520-104 O-Ring Drive Chain for Yamaha TT500 1977-1981 TT 490

O-Ring Drive Chain for Yamaha TT500

This 520-104 O-ring drive chain is a replacement chain for the Yamaha TT500, sealing lubricant in and grit out for longer service life.

Overview

This 520-104 O-ring drive chain replaces the stock chain on the Yamaha TT500. The O-ring design traps lubricant at each pin and roller, reducing wear and stretch compared to a standard chain. Riders servicing a TT500 will find this drive chain a durable, direct-fit option.

Built For Performance

• 520 pitch matches the TT500's stock sprocket sizing
• 104 link count sized for the TT500's gearing and swingarm
• O-ring seals retain lubricant and block dirt ingress
• Steel rollers and pins resist fatigue under load
• Pre-stretched to minimize initial break-in adjustment

Fits These Machines

• for Yamaha TT500 1977
• for Yamaha TT500 1978
• for Yamaha TT500 1979
• for Yamaha TT500 1980
• for Yamaha TT500 1981

On-The-Job Use

• Trail and off-road riding in dusty conditions
• Vintage motocross and enduro use
• Drivetrain refresh when the existing chain shows stretch
• Extended rides where reduced maintenance intervals matter

Specs At A Glance

Good To Know

Q: What are the benefits of an O-ring chain? A: O-rings hold lubricant at the pins and keep abrasive dirt out, so the chain stretches more slowly than a standard chain. This means fewer adjustments and longer service life.

Q: Does chain length need to match my gearing? A: Yes, the 104-link count is set for the TT500's stock gearing and swingarm length. Changing sprocket sizes may require a different link count.

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