✓ VERIFIED
Apr 17, 2025
Gasket quality
Great gasket kit over delivered in the quality of the gasket set great job
COMETIC
SKU: 68-9855F
Cometic Evo Sportster EST Gasket Kit - Harley Evolution Sportster
$618.000,00
Free shipping on orders $99+ · Best value guarantee
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Free Shipping on orders $99+
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30-Day Returns — see policy
Authorized Dealer — sourced direct
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 Sportster EST Gasket Kit provides a complete overhaul solution for your V-twin engine, ensuring reliable sealing with advanced materials. This kit is essential for any performance build or thorough engine refresh on your Evolution Sportster.
Why riders pick this
- Complete engine overhaul gasket kit
- MLS head gaskets for secure sealing
- Steel Viton-coated base gaskets
- Blue Viton valve stem seals
- AFM material components included
When you're pushing your Evolution Sportster, every component needs to perform, especially the gaskets that seal your engine's vitals. Cometic's Evo Sportster EST Gasket Kit is engineered with Extreme Sealing Technology to meet these demands. This comprehensive kit includes MLS head gaskets, steel Viton-coated base gaskets, and blue Viton valve stem seals, all designed for superior durability and leak prevention. It's everything you need for a complete engine overhaul, ensuring your V-twin performs at its best.
Advanced Sealing for Your Sportster
- Includes MLS (Multi-Layer Steel) head gaskets for robust sealing
- Features steel Viton-coated base gaskets for heat and chemical resistance
- Equipped with blue Viton valve stem seals for enhanced longevity
- AFM material components ensure comprehensive sealing
- Complete motor kit with all necessary gaskets and seals
Build with Confidence
Using the Cometic Evo Sportster EST Gasket Kit means you're installing components designed for performance and reliability. The advanced materials and precision manufacturing help maintain optimal compression and prevent fluid leaks, critical for both stock and modified Evolution Sportster engines. Whether you're doing a routine maintenance job or a full custom build, this kit provides the foundation for a dependable and powerful V-twin.
Specifications
- Brand: Cometic
- Manufacturer Part #: C9855F
- OE Reference #: 17026-91B
- Length: 22.6 in
- Width: 13.3 in
- Height: 1.8 in
- Weight: 1.75 lbs
Common questions
What does EST (Extreme Sealing Technology) offer over standard gaskets?
EST gaskets utilize advanced materials like MLS (Multi-Layer Steel) for head gaskets and Viton-coated steel for base gaskets, providing superior sealing, heat resistance, and durability for high-performance V-twin engines.
Will this gasket kit fit my specific Evo Sportster model?
This kit is designed for Evolution Sportster models. We recommend verifying your specific year and displacement using our Shop by Bike tool to ensure perfect compatibility before ordering.
Does this kit contain all the gaskets needed for a full engine rebuild?
Yes, the Cometic Evo Sportster EST Gasket Kit is a complete motor kit that includes all gaskets, seals, washers, and O-rings required for a full engine overhaul.
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 | 68-9855F |
| WEIGHT | 1.75 lb |
Please contact us to confirm fitment for your specific motorcycle, or check the product title for compatibility notes.
CUSTOMER REVIEWS
4.67
18 RATINGS
5★
16
4★
0
3★
1
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1★
1
✓ VERIFIED
Jun 3, 2023
DONT FOLLOW PRINTED INSTRUCTIONS!
DON’T FOLLOW THE INSTRUCTIONS ON THE BOX!!! It says recommended torque is 42 lb/ft. You know what happened at 32lb/ft? One of bolts broke! And I was lucky there was long enough piece sticking out to remove it without drilling out! Check photos.
✓ VERIFIED
Feb 21, 2022
Fits well!
✓ VERIFIED
Sep 10, 2021
Quality part great service and got it ahead of time great place
✓ VERIFIED
Jun 7, 2021
No leaks!!<br />Ordering was a breeze. Shipping was fast and I live way out in the middle of the Pacific Ocean, Hawaii. Price was much better than competition.
✓ VERIFIED
Nov 1, 2020
Great gaskets. Bike has been running great ever since I installed these last week, about 270 miles on em, no issues
