Harddrive 1-1/8" 139T Carbon Fiber Rear Belt - Harley Touring
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.
Fortify your Harley Touring driveline with the Harddrive 1-1/8" 139T Carbon Fiber Rear Belt. Engineered to withstand the demands of heavy V-twin motorcycles, this belt offers enhanced strength and reduced slip compared to standard aramid belts. It's a critical component for reliable power delivery on the open road.
Why riders pick this
- Carbon fiber reinforced for high-strength performance
- Treated tooth-facing fabric resists punctures and debris
- Synthetic rubber teeth handle wide temperature ranges
- Enhanced flexibility and width stability from synthetic rubber backing
- Made in the USA for quality and durability
The Harddrive 1-1/8" 139T Carbon Fiber Rear Belt is a robust upgrade for your Harley Touring model. Designed to minimize noise and belt slip, this drive belt ensures a smooth and efficient transfer of power from your engine to the rear wheel. Its construction is specifically tailored for riders who demand durability and consistent performance from their V-twin.
Built for Reliability and Performance
- Carbon fiber tension member provides high-strength performance under load
- Specially treated tooth facing resists punctures and road debris
- Synthetic rubber teeth maintain flexibility and temperature stability
- Synthetic rubber backing improves overall flexibility and width stability
- Made in the USA for assured quality and manufacturing standards
Essential for Touring Performance
Whether you're cruising cross-country or navigating city streets, a dependable drive belt is crucial. This Harddrive carbon fiber belt is an excellent choice for replacing a worn OEM belt or upgrading your driveline for better performance. Its design focuses on enduring extreme conditions, making it a reliable component for any Harley Touring rider. Ensure proper tension and alignment for optimal life and performance.
Specifications
- Brand: Harddrive
- Manufacturer Part #: 21192456
- UPC: 191361537660
- Tooth Count: 139
- Length: 14 in
- Width: 14 in
- Weight: 3 lbs
Common questions
What makes this carbon fiber belt superior to aramid belts?
The carbon fiber tension member in this Harddrive belt provides significantly higher structural strength and better performance under extreme load conditions compared to traditional aramid-reinforced belts.
Will this belt fit my specific Harley Touring model?
This belt is designed for Harley Touring models from 2004-2006 that use a 1-1/8" wide, 139-tooth rear belt. Please confirm the OEM part number 40024-04 and your bike's exact specifications using our Shop by Bike tool before ordering.
Does this belt reduce noise compared to other belts?
Yes, the synthetic rubber compound used in the teeth and backing is engineered to minimize noise and belt slip, contributing to a quieter and smoother ride.
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 | Belts |
| SKU | 820-60014 |
| WEIGHT | 3.0 lb |
