Harddrive SS Transmission Sprocket - 25T Standard Offset - 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.
This Harddrive SS transmission sprocket is engineered for 1994-2006 Harley-Davidson models undergoing a belt-to-chain conversion. With 25 teeth and a standard offset, it's built to deliver reliable power to your 530 chain drive.
Why riders pick this
- Hardened carburized steel for extreme durability
- Corrosion-resistant black oxide finish
- Standard offset for precise chain alignment
- Optimized spline engagement for secure fit
- Designed for 1994-2006 Harley-Davidson chain conversions
For V-twin riders looking to convert their 1994-2006 Harley-Davidson to a more robust 530 chain drive, this Harddrive SS transmission sprocket is a crucial component. CNC machined from carburized steel and hardened for superior impact and wear resistance, it replaces your OEM belt pulley. The 25-tooth count and standard offset are precisely configured to ensure optimal chain alignment, delivering power effectively to the rear wheel.
Heavy-Duty Performance for Classic Harley Models
- CNC machined from hardened carburized steel for maximum durability
- Black oxide finish provides excellent corrosion resistance
- Standard offset ensures accurate chain alignment for 530 chain conversions
- Optimum spline-to-shaft contact geometry for secure power delivery
The Core of Your Chain Drive Conversion
A chain conversion offers significant advantages in strength and gearing flexibility for performance builds on 1994-2006 Harley-Davidson Touring, Softail, and Dyna models. This Harddrive SS 25-tooth transmission sprocket is engineered to be a reliable part of that upgrade. Always verify the offset and tooth count against your specific conversion kit and rear sprocket to ensure perfect fitment and unleash your drivetrain's full potential.
Specifications
- Brand: Harddrive
- Manufacturer Part #: CST-2065_WPS:25.2
- UPC: 191361511189
- Tooth Count: 25
- Offset: Standard
- Material: Carburized steel, hardened
- Finish: Black oxide
- Weight: 1.5 lbs
- Dimensions: 6 in L × 6 in W × 4 in H
- Country of Origin: Poland
Common questions
What is this 25-tooth sprocket used for?
This 25-tooth transmission sprocket is installed in belt-to-chain conversion builds on 1994-2006 V-twin models to transfer power from the engine to a 530 chain drive system.
What offset does this 25T sprocket have?
This Harddrive SS transmission sprocket features a standard offset, which is designed to provide proper rear sprocket alignment in many belt-to-chain conversion kits for 1994-2006 models.
Will this fit my 2005 Street Glide?
This sprocket is designed for 1994-2006 Harley-Davidson Touring, Softail, and Dyna models undergoing belt-to-chain conversions. Please confirm the standard offset and tooth count match your specific conversion kit before ordering.
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 | 820-51631 |
| WEIGHT | 1.5 lb |
