✓ VERIFIED
Jan 20, 2021
5 stars! fit perfect! snug enough to hold its self in place while installing exhaust, but not so tight as to cause gasket damage when inserting into place.
COMETIC
SKU: 68-9750F
Cometic Evo Big Twin EST Gasket Kit - Harley Evolution Big Twin
$353.56
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About Cometic
Cometic Gasket manufactures multi-layer steel head gaskets and complete gasket kits in Concord, Ohio. On a built V-twin running higher compression or a big-bore kit, the MLS head gasket is what keeps the top end sealed — which is why Cometic is the default spec on so many engine builds.
When it's time for a comprehensive engine overhaul on your Evo Big Twin, a reliable gasket kit is non-negotiable. This Cometic Evo Big Twin EST Gasket Kit provides every gasket, seal, washer, and O-ring needed for a complete rebuild of your V-twin engine. It's engineered for dependable sealing, even under high-performance conditions.
Why riders pick this
- Complete engine overhaul kit for Evo Big Twin
- MLS head gaskets for maximum sealing
- Steel Viton-coated base gaskets
- Blue Viton valve stem seals included
- All gaskets, seals, and O-rings for rebuild
This Cometic Evo Big Twin EST Gasket Kit is designed to facilitate a complete engine overhaul on Harley-Davidson Evolution Big Twin V-twins. It features advanced Multi-Layer Steel (MLS) head gaskets, steel Viton-coated base gaskets, and blue Viton valve stem seals. These premium components ensure superior sealing performance and durability, crucial for maintaining engine integrity and preventing leaks across all critical areas of your engine.
Enhanced Sealing for Demanding Rides
- MLS head gaskets provide robust sealing under extreme combustion pressures
- Steel Viton-coated base gaskets offer enhanced resistance to heat and chemicals
- Blue Viton valve stem seals help maintain consistent oil control
- AFM material construction ensures reliable sealing for various engine components
- Complete overhaul kit includes all gaskets and seals for a total engine refresh
Rebuild Your Evo with Confidence
Whether you're performing a full restoration or addressing engine wear, this Cometic gasket kit gives you the components you need for a professional-grade rebuild. The comprehensive nature of the kit means you have all the necessary sealing elements at your fingertips, reducing delays in your project. Invest in quality and ensure your Evo Big Twin delivers reliable performance for years to come.
Specifications
- Brand: Cometic
- Manufacturer Part #: C9750F
- Weight: 1.91 lbs
Common questions
What is included in this Cometic gasket kit?
This kit contains every gasket, seal, washer, and O-ring needed for a complete engine overhaul on Evo Big Twin engines, including MLS head gaskets and Viton seals.
Can I use individual components from this kit for a partial rebuild?
Yes, while designed for a complete overhaul, the kit contains individual components, allowing you to use only the specific gaskets or seals you need for a partial replacement.
Are these Cometic gaskets an improvement over OEM?
Cometic's use of advanced MLS and Viton materials is engineered to provide performance and reliability that meets or exceeds OEM specifications, especially under high-performance conditions.
Ordering from Vtwinbikers
- Brand new, sourced through authorized US distribution — never used, never grey-market.
- Not sure it fits? Use Shop by Bike to filter by your year and model, or email us and we will confirm before you order.
- Harley-Davidson and Indian Motorcycle is all we do, so you are talking to people who ride what you ride.
| BRAND | Cometic |
| TYPE | Gaskets/Seals |
| SKU | 68-9750F |
| WEIGHT | 1.91 lb |
Please contact us to confirm fitment for your specific motorcycle, or check the product title for compatibility notes.
CUSTOMER REVIEWS
4.84
61 RATINGS
5★
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✓ VERIFIED
Mar 25, 2022
I was shiped only one gasket. didnt i need 2?
✓ VERIFIED
Nov 3, 2021
Perfect fit, excellent choice for replacing the OE PART
✓ VERIFIED
May 19, 2026
Exactly what I was looking for
Perfect fit and great price
✓ VERIFIED
Apr 5, 2026
Im going to order more stuff!!!
The donut was exactly as pictured online.The item was delivered faster than anything I've received that I can remember, except maybe Starbucks.Thats how fast it hit my doorstep.No problems whatsoever.
✓ VERIFIED
Feb 11, 2026
Won’t buy anything else
Good product only one that doesn’t get blown out
