✓ 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: 68-9888
Cometic Evo Big Twin EST Gasket Kit - Harley Touring
$128.31
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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.
This Cometic Evo Big Twin EST gasket kit contains every gasket, seal, washer, and O-ring needed for a complete engine overhaul on Harley-Davidson V-Twin motorcycles. It's a comprehensive solution for your Evo Big Twin rebuild.
Why riders pick this
- Every gasket, seal, and O-ring for overhaul
- MLS head gaskets for strong sealing
- Steel Viton-coated base gaskets
- Blue Viton valve stem seals
- AFM material for reliable performance
When you're planning a full refresh for your Evo Big Twin, having a complete and reliable gasket set is non-negotiable. This Cometic EST kit provides all the necessary components, from head gaskets to valve stem seals, ensuring a leak-free and durable build. It's designed to meet the demands of performance V-twin applications.
Superior Sealing for Your Evo Engine
- Multi-Layer Steel (MLS) head gaskets offer robust sealing
- Steel Viton-coated base gaskets resist high temperatures and pressure
- Blue Viton valve stem seals ensure consistent valve sealing
- AFM material components provide a reliable seal across surfaces
- Complete overhaul kit means every gasket and seal is included
Confidence in Every Seal
Rebuilding an engine is a significant undertaking, and the quality of your gaskets directly impacts the longevity and performance of your motor. This Cometic Evo Big Twin EST gasket kit gives you the confidence that every sealing surface is addressed with high-quality, purpose-built components, helping your Harley Touring model run strong for years to come.
Specifications
- Brand: Cometic
- Manufacturer Part #: C9888
- UPC: 191070017910
- Length: 22.83 in
- Width: 13.14 in
- Height: 1.81 in
- Weight: 0.05 lbs
Common questions
What's included in this gasket kit?
Every gasket, seal, washer, and O-ring needed for a complete engine overhaul — head gaskets, base gaskets, valve stem seals, and additional components.
Will this fit my Harley-Davidson?
This kit is designed for Evo Big Twin EST engines. Please verify your engine type matches with our Shop by Bike tool before ordering.
What materials are used in these gaskets?
This kit features MLS head gaskets, steel Viton-coated base gaskets, and blue Viton valve stem seals for durability and high-performance sealing.
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 | 68-9888 |
| WEIGHT | 0.05 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?
