520-90 Drive Chain for Yamaha YZ100 1976-1977 YZ 100

520-90 Drive Chain for Yamaha YZ100

This 520-90 drive chain is a direct replacement chain sized for the Yamaha YZ100, delivering reliable power transfer from engine to rear wheel for 1976-1977 models.

Overview

The 520-90 drive chain is a wear item built to keep the YZ100 transferring power cleanly to the rear wheel. Riders running a 1976-1977 Yamaha YZ100 will find this chain sized to match the stock 520 pitch and 90-link length. It is intended for riders doing routine drivetrain maintenance or replacing a stretched chain.

Built For Performance

• 520 pitch sizing matches the YZ100 stock drivetrain
• 90-link length fits the 1976-1977 YZ100 swingarm and sprocket setup
• Steel construction resists stretch under load
• Roller design keeps friction low across the sprockets
• Pre-stretched during manufacturing to reduce break-in adjustment

Fits These Machines

• for Yamaha YZ100 1976
• for Yamaha YZ100 1977

On-The-Job Use

• Trail riding on older two-stroke motocross machines
• Track days on vintage-class bikes
• Restoration projects returning a YZ100 to running condition
• Routine drivetrain refresh when the old chain has stretched

Specs At A Glance

Good To Know

Q: Do I need to change the sprockets at the same time? A: It is good practice to inspect both sprockets when replacing the chain. Worn sprocket teeth will quickly wear out a new chain.

Q: How often should chain tension be checked? A: Check tension before each ride and adjust to the spec in your Yamaha service manual. A properly tensioned chain lasts far longer.

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