Over 185,000 Parts and accessories in stock

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Tech Support Backed by Years of Riding Experience

Over 185,000 Parts and accessories in stock

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

Cometic Engine for your 1999 Yamaha YZ250

1999 Yamaha

YZ250

Drive Type: Chain
Front Tire Size: 80/100-21
Rear Tire Size: 110/90-19
Spark Plug: BR8EG
Chain Size: 520
Chain Links: 114
Front Sprocket/Pulley Teeth: 14
Rear Sprocket/Pulley Teeth: 50

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

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Cometic Cylinder Works Big Bore Gasket Kit for 1999-2026 Yamaha YZ Dirt Bikes
$108.25

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Part #: 266272 Mfg Part #: 21009-G01

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Cometic Exhaust Port Gasket for 1999-2026 Yamaha YZ Dirt Bikes
$10.95

Part #: 265822 Mfg Part #: C7507EX

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Cometic Bottom End Gasket Kit for 1999-2026 Yamaha YZ Dirt Bikes
$69.14

Part #: 265821 Mfg Part #: C7507BE

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Cometic Top End Gasket Set for 1999-2001 Yamaha YZ250 Dirt Bikes
$43.69

Part #: 262041 Mfg Part #: C7507

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