Cometic 99-01 Yamaha YZ250 250CC O-Ring 2-Cycle Top End Gasket Kits

Today's lightweight engines are producing more horsepower, higher cylinder pressures, clamp loads and extreme temperatures. Our commitment is to provide innovative, quality gaskets while maximizing your engine's power and performance. Cometic's gaskets are proudly made in the USA with materials manufactured on American soil. We are constantly updating and adding models to our ever growing library of gaskets for Powersports, Street Bikes, Snowmobiles, Harley-Davidson and V-Twin applications.

Additional Information

Yamaha 1999-2001 YZ250 Top End Gasket Kit, O-Ring Cylinder Head Gasket

Part Type

Engine Top End Kit

• All of Cometic's gaskets and seals have been tested on both the street and the track as well as vigorous Dyno shakedowns
• No Additional Sealer Needed

Note for Pistons, Rings, Rotors, Rods and engine internals

Unless otherwise specified, some brands supply brake rotors, pistons, strut mounts, rods and rings separately. In some cases, titles may indicate plural, or 'set' - eg the term “ring set” often refers to the rings for a single piston only. If you’re unsure about what’s included with this product, please contact our team for clarification.

Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.

Product Details

Reference Information

Gaskets, Top End Set, Yamaha, Motorcycle, Kit

Cometic Gasket top-end gasket kits contain the most technologically advanced materials available to ensure a critical seal and superior durability. These Cometic Gasket top-end gasket kits come complete with a head gasket, a base gasket, and designated kits include reed, power valve, and exhaust gaskets. Cometic graphite head gaskets are manufactured from non-asbestos, flexible graphite laminated to a stainless steel core, which is impervious to fuels, coolants, and oils.