420-100 Drive Chain for Yamaha YSR50 YSR 50 1987-1992

420-100 Drive Chain for Yamaha YSR50

This 420-100 drive chain is a direct-fit replacement chain for the Yamaha YSR50, sized at 100 links to restore smooth power transfer from engine to rear wheel.

Overview

This 420-100 drive chain is built to replace a worn or stretched chain on the Yamaha YSR50. As a 420-pitch, 100-link drive chain, it delivers reliable power transfer for riders who depend on their machine for daily commutes and weekend rides. Installing a fresh 420-100 drive chain helps reduce drivetrain noise and restores crisp throttle response.

Built For Performance

• 420-pitch chain size matched to the Yamaha YSR50 drivetrain
• 100-link length for correct fitment without cutting in most applications
• Steel roller construction for dependable wear resistance
• Pre-stretched design helps minimize initial chain stretch
• Roller-sealed pin joints for smooth articulation

Fits These Machines

• for Yamaha YSR50 1987
• for Yamaha YSR50 1988
• for Yamaha YSR50 1989
• for Yamaha YSR50 1990
• for Yamaha YSR50 1991
• for Yamaha YSR50 1992

On-The-Job Use

• Routine drivetrain maintenance on the YSR50
• Replacing a stretched or kinked chain
• Restoring smooth acceleration and power delivery
• Track days and spirited riding where chain reliability matters

Specs At A Glance

Good To Know

Q: Does this chain fit my Yamaha YSR50 without modification? A: It is sized as a 420-100 chain to match the YSR50, but you should confirm link count and pitch against your current setup before ordering.

Q: Should I replace the sprockets at the same time? A: Replacing sprockets alongside the chain is often recommended so worn teeth do not accelerate wear on the new chain.

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