✓ VERIFIED
May 16, 2026
not what I needed. description wasn't very clear but not worth sending back. oh well just have to be more careful next time
COMETIC
SKU: 68-9886
Cometic Evo Big Twin EST Gasket Kit - Harley Touring, Softail & Dyna
$135.74
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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.
The Cometic Evo Big Twin EST gasket kit includes all gaskets, seals, washers, and O-rings necessary for a complete engine overhaul. Engineered for Evo Big Twin V-twins, this kit ensures reliable sealing across all engine temperatures.
Why riders pick this
- All gaskets, seals, washers, and O-rings included
- MLS head gaskets for improved sealing
- Steel Viton-coated base gaskets
- Blue Viton valve stem seals
- AFM material for reliable sealing
When you're tearing down your Evo Big Twin for a rebuild, the last thing you want is to hunt for individual gaskets and seals. This comprehensive Cometic EST kit bundles everything required for a full engine overhaul, from top to bottom. It's designed to deliver a complete and reliable seal, crucial for maintaining performance on your Harley Touring, Softail, or Dyna.
Robust Sealing for Your Rebuild
- Multi-Layer Steel (MLS) head gaskets for enhanced durability
- Steel Viton-coated base gaskets resist heat and wear
- Blue Viton valve stem seals ensure proper valve sealing
- AFM material components provide consistent sealing under varied conditions
- Complete kit means all gaskets and seals are included
Confidence in Your Engine Work
Using a high-quality gasket kit like this Cometic EST set is fundamental for a successful engine rebuild. The advanced materials and comprehensive nature of the kit mean you can button up your Evo Big Twin with confidence, knowing every sealing surface is addressed with components built to last.
Specifications
- Brand: Cometic
- Manufacturer Part #: C9886
- Weight: 1.15 lbs
Common questions
What's included in this kit?
All gaskets, seals, washers, and O-rings needed for a complete engine overhaul on Evo Big Twin motors.
Will this fit my Twin Cam or Milwaukee-Eight engine?
No, this kit is specific to Evo Big Twin engines. Twin Cam and Milwaukee-Eight require different gasket kits. Please verify your engine type with our Shop by Bike tool.
Are the head gaskets MLS or conventional?
This kit includes MLS (multi-layer steel) head gaskets for improved sealing and durability.
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 | 68-9886 |
| WEIGHT | 1.15 lb |
Please contact us to confirm fitment for your specific motorcycle, or check the product title for compatibility notes.
CUSTOMER REVIEWS
4.36
14 RATINGS
5★
11
4★
0
3★
1
2★
1
1★
1
✓ VERIFIED
Mar 8, 2026
Gasket
Working fine was for my brother's bike
✓ VERIFIED
Oct 25, 2024
Works Fine at a lower cost
I usually have an OEM from Harley Davidson, I have used this twice on my 04 Electraglide, no leaks or issues. At a much lower price.
✓ VERIFIED
Jun 8, 2024
A mediocre gasket
I didn’t use this gasket after removing the derby and seeing the Harley gasket that I removed. No comparison in quality. I ended up going to the local dealer and bought an O.E. gasket.
✓ VERIFIED
Jun 6, 2023
A good buy
The gasket fit nicely and no leaks so far . The fitment was spot on .
✓ VERIFIED
May 4, 2023
There is nothing on them indicating they are actually Cometic gaskets. Are they Substitutes?
