520-112 O-Ring Drive Chain for Yamaha YZ125 1986-1988 YZ 125

O-Ring Drive Chain for Yamaha YZ125

This 520-112 O-ring drive chain is a 112-link sealed replacement chain built to transfer rear wheel power on 1986, 1987, and 1988 Yamaha YZ125 models.

Overview

This 520-112 O-ring drive chain is a sealed replacement designed for riders maintaining the drivetrain on their 1986-1988 Yamaha YZ125. The O-ring drive chain uses sealed rollers to hold lubricant in and keep grit out, which helps extend chain life between adjustments. It is suited to riders who want durable power transfer for repeated off-road use.

Built For Performance

• 520 pitch sized for the YZ125 drivetrain
• 112 links for correct length on the specified years
• O-ring seals retain lubricant and block contaminants
• Sealed roller design helps reduce wear between services
• Built to handle the loads of two-stroke motocross use

Fits These Machines

• for Yamaha YZ125 1986
• for Yamaha YZ125 1987
• for Yamaha YZ125 1988

On-The-Job Use

• Motocross track riding
• Trail and off-road riding
• Routine drivetrain replacement
• Rebuilding a worn rear drive setup

Specs At A Glance

Good To Know

Q: What advantage does an O-ring chain offer over a standard chain? A: O-ring chains seal lubricant inside the rollers and keep dirt out, which typically extends service life and reduces how often you need to lubricate.

Q: Will this chain fit my YZ125 if I changed the sprocket sizes? A: Link count requirements can change with different sprocket sizes, so verify the needed length for your setup before ordering.

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