Cometic Top End Gasket Kit for 2002+ Yamaha YZ250

The Cometic C7855 top end gasket kit is a vehicle-specific sealing solution for Yamaha YZ250 and YZ250X 2-stroke engines. Designed as a direct-fit top end gasket kit, it provides the critical gaskets you need to refresh your top end with confidence and restore reliable compression.

Key Benefits

• Complete top-end solution - Provides the key gaskets required for a typical top-end service so you can rebuild your YZ250 or YZ250X top end with one convenient kit.
• O-ring cylinder head gasket - Features an O-ring cylinder head gasket design to help maintain a consistent seal under high cylinder pressure for dependable performance ride after ride.
• Vehicle-specific fitment - Engineered specifically for Yamaha YZ250 (2002 and newer) and YZ250X (2016 and newer) applications to match OEM dimensions and sealing surfaces.
• Meets or exceeds OEM specs - Built to meet or exceed OEM specifications so you can trust the sealing performance in demanding track or trail conditions.
• Made for modern 2-strokes - Designed for today’s 2-stroke riders, supporting hard riding, frequent revving, and regular maintenance intervals.

What's Included

• Top end gasket kit for Yamaha YZ250 / YZ250X (includes cylinder head O-ring style gasket and related top-end gaskets as supplied by Cometic for part number C7855)

Specifications

• Brand: Cometic
• Part Number: C7855
• Kit Type: Top end gasket kit
• Head Gasket Style: O-ring cylinder head gasket
• Weight: 0.13 lbs
• Package Dimensions: 6.05 in L x 7.0 in W x 0.35 in H
• UPC: 191070006310

Fitment

Direct-fit replacement for:

• 2002+ Yamaha YZ250 (top end)
• 2016+ Yamaha YZ250X (top end)

This kit is intended for the engine top end only and is tailored to Yamaha 2-stroke dirt bike applications.

Replaces OEM Part(s): OEM gasket numbers are application-specific; this Cometic C7855 kit is designed as an aftermarket top end replacement kit for the listed Yamaha models.