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Start ShoppingCometic MLS Evo Big Twin/Twin Cam Base Gasket - High-Performance Sealing Solution
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Description
Upgrade your engine's reliability with Cometic's premium MLS base gasket designed for Evo Big Twin and Twin Cam engines. This high-performance solution ensures optimal sealing, durability, and compatibility with demanding power sports applications.
Key Features
- Multi-Layer Steel (MLS) Construction: Provides exceptional heat resistance and sealing integrity for high-output engines.
- 0.010 in. Thickness: Ensures precise compression and leak-free performance in critical engine compartments.
- 3.4375 in. Bore Fitment: Precision-engineered for perfect alignment with factory specifications.
- Lightweight Design: 0.1 lbs reduces stress on engine components without compromising durability.
Why Choose This Product
Engineers at Cometic combine advanced materials with precision manufacturing to deliver a gasket that withstands extreme temperatures and pressures. This MLS solution minimizes maintenance intervals, enhances engine efficiency, and ensures long-term reliability for riders demanding peak performance from their power sports equipment.
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Upgrade your engine's reliability with Cometic's premium MLS base gasket designed for Evo Big Twin and Twin Cam engines. This high-performance solution ensures optimal sealing, durability, and compatibility with demanding power sports applications.
Key Features
- Multi-Layer Steel (MLS) Construction: Provides exceptional heat resistance and sealing integrity for high-output engines.
- 0.010 in. Thickness: Ensures precise compression and leak-free performance in critical engine compartments.
- 3.4375 in. Bore Fitment: Precision-engineered for perfect alignment with factory specifications.
- Lightweight Design: 0.1 lbs reduces stress on engine components without compromising durability.
Why Choose This Product
Engineers at Cometic combine advanced materials with precision manufacturing to deliver a gasket that withstands extreme temperatures and pressures. This MLS solution minimizes maintenance intervals, enhances engine efficiency, and ensures long-term reliability for riders demanding peak performance from their power sports equipment.
| SKU | GM7EC358D6 |
|---|---|
| MPN | C9110-010 |
| Brand | Cometic |
| Category | Gaskets/Seals |
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Featured Review
| Make | Model | Years |
|---|---|---|
| Harley-Davidson | Evo Big Twin | 1986-2017 |
| Harley-Davidson | Twin Cam | 1999-2017 |
Frequently Asked Questions
Yes, C9110-010 fits Twin Cam 88/96 engines with 3.4375" stock bore.
This is a 0.010" MLS gasket, typically used to maintain stock compression height.
Recommend new base gasket studs/nuts and head gaskets if doing full top-end.
Yes, MLS construction handles up to 12:1+ compression ratios well.
Installation Guide
Difficulty
Medium
Est. Time
1 hr 0 min
Tools Required
- torque wrench
- socket set
- gasket scraper
- engine assembly lube
Pro Tips
- Clean cylinder base and case mating surfaces meticulously
- Use assembly lube on both sides
- Follow Harley torque specs exactly: 95-105 ft-lbs for base nuts
Common Mistakes to Avoid
- Not cleaning surfaces thoroughly
- Incorrect torque sequence
- Over-torquing head bolts
Comparison vs Stock/OEM
MLS vs paper/composite - superior sealing and durability
Improvements
- Better heat resistance
- No burn-through
- Handles higher cylinder pressures
Considerations
- Requires perfectly flat surfaces
- More expensive than OEM paper gasket
Durability & Warranty
Expected Lifespan
Engine life (100,000+ miles)
Warranty
1 year Cometic manufacturer defect warranty
Maintenance
Inspect during top-end service; replace if damaged
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