520-106 O-Ring Drive Chain for Yamaha YZ400 1976 1977 1978

520-106 O-Ring Drive Chain for Yamaha YZ400

This 520-106 O-Ring Drive Chain is a direct-fit replacement chain for the 1976, 1977, and 1978 Yamaha YZ400, delivering reliable power transfer to the rear wheel.

Overview

This 520-106 O-Ring Drive Chain is built to replace the worn or stretched chain on a Yamaha YZ400 from the 1976 through 1978 model years. The O-ring design seals lubricant in and keeps dirt out, extending chain life on vintage motocross machines. Riders and restorers who want dependable drivetrain performance from a 520-106 O-Ring Drive Chain will find it here.

Built For Performance

• 520 pitch sizing matches the YZ400 drivetrain
• 106 link count suits the 1976 to 1978 YZ400 wheelbase
• O-ring seals retain lubricant and block grit
• Heat-treated steel construction resists stretch
• Roller design keeps engagement smooth under load

Fits These Machines

• for Yamaha YZ400 1976
• for Yamaha YZ400 1977
• for Yamaha YZ400 1978

On-The-Job Use

• Motocross track riding
• Trail and off-road use
• Vintage bike restoration projects
• Routine drivetrain replacement

Specs At A Glance

Good To Know

Q: Does this chain fit my 1978 Yamaha YZ400? A: Yes, this 520-106 chain is sized for the 1976 through 1978 YZ400. Confirm your current sprocket sizes before ordering.

Q: What does the 106 in the part number mean? A: The 106 indicates the number of links in the chain, which matches the YZ400's stock gearing. A different sprocket combination 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.