prominent raised profile and precision-milled grooves create a focal point on your bike's engine, signaling a commitment to custom detail. Finished in brilliant triple chrome, this derby cover is built to stand out and complement other chrome components on your V-twin.
Elevate Your Engine's Aesthetics
- Features a distinctly raised profile that adds visual depth
- Three precision-milled grooves for an aggressive, custom look
- Triple chrome-plated finish for lasting shine and corrosion resistance
- Direct replacement for a straightforward installation on Twin Cam primaries
- Designed to pair with matching Harddrive points covers for a cohesive style
Effortless Style Upgrade
Installing the Harddrive Custom Grooved Derby Cover is a simple way to make a significant visual impact. This cover bolts directly onto your existing Twin Cam primary, making it an accessible upgrade for any rider. Pair it with a matching Harddrive points cover to complete a unified, custom look across your engine's covers, transforming your V-twin's profile.
Specifications
- Brand: Harddrive
- Manufacturer Part #: B-38-1
- UPC: 191361278990
- Dimensions: 11 in L x 9 in W x 1 in H
- Weight: 0.9 lbs
- Country of Origin: China (Taiwan)
Common questions
Will this derby cover fit my specific Twin Cam model?
This Harddrive Custom Grooved Derby Cover is designed to fit Harley-Davidson Twin Cam engines. Please confirm fitment for your exact year and model using our Shop by Bike tool before ordering.
Is this cover available in other finishes?
Yes, this custom derby cover is also available in a black finish. Please check our catalog for the black version if you prefer that aesthetic.
Do I need any special tools for installation?
Installation is a direct bolt-on replacement using common hand tools. You will likely need to drain your primary fluid and replace the gasket, which are not included.
Ordering from Vtwinbikers
- Brand new, sourced through authorized US distribution — never used, never grey-market.
- Not sure it fits? Use Shop by Bike to filter by your year and model, or email us and we will confirm before you order.
- Harley-Davidson and Indian Motorcycle is all we do, so you are talking to people who ride what you ride.
| BRAND | Harddrive |
| TYPE | Clutch |
| SKU | 820-51870 |
| WEIGHT | 0.9 lb |
