HardDrive Parts Rear Drive Belt For Harley Sportster 883 If your last belt left you stranded, this is the upgrade you want. The HardDrive Rear Drive Belt combines carbon fiber strength with a durable synthetic rubber construction for smooth, quiet power delivery and long-term reliability. Engineered to handle hard miles and tough environments so you can focus on riding, not repairs. Features: 1 1/8 Wide 136 Teeth Replaces OEM 40570-04 Carbon fiber tension member is engineered for higher strength than aramid-based products Specially treated tooth-facing fabric resists punctures and debris Synthetic rubber teeth offer superior strength, low noise, and temperature resistance between -22F and +266F Synthetic rubber backing increases flexibility and width stability Made in the USA