Harddrive Connecting Rod Assembly with Crank Pin & Nut - Harley Evolution Big Twin
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.
Replace worn or damaged connecting rods in your Harley Evolution Big Twin with this Harddrive assembly. It comes complete with the crank pin and nut, ensuring you have the critical components for a proper rebuild. This assembly is manufactured to meet or exceed OEM specifications for lasting durability.
Why riders pick this
- Heavy-duty replacement for Big Twin engines
- Meets or exceeds OEM specifications for reliability
- Includes crank pin and nut for a complete package
- Ensures proper engine function and longevity
When it's time for a bottom-end refresh on your Harley Evolution Big Twin, a reliable connecting rod assembly is non-negotiable. This Harddrive unit is designed for 1984-1999 Big Twin engines, providing a heavy-duty replacement that stands up to the demands of the road. With the crank pin and nut included, you get a complete solution for restoring your engine's internal integrity.
Engineered for Dependable Service
- Heavy-duty construction for demanding V-twin applications
- Meets or exceeds OEM specifications for a precise fit and reliable operation
- Includes crank pin and nut for a complete installation
- Japanese manufacturing ensures consistent quality
Rebuilding Your Big Twin's Foundation
Connecting rod replacement is a significant engine undertaking, typically part of a full rebuild. This Harddrive assembly provides the core components needed to restore the reciprocating mass of your Evolution engine. While the parts are a direct replacement, the installation process requires specialized tools and expertise, making it a job best handled by an experienced V-twin mechanic.
Specifications
- Brand: Harddrive
- Manufacturer Part #: 81165
- UPC: 191361169755
- Weight: 4.4 lbs
- Country of Origin: Japan
Common questions
Does this connecting rod assembly include the crank pin and nut?
Yes, this Harddrive connecting rod assembly comes complete with the necessary crank pin and nut for installation.
Will this fit my newer Harley-Davidson Big Twin?
No, this particular assembly is designed for 1984-1999 Evolution Big Twin engines. Newer models, including Twin Cam and Milwaukee-Eight, require different connecting rod specifications.
Is professional installation recommended for this part?
Connecting rod replacement involves significant engine disassembly and specialized knowledge of V-twin crankshafts. Professional installation by a qualified mechanic is strongly recommended.
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 | Engine |
| SKU | 820-58007 |
| WEIGHT | 4.4 lb |
