Harddrive 25T 0.500" Offset Transmission Sprocket - Harley Big Twin 6-Speed
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.
Unlock wider tire options for your Big Twin with the Harddrive 25-tooth offset transmission sprocket. Engineered for Harley-Davidson 6-speed models, this precision-machined sprocket delivers reliable power transfer and enhanced clearance.
Why riders pick this
- 25-tooth count for Big Twin 6-speed transmissions
- Hardened steel teeth resist wear and extend lifespan
- Offset design for wider rear tire clearance
- Direct OEM replacement for easy installation
- Maintains proper chain alignment with wider tires
When you're pushing the limits with a wider rear tire, clearance is king. The Harddrive 25-tooth offset transmission sprocket is purpose-built to give you that extra room on your Harley Big Twin 6-speed. Crafted from hardened steel and precision-machined, it's a direct replacement that helps you achieve your custom look without compromising drivetrain integrity.
Engineered for Performance and Clearance
- 25-tooth count optimized for Big Twin 6-speed transmissions
- Precision-machined hardened steel teeth for superior durability and wear resistance
- Offset design allows for wider tire fitment without primary or transmission modifications
- Direct OEM replacement specification ensures straightforward installation
Build Your Custom Ride
This Harddrive offset sprocket is an essential component for riders looking to run wider rubber on their Harley Touring, Softail, or Dyna models with a 6-speed transmission. Its robust construction ensures it can handle the demands of the road, making it an ideal choice for performance baggers and custom builds alike. Pair it with a new chain for optimal drivetrain longevity.
Specifications
- Brand: Harddrive
- Manufacturer Part #: 191321
- Teeth: 25
- Chain Pitch: 0.500"
- Engine Type: Big Twin 6-speed
- UPC: 191361169335
- Weight: 1.88 lbs
- Country of Origin: China (Taiwan)
Common questions
Will this sprocket fit my Harley-Davidson Big Twin?
This 25-tooth sprocket is designed for Harley-Davidson Big Twin models equipped with a 6-speed transmission, from 2006 to 2022. Please confirm your bike's exact year and model in our Shop by Bike tool.
What is the benefit of an offset transmission sprocket?
An offset design allows for increased clearance, enabling you to fit a wider rear tire on your motorcycle without needing to modify your primary or transmission housing.
Is this a direct bolt-on replacement?
Yes, this Harddrive transmission sprocket is manufactured to OEM replacement specifications, ensuring a direct fit for compatible Big Twin 6-speed models.
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 | Sprockets |
| SKU | 820-54695 |
| WEIGHT | 1.88 lb |
