✓ VERIFIED
Apr 17, 2025
Gasket quality
Great gasket kit over delivered in the quality of the gasket set great job
COMETIC
SKU: 68-9953
Cometic Evo Sportster EST Complete Gasket Kit - Harley Evolution V-Twin
$199.43
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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 Sportster EST gasket kit is a comprehensive solution for any Evolution V-twin engine overhaul, providing every gasket, seal, washer, and O-ring needed. Engineered with Extreme Sealing Technology, it features MLS head gaskets and Viton-coated base gaskets for reliable, high-performance sealing.
Why riders pick this
- Complete overhaul kit for Evo Sportster V-twin
- MLS head gaskets for enhanced sealing
- Viton-coated base gaskets for durability
- Blue Viton valve stem seals for oil control
- All necessary gaskets, seals, and o-rings included
When it's time for a major engine service or a complete rebuild on your Evolution V-twin, a reliable gasket set is non-negotiable. The Cometic Evo Sportster EST gasket kit delivers a full complement of sealing components, ensuring that every critical junction of your engine is properly sealed. This complete kit simplifies the rebuilding process, giving you confidence in the integrity of your build.
Extreme Sealing for Evolution Performance
- Multi-Layer Steel (MLS) head gaskets for robust, long-lasting sealing
- Steel Viton-coated base gaskets offer excellent resistance to heat and chemicals
- Blue Viton valve stem seals provide superior oil control and longevity
- Constructed with advanced AFM material components throughout
- A complete motor overhaul kit, including all gaskets, seals, washers, and O-rings
Build with Confidence
Whether you're restoring a classic Evolution engine or enhancing its performance, the Cometic Evo Sportster EST gasket kit provides the foundation for a leak-free and powerful V-twin. The advanced materials and comprehensive nature of this kit are designed to meet the demands of both stock and modified engines. Always follow your service manual's recommendations for installation and torque specifications to ensure optimal results.
Specifications
- Brand: Cometic
- Manufacturer Part #: C9953
- Kit Type: EST (Extreme Sealing Technology)
- Weight: 2.275 lbs
Common questions
What is included in this Cometic Evo Sportster EST gasket kit?
This kit is a complete motor overhaul set, containing all gaskets, seals, washers, and o-rings needed for a full rebuild, including MLS head gaskets, steel Viton-coated base gaskets, and Viton valve stem seals.
What does EST (Extreme Sealing Technology) mean for these gaskets?
EST denotes the use of advanced materials such as Multi-Layer Steel (MLS) head gaskets and Viton-coated steel base gaskets, engineered for superior performance and reliability in V-twin engines.
Will this kit fit my Harley-Davidson Evolution engine?
This kit is designed for Evo Sportster and compatible V-twin engines. Please verify your specific engine type using our Shop by Bike tool to confirm exact fitment before ordering.
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 | 68-9953 |
| WEIGHT | 2.28 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
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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
