✓ VERIFIED
Apr 17, 2025
Gasket quality
Great gasket kit over delivered in the quality of the gasket set great job
COMETIC
SKU: 68-9854F
Cometic Evo Sportster EST Gasket Kit - Harley Evolution Sportster
$140.45
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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.
Prepare your Evolution Sportster for a complete engine overhaul with the Cometic EST Gasket Kit. This comprehensive kit provides all the necessary sealing components, ensuring a reliable and leak-free rebuild for your V-twin motor.
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 tearing down your Evolution Sportster engine for a rebuild or performance upgrade, a high-quality gasket kit is non-negotiable. The Cometic Evo Sportster EST Gasket Kit is engineered to provide superior sealing, featuring advanced materials designed to withstand the rigors of a performance V-twin. Every gasket, seal, and O-ring needed for a full motor refresh is included, so you can tackle your project with confidence.
Extreme Sealing for Your Sportster
- Includes MLS (Multi-Layer Steel) head gaskets for robust sealing
- Features steel Viton-coated base gaskets for durability
- Equipped with blue Viton valve stem seals for reliable performance
- AFM material components included for comprehensive sealing
- Complete kit for a full motor overhaul
Rebuild Your Evo Sportster Right
This Cometic gasket kit is more than just a collection of seals; it's an investment in the longevity and performance of your Evolution Sportster. The Extreme Sealing Technology ensures that your engine maintains optimal compression and prevents oil leaks, even under demanding riding conditions. Whether you're a seasoned builder or tackling your first engine project, this kit provides the peace of mind that comes from using top-tier components.
Specifications
- Brand: Cometic
- Manufacturer Part #: C9854F
- OE Part #: 17032-86B
- Length: 8.97 in
- Width: 7.4 in
- Height: 2.04 in
- Weight: 0.05 lbs
Common questions
What does EST mean for these gaskets?
EST stands for Extreme Sealing Technology, Cometic's advanced system using materials like MLS and Viton coatings for enhanced sealing and durability, especially in high-performance applications.
Is this kit suitable for all Evolution Sportster engines?
This kit is designed for Evolution Sportster V-twin engines. We recommend using our Shop by Bike tool to confirm exact fitment for your specific model year and displacement before ordering.
What components are included in this complete motor overhaul kit?
This kit includes MLS head gaskets, steel Viton-coated base gaskets, blue Viton valve stem seals, AFM material, and all other gaskets, seals, washers, and O-rings necessary for a complete Sportster engine rebuild.
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 | 68-9854F |
| WEIGHT | 0.05 lb |
Please contact us to confirm fitment for your specific motorcycle, or check the product title for compatibility notes.
CUSTOMER REVIEWS
4.67
18 RATINGS
5★
16
4★
0
3★
1
2★
0
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
