Cometic EST Top End Gasket Kit 98mm – Yamaha YFZ450 (2004–2008)
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Cometic Top End Gasket Kit – 98.00 mm (EST) – Yamaha YFZ450 (2004–2008)
🛠️ Description
Upgrade your Yamaha YFZ450’s sealing performance with the Cometic EST Top End Gasket Kit. Designed with Extreme Sealing Technology (EST), this 98.00 mm kit features multi-layer steel (MLS) gaskets with Viton coating to ensure maximum compression retention, even under high horsepower and cylinder pressure. Made in the USA, it’s built for serious riders who demand long-lasting reliability.
✅ What’s Included
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MLS head gasket (98.00 mm, Viton-coated)
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Base gasket
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Rocker cover gasket
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Cylinder O-rings
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All necessary top end-specific O-rings & seals
📦 Fitment
Yamaha
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YFZ450 (2004–2008)
🛡️ Warranty Info
Cometic gaskets are backed by a manufacturer’s warranty against defects in materials and workmanship. Damage from improper installation or engine failure is not covered.
🔑 Key Features
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EST (Extreme Sealing Technology) design for superior sealing under extreme pressure
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Multi-layer steel construction for even torque load and reduced bore distortion
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Viton-coated layers resist heat, fuel, and chemical breakdown
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Helps maintain piston ring seal for better performance
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Made in the USA
📦 Shipping Information
In-Stock Items:
- Most parts ship next business day
- Modquad parts: Monday–Thursday dispatch
Made-to-Order Items:
- Custom swingarms & A-arms: 2–4 weeks
- EVP exhaust systems: 2–4 weeks
Stock Guarantee: Items marked "In Stock" ship immediately. Made-to-order items are built fresh for you.
Questions? Contact us—we respond within 24 hours.