Harddrive 1-1/8" 136-Tooth Carbon Fiber Rear Belt - Harley Sportster
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 1-1/8" 136-tooth rear belt is engineered with carbon fiber reinforcement for V-twin motorcycle drive lines. Its synthetic rubber construction resists temperature extremes while delivering low noise and superior strength compared to aramid belts.
Why riders pick this
- Carbon fiber reinforcement for superior strength
- Treated tooth facing resists punctures and debris
- Synthetic rubber for low noise and high strength
- Improved flexibility and width stability
- Wide temperature range for consistent performance
For Sportster riders seeking an upgrade in drivetrain reliability and performance, the Harddrive 1-1/8" 136-tooth rear belt is an excellent choice. Featuring a carbon fiber tension member, this belt offers significantly increased strength and durability over standard aramid belts, making it ideal for both daily riding and more aggressive applications. Its advanced construction ensures consistent power transfer and a longer service life, even under demanding conditions.
Enhanced Performance for Your V-Twin
- Carbon fiber tension member provides superior strength and durability
- Specially treated tooth facing resists punctures and road debris
- Synthetic rubber teeth ensure low noise and high strength
- Synthetic rubber backing improves flexibility and width stability
- Rated for temperature extremes from -30°C to +130°C
Reliable Upgrade for Harley-Davidson Sportster
This Harddrive rear belt is designed as a high-performance replacement for Harley-Davidson Sportster models requiring a 1-1/8" wide, 136-tooth belt. Its robust design makes it a smart investment for riders looking to enhance their bike's drivetrain. Always verify the tooth count and width against your bike's original belt to ensure proper fitment and optimal performance.
Specifications
- Brand: Harddrive
- Manufacturer Part #: 21192455
- UPC: 191361537646
- Tooth Count: 136T
- Length: 14 in
- Width: 1-1/8 in
- Weight: 3 lbs
Common questions
What is the key benefit of carbon fiber reinforcement?
Carbon fiber delivers higher structural strength and superior performance under demanding riding conditions compared to traditional aramid-type belts, resulting in enhanced durability and a longer lifespan.
Will this belt fit my specific Harley Sportster model?
This belt is designed for Harley Sportster models requiring a 1-1/8" wide, 136-tooth rear belt. Please confirm your bike's original equipment part number and specifications using our Shop by Bike tool before ordering.
Can this belt handle extreme weather conditions?
Yes, the synthetic rubber construction is engineered to withstand a wide temperature range, from -30°C to +130°C, ensuring reliable performance in both cold and hot climates.
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 | 820-60012 |
| WEIGHT | 3.0 lb |
