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Over 185,000 Parts and accessories in stock

Free Same-Day Shipping on orders over $89 Tech Support Backed by Years of Riding Experience

Factory Spec Drivetrain for your 1977 Yamaha YZ125

1977 Yamaha

YZ125

Drive Type: Chain
Front Tire Size: 3.00-21
Rear Tire Size: 4.10-18
Spark Plug: B10ES
Chain Size: 520
Chain Links: 104
Front Sprocket/Pulley Teeth: 12
Rear Sprocket/Pulley Teeth: 51

For reference only, please consult your owner’s manual to confirm your sizes

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Factory Spec 525 O-Ring Chain
Sale $99.95
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Factory Spec 520 X-Ring Chain
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Factory Spec Gold 520 NZG Chain
Sale $39.77 - $44.20
$49.11 - 10% Off

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Factory Spec 520 NZ Chain
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