Harddrive 21T Offset Transmission Sprocket - Harley Sportster XL
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.
Equip your Sportster XL with the Harddrive 21-tooth offset transmission sprocket to open up possibilities for wider rear tires. This precision-machined component ensures durable performance and the necessary clearance for your custom build.
Why riders pick this
- 21-tooth count for Harley Sportster XL
- Hardened steel teeth for superior durability
- Offset design for wider rear tire clearance
- Direct OEM replacement for easy installation
- Maintains proper chain alignment
For Sportster riders aiming for a more aggressive stance with wider rear rubber, the Harddrive 21-tooth offset transmission sprocket is an essential upgrade. Crafted with precision-machined hardened steel teeth, this sprocket is designed for exceptional durability and reliable power transfer. The integrated offset provides critical clearance, allowing you to fit a wider tire without the need for extensive primary or transmission modifications.
Engineered for Sportster Performance and Clearance
- 21-tooth count, an ideal standard replacement for Sportster XL models
- Precision-machined hardened teeth for extended wear resistance
- Offset design provides crucial clearance for wider rear tires
- Direct OEM replacement specification ensures a straightforward installation
Customizing Your Sportster
This Harddrive offset sprocket is a key component for any Sportster owner looking to enhance their bike's appearance and performance with wider tires. Its robust construction ensures it can handle the demands of spirited riding, making it perfect for custom Sportster builds and riders prioritizing both style and function. Consider pairing it with a new chain for optimal drivetrain health and longevity.
Specifications
- Brand: Harddrive
- Manufacturer Part #: 191365
- UPC: 191361169359
- Tooth Count: 21
- Dimensions: 5 in L x 4 in W x 1 in H
- Weight: 1.21 lbs
- Country of Origin: China (Taiwan)
Common questions
Will this sprocket fit my Harley-Davidson Sportster?
This 21-tooth offset transmission sprocket is designed for Harley-Davidson XL Sportster models from 1991 and newer. Please confirm your specific year and model in our Shop by Bike tool.
What is the benefit of an offset sprocket on a Sportster?
The offset design provides additional clearance, allowing you to install a slightly wider rear tire on your Sportster without needing to modify your primary or transmission components.
What tooth count is best for my riding style?
A 21-tooth sprocket is a common replacement. Smaller tooth counts (like 19-20T) can increase top-end speed, while larger counts (like 22-23T) can improve low-end torque. Choose based on your preferred riding characteristics.
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 | 820-54697 |
| WEIGHT | 1.21 lb |
