For Harley Davidson 04-06 Rear Drive Belt 139T 1-1/8" 40024-04 1204-0063

Rear Drive Belt for Harley Davidson

This rear drive belt, 139T 1-1/8", replaces OEM part 40024-04 and cross-references 1204-0063, transferring power from the transmission to the rear wheel on compatible Harley Davidson models from 2004-2006. It is a direct-fit replacement for the original belt, ensuring reliable power delivery and smooth operation.

Overview

This rear drive belt is a 139-tooth, 1-1/8-inch wide belt designed for select Harley Davidson motorcycles from 2004 through 2006. It connects the engine's output to the rear wheel, providing a durable and low-maintenance alternative to chain drive systems. It is built for riders needing a dependable replacement for their original equipment belt, with OEM cross-reference numbers 40024-04 and 1204-0063 for verification.

Built For Performance

• 139-tooth count matches OEM specifications for correct gearing and acceleration
• 1-1/8-inch width provides robust surface area for strength and longevity
• Reinforced rubber construction resists wear, heat, and stretching
• Designed as a direct replacement for OEM part 40024-04
• Precision-molded teeth ensure smooth engagement and quiet operation

Fits These Machines

• for Harley Davidson FLHRI EFI Road King (2004-2006)
• for Harley Davidson models utilizing 40024-04 belt (2004-2006)

On-The-Job Use

• Replaces worn or damaged rear drive belts on highway cruisers
• Suitable for long-distance touring where belt reliability is critical
• Ideal for routine drivetrain maintenance and restoration projects

Specs At A Glance

Good To Know

Q: Will this belt work on my 2005 Road King? A: Yes, it is designed for 2004-2006 models including the FLHRI Road King, but always verify your serial number to confirm fitment.

Q: How do I know this belt is the right width? A: The 1-1/8" width matches the OEM specification, so it will fit pulleys designed for that size.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.