COMETIC
Cometic Top End Gasket Kit for 2002+ Yamaha YZ250
Cometic Top End Gasket Kit for 2002+ Yamaha YZ250
SKU:C7855
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- Ships in 1–2 business days
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Key Features
- Complete top-end sealing kit so you have all critical gaskets in one box for a top-end rebuild
- O-ring cylinder head gasket design helps maintain a consistent seal under high compression for reliable performance
- Vehicle-specific fitment for Yamaha YZ250 and YZ250X helps ensure proper alignment and leak-free installation
- Meets or exceeds OEM specifications to match original performance and durability
- Designed for modern 2-stroke riding demands, supporting aggressive track and trail use
- Compatible with stock cylinders and common performance setups on YZ250 and YZ250X engines
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:
- 2002-2023 Yamaha YZ250 (top end)
- 2016-2023 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.
FAQ
FAQ
Does C7855 fit both the YZ250 and YZ250X?
Yes. It fits the 2002-2023 Yamaha YZ250 and the 2016-2023 YZ250X two-stroke engines.
Is this a top-end or full-engine gasket kit?
Top end only. It includes the O-ring cylinder-head gasket and related top-end gaskets, not bottom-end seals.
Vehicle Fitment
Vehicle Fitment
| Years | Make | Model | Submodel |
|---|---|---|---|
| 2002–2023 | Yamaha | YZ250 | — |
| 2016–2023 | Yamaha | YZ250X | — |
Specifications
Specifications
- weight
- 0.13 lbs
- dimensions
- 6.05 L × 7.0 W × 0.35 H in
Shipping & Returns
Shipping & Returns
Free shipping on orders $250+ (standard items). Oversized items ship at calculated rates.
30-day returns with RMA required. 15% restocking fee, buyer pays return shipping. Defective items returned free with full refund.
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