✓ VERIFIED
Apr 17, 2025
Gasket quality
Great gasket kit over delivered in the quality of the gasket set great job
COMETIC
SKU: 68-9759
Cometic EST Gasket Kit 17032-86a - Harley Evolution Sportster 883
$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.
When it's time for a top-end refresh or a complete engine overhaul on your Evo Sportster, a high-quality gasket kit is essential for reliable performance. This Cometic EST Gasket Kit provides all the necessary components to reseal your V-twin engine with confidence. Engineered for superior sealing, it ensures your rebuild holds up to demanding conditions.
Why riders pick this
- Complete engine or top-end gasket set for Evo Sportster 883
- Features MLS head gaskets for robust sealing
- Viton-coated base gaskets and valve stem seals
- Includes every gasket, seal, washer, and o-ring needed
- Extreme Sealing Technology for high-performance applications
This Cometic Evo Sportster EST Gasket Kit is designed for a comprehensive top-end or full engine overhaul, ensuring every critical seal is replaced with high-quality components. It includes everything from Multi-Layer Steel (MLS) head gaskets to valve stem seals, providing a complete solution for your V-twin. The Extreme Sealing Technology (EST) employed by Cometic is engineered to deliver a consistent, leak-free seal across thermal cycles and high-performance applications, crucial for maintaining engine integrity and output.
Advanced Sealing Technology for Your V-Twin
- Multi-Layer Steel (MLS) head gaskets for robust, long-lasting sealing
- Steel base gaskets with Viton coating resist heat and chemicals
- Blue Viton valve stem seals ensure optimal oil control
- Constructed from advanced AFM materials for enhanced durability
- Complete kit for a motor or top-end overhaul, including all necessary seals
Rebuilding with Confidence
Choosing the right gasket kit is paramount for any engine rebuild, especially on a performance-oriented Harley-Davidson. This Cometic EST kit provides the peace of mind that comes with using components specifically designed for the Evolution Sportster platform. Pair this kit with a professional rebuild to ensure your 883 is ready for many more miles of hard riding, maintaining peak performance with reliable sealing.
Specifications
- Brand: Cometic
- Manufacturer Part #: C9759
- Weight: 0.83 lbs
Common questions
What engine models does this Cometic EST gasket kit fit?
This kit is specifically designed for Harley-Davidson Evolution Sportster 883 models from 1986-1990. Please confirm your motorcycle's year and model using our Shop by Bike tool before ordering.
What does EST (Extreme Sealing Technology) mean?
EST is Cometic's advanced gasket technology featuring Multi-Layer Steel (MLS) head gaskets, Viton-coated steel base gaskets, and high-quality AFM materials. This combination provides superior sealing and durability under demanding V-twin engine conditions.
Is this a complete kit for a full engine overhaul or just the top-end?
This Cometic EST Gasket Kit is a complete kit that includes every gasket, seal, washer, and o-ring needed for either a full motor overhaul or a top-end refresh.
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 | 68-9759 |
| WEIGHT | 0.83 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
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✓ 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
