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Start ShoppingCometic C7231 High Performance Top End Gasket Kit - Durable Seals for Off-Road Motorcycles
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Description
Ensure peak engine performance and reliability with Cometic's High Performance Top End Gasket Kit (C7231). Designed for off-road motorcycles, this premium gasket set delivers exceptional sealing capabilities to withstand extreme riding conditions and prolonged use.
Key Features
- High-Performance Materials: Made from advanced composite materials for superior heat resistance and durability in high-stress engine environments.
- Comprehensive Kit: Includes all necessary head gaskets and associated top-end seals for complete engine sealing solutions.
- USA Manufacturing: Precision-engineered in the USA for consistent quality and compatibility with American-built powersports engines.
- Off-Road Optimization: Specifically engineered for demanding off-road applications to handle vibration, temperature extremes, and high-performance modifications.
Why Choose This Product
Cometic's C7231 kit offers unmatched reliability for powersports enthusiasts. Its durable construction reduces the risk of leaks and engine damage, while the complete sealing solution simplifies maintenance. The USA-made quality ensures precise fitment and long-term performance, making it an essential upgrade for riders seeking maximum engine efficiency and peace of mind on the trail.
SKU:
GM9C5A687C
MPN:
C7231
UPC:
191070011147
Category:
Gaskets/Seals
Brand:
Cometic
Stock:
Only 4 left!
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Ensure peak engine performance and reliability with Cometic's High Performance Top End Gasket Kit (C7231). Designed for off-road motorcycles, this premium gasket set delivers exceptional sealing capabilities to withstand extreme riding conditions and prolonged use.
Key Features
- High-Performance Materials: Made from advanced composite materials for superior heat resistance and durability in high-stress engine environments.
- Comprehensive Kit: Includes all necessary head gaskets and associated top-end seals for complete engine sealing solutions.
- USA Manufacturing: Precision-engineered in the USA for consistent quality and compatibility with American-built powersports engines.
- Off-Road Optimization: Specifically engineered for demanding off-road applications to handle vibration, temperature extremes, and high-performance modifications.
Why Choose This Product
Cometic's C7231 kit offers unmatched reliability for powersports enthusiasts. Its durable construction reduces the risk of leaks and engine damage, while the complete sealing solution simplifies maintenance. The USA-made quality ensures precise fitment and long-term performance, making it an essential upgrade for riders seeking maximum engine efficiency and peace of mind on the trail.| SKU | GM9C5A687C |
|---|---|
| MPN | C7231 |
| UPC/GTIN | 191070011147 |
| Brand | Cometic |
| Category | Gaskets/Seals |
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Featured Review
| Make | Model | Years |
|---|---|---|
| Kawasaki | KX250F | 2005-2008 |
Frequently Asked Questions
According to Dennis Kirk fitment data, Cometic C7231 is designed for 2005–2008 Kawasaki KX250F models. For any other bike, it will not fit; always confirm by year/make/model before ordering.
It is a high performance top end gasket kit (head and related top‑end gaskets). You still need separate hard parts such as piston, rings, wrist pin, circlips, timing chain, and valve components if you are replacing them.
For modern Cometic multi‑layer steel (MLS) head gaskets, no additional sealant is typically used; they are designed to be installed on clean, flat, dry surfaces. Only use sealant where the service manual explicitly specifies it (e.g., certain case joints or cam caps).
Cometic performance kits are designed to meet or exceed OEM sealing performance and are widely used in race and high‑performance applications. Many builders choose Cometic for improved durability and sealing under higher cylinder pressures.
Head gaskets and most critical top‑end gaskets are considered single‑use. They should be replaced any time the head is removed to ensure proper sealing and reliability.
Installation Guide
Difficulty
Medium
Est. Time
2 hr 0 min
Tools Required
- Metric socket set
- Metric combination wrenches
- Torque wrench (inch‑lb and/or ft‑lb per service manual)
- Feeler gauges (for valve clearance if adjusted during job)
- Plastic scraper or gasket scraper (non‑marring)
- Brake cleaner or gasket surface cleaner
- Shop rags
- Service manual for torque specs and tightening sequence
Pro Tips
- Carefully clean and inspect head and cylinder surfaces for warpage; lightly check with a straightedge and feeler gauge
- Dry‑fit each gasket to confirm alignment of coolant and oil passages before final assembly
- Use a calibrated torque wrench and tighten the head bolts in multiple stages following the OEM pattern
- Change engine oil and coolant after rebuild to remove any contaminants from the top‑end work
- Let the engine heat‑cycle and cool fully after first start, then recheck for coolant or oil leaks around the head and cylinder
Common Mistakes to Avoid
- Reusing old head bolts or washers when they are stretched or damaged
- Not following the factory tightening sequence and torque specifications for the cylinder head
- Installing gaskets upside‑down or misaligned, blocking oil or coolant passages
- Not fully cleaning old gasket material and residue from head and cylinder surfaces
- Using RTV or sealant where a dry multi‑layer steel (MLS) head gasket is designed to be installed dry
Comparison vs Stock/OEM
Aftermarket performance top‑end gasket kit intended to meet or exceed OEM sealing quality for Kawasaki KX250F 2005–2008.
Improvements
- Performance‑oriented gasket materials designed for high cylinder pressures and race use
- Reputation for strong sealing with properly prepared mating surfaces
- Often chosen by engine builders for modified engines compared with standard OEM gaskets
Considerations
- Must be installed on clean, flat surfaces with correct torque procedure to realize benefits
- Does not include any hard parts such as head bolts; reuse or upgrade those separately per OEM guidance
Durability & Warranty
Expected Lifespan
Comparable to or better than OEM gaskets when installed correctly and used within normal operating conditions; exact hour rating not specified by manufacturer or retailers.
Warranty
Standard Cometic limited warranty against defects in materials and workmanship (no detailed term listed specifically for C7231 on retailer pages).
Maintenance
No direct maintenance; inspect for leaks at service intervals and replace gaskets whenever the cylinder head is removed.
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