136T 1-1/2" Rear Drive Belt 40001-85 Fit for Harley-Davidson 1985-1994 FXLR FXR

136T 1-1/2" Rear Drive Belt for Harley-Davidson

This 136-tooth, 1-1/2-inch wide rear drive belt, referenced as OEM cross number 40001-85, transfers power from the transmission to the rear wheel for Harley-Davidson FXLR and FXR models. This rear drive belt replaces a worn or damaged factory belt to ensure dependable operation. The 136T rear drive belt is built for the 1985-1994 FXLR and FXR dyna chassis.

Overview

This 136T rear drive belt is a direct replacement drive component designed for Harley-Davidson FXLR and FXR motorcycles. It serves to transmit engine torque to the rear wheel, delivering consistent power for daily riding. Riders maintaining a 1985-1994 FXLR or FXR will find this belt as a suitable service part.

Built For Performance

• 136-tooth count matches factory gearing for correct final drive ratio
• 1-1/2 inch width provides stable contact with pulleys
• Cord-reinforced construction resists stretching under load
• OEM cross-reference number 40001-85 aids in fitment verification
• Designed to handle high torque output of v-twin engines

Fits These Machines

• for Harley-Davidson FXLR 1985-1994
• for Harley-Davidson FXR 1985-1994

On-The-Job Use

• Replaces worn belt during routine drivetrain service
• Common install during custom rear wheel swaps
• Used for street riding and weekend cruising
• Appropriate for standard weight and lightly loaded bikes

Specs At A Glance

Good To Know

Q: How do I know if this belt fits my FXR? A: Verify your bike is a 1985-1994 FXLR or FXR and that your existing belt has 136 teeth and 1-1/2 inch width. The OEM cross number 40001-85 can also be checked against your service manual.

Q: What are signs my rear drive belt needs replacement? A: Visible cracks, frayed edges, or missing teeth indicate wear, and a loose belt may cause slipping or noise. Replace the belt if you see these conditions to avoid drivetrain failure.

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