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Start ShoppingCometic High Performance Top End Gasket Kit - MLS Head Gasket for Engine Rebuilds
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Description
Upgrade your engine's sealing integrity with Cometic's High Performance Top End Gasket Kit (C7094). Designed for power sports engines, this MLS head gasket system delivers exceptional durability and leak-free performance under high cylinder pressure, ensuring optimal engine efficiency and longevity.
Key Features
- Multi-Layer Steel (MLS) Head Gasket: Advanced sealing technology for improved compression and reduced blow-by, ideal for high-performance applications.
- Application-Specific Components: Includes cylinder head, base, intake/exhaust, and valve cover gaskets with Viton/NBR O-rings tailored to your engine's requirements.
- Comprehensive Kit Coverage: Contains all essential seals for top-end rebuilds, including coolant/oil passage O-rings and perimeter seals for complete sealing.
- USA-Made Quality: Precision-engineered in the United States for superior craftsmanship and compatibility with powersports engines.
Why Choose This Product
Cometic's C7094 kit is the trusted choice for racers and performance enthusiasts. Its MLS technology withstands extreme heat and pressure, preventing costly engine failures. The inclusion of application-specific materials ensures perfect fitment and long-term reliability. Whether you're rebuilding a high-compression engine or seeking enhanced sealing, this kit provides the durability and performance needed to keep your power sports machine running at peak efficiency.
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Upgrade your engine's sealing integrity with Cometic's High Performance Top End Gasket Kit (C7094). Designed for power sports engines, this MLS head gasket system delivers exceptional durability and leak-free performance under high cylinder pressure, ensuring optimal engine efficiency and longevity.
Key Features
- Multi-Layer Steel (MLS) Head Gasket: Advanced sealing technology for improved compression and reduced blow-by, ideal for high-performance applications.
- Application-Specific Components: Includes cylinder head, base, intake/exhaust, and valve cover gaskets with Viton/NBR O-rings tailored to your engine's requirements.
- Comprehensive Kit Coverage: Contains all essential seals for top-end rebuilds, including coolant/oil passage O-rings and perimeter seals for complete sealing.
- USA-Made Quality: Precision-engineered in the United States for superior craftsmanship and compatibility with powersports engines.
Why Choose This Product
Cometic's C7094 kit is the trusted choice for racers and performance enthusiasts. Its MLS technology withstands extreme heat and pressure, preventing costly engine failures. The inclusion of application-specific materials ensures perfect fitment and long-term reliability. Whether you're rebuilding a high-compression engine or seeking enhanced sealing, this kit provides the durability and performance needed to keep your power sports machine running at peak efficiency.| SKU | GMA4B2B01D |
|---|---|
| MPN | C7094 |
| UPC/GTIN | 191070007591 |
| Brand | Cometic |
| Category | Gaskets/Seals |
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Featured Review
| Make | Model | Years |
|---|---|---|
| Kawasaki | KX450F | 2013-2016 |
| Kawasaki | KX450 | 2017-2024 |
Frequently Asked Questions
No. C7094 is a high-performance top end gasket kit. It typically includes the head gasket, base gasket, and top-end related seals, but not crankcase or bottom-end gaskets and seals.
Generally, no additional sealant is required or recommended on the MLS head gasket unless specified by the engine manufacturer or Cometic for a particular application. Always follow the service manual and Cometic’s application notes.
MLS performance head gaskets and most fiber/composite gaskets are intended for one-time use. Reusing them can lead to leaks and premature failure.
Compression ratio is affected by head gasket thickness. Cometic offers different thicknesses for many applications, but you must check the specific application data for C7094. In most cases, the kit matches OEM thickness unless specified as a high-compression setup.
The C7094 kit is designed to cover the top-end needs for its specific application, but depending on your engine you may still want fresh valve stem seals, cam chain tensioner gaskets, or other small OEM seals not included. Compare the kit contents to the OEM parts diagram for your model.
Installation Guide
Difficulty
Medium
Est. Time
2 hr 0 min
Tools Required
- Metric socket set and ratchet
- Torque wrench capable of low-range readings (e.g., 5–60 ft-lb depending on application)
- Allen/hex keys or bits (for cam caps/valve cover if applicable)
- Feeler gauges (for checking valve clearance where required)
- Plastic or brass scraper / razor blade (for old gasket removal – used carefully)
- Brake cleaner or contact cleaner (for degreasing gasket surfaces)
- Shop towels / lint-free rags
- Service manual (for torque specs, patterns, and timing marks)
Pro Tips
- Always verify gasket orientation by matching oil/coolant passages and dowel locations before torquing.
- Check cylinder head and cylinder deck for warp with a straightedge and feeler gauge if the old gasket failed.
- Chase and clean head bolt threads; lightly oil under bolt heads and on threads if the manual instructs (or install dry if specified).
- Use a calibrated torque wrench and tighten in stages (for example 1/3, 2/3, then full torque) following the OEM pattern.
- Avoid aggressive sanding on aluminum surfaces; use a plastic scraper and chemical gasket remover to prevent gouges.
- If using aftermarket high-compression pistons, confirm piston-to-head and piston-to-valve clearance with clay or solder before final assembly.
Common Mistakes to Avoid
- Reusing old head or base gaskets instead of the new ones from the kit
- Failing to properly clean and degrease mating surfaces before installation
- Using RTV/silicone sealant on MLS head gaskets where it is not specified by the manufacturer
- Not following the factory torque sequence and torque values for head bolts
- Skipping re-torque (if specified by the OEM or engine builder) after initial heat cycles
- Installing base or head gaskets upside down where there is an orientation
- Not checking cylinder head and cylinder deck flatness when previous gasket failure occurred
Comparison vs Stock/OEM
Cometic’s high-performance MLS top-end kits are generally designed to meet or exceed OEM sealing performance, especially under higher cylinder pressures and temperatures common in racing and high-performance engines.
Improvements
- Multi-layer steel (MLS) head gasket provides improved long-term sealing compared with many OEM composite gaskets when installation and surface prep are correct.
- Better resistance to fretting and micro-leaks at high compression or with performance modifications.
- High-quality materials and tighter tolerances aimed at race and performance applications.
Considerations
- MLS gaskets are more sensitive to surface finish and flatness; cylinder head and deck must be clean, smooth, and within flatness spec.
- Improper installation (incorrect torque, poor surface prep) is more likely to cause issues than with thick, forgiving composite gaskets.
- Some applications may change compression slightly if you choose a non-OEM thickness; verify thickness options for your specific engine.
Durability & Warranty
Expected Lifespan
Comparable to or better than OEM gaskets when installed correctly on flat, clean surfaces and used within intended performance ranges. Often used successfully in race engines for full seasons between tear-downs.
Warranty
Cometic generally warrants its products against defects in materials and workmanship, but coverage does not extend to failures caused by improper installation, surface conditions, or engine tuning issues. Exact terms depend on the distributor and region.
Maintenance
['No routine maintenance on the gasket itself once installed.', 'Monitor for any signs of coolant or oil leaks around the head and base gasket after initial heat cycles.', 'Follow engine builder or OEM recommendations for re-torque (if applicable) after the first few heat cycles.']
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