Harddrive Cush Drive Chain Conversion Kit 51T Sprocket Silver - Harley Touring & Softail
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.
Unleash more usable torque from your V-twin with the Harddrive Cush Drive Chain Conversion Kit. This comprehensive kit transforms your final drive, optimizing gearing for enhanced mid-range power delivery. It's a robust upgrade for riders looking to maximize their bike's performance.
Why riders pick this
- Boosts mid-range torque with optimized gearing
- Includes 51T rear and 24T transmission sprockets
- CNC-machined billet aluminum hub adapter plate
- Heat-treated steel sprockets for long-term reliability
- Complete kit for a comprehensive final drive conversion
This Harddrive cush drive chain conversion kit is engineered to give your Harley a performance edge. By swapping out your stock final drive for a chain setup, you gain the ability to fine-tune your gearing, and this kit comes set up to deliver a noticeable bump in mid-range grunt. It's a complete package designed for a solid driveline upgrade.
Enhanced Torque and Durability
- Lower gear ratio with 51T rear and 24T transmission sprockets for increased mid-range torque
- CNC-machined billet aluminum hub adapter plate ensures a precise fit
- Heat-treated steel sprockets offer long-lasting durability
- Complete kit includes spacer and bearing for a straightforward conversion
Performance Drivetrain Upgrade
Converting to a chain drive opens up a world of gearing possibilities, and this Harddrive kit provides a strong foundation. It's an ideal upgrade for performance baggers and cruisers, allowing you to tailor your power delivery to your riding style. Pair this with a cam upgrade and a proper dyno tune for a truly transformed ride.
Specifications
- Brand: Harddrive
- Manufacturer Part #: 201400
- UPC: 191361374401
- Rear Sprocket Teeth: 51
- Transmission Sprocket Teeth: 24
- Weight: 4.4 lbs
- Length: 10.6 in
- Width: 10.5 in
- Height: 0.75 in
- Country of Origin: China (Taiwan)
Common questions
What chain do I need to complete this conversion?
You will need a 530-link chain, which is sold separately. You'll size and cut the chain to fit your specific Harley-Davidson model during installation.
Will this conversion kit require a dyno tune?
Changing your bike's gearing can affect engine load and fuel mapping. While not always strictly required, a dyno tune is highly recommended to optimize performance and ensure proper engine operation after a drivetrain conversion.
Is this a bolt-on kit, or does it require extensive modification?
This kit is designed to replace your existing final drive system. It includes the necessary components for the conversion, but installation requires mechanical expertise and may involve adjustments beyond a simple bolt-on part. Consult a qualified mechanic if you are unsure.
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 | 820-51159 |
| WEIGHT | 4.4 lb |
