Cometic Top End Gasket Kit

$17.99 - $89.99
$17.99 - $82.99
4.10 out of 5 stars
Fitment Expert:
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Cometic Top End Gasket Kit
Cometic Top End Gasket Kit
  • Description
  • Reviews (131)
  • Q&A (36)
  • Fitment

State-of-the-art gaskets is what Cometic has been doing since its inception in 1989. This comes from their dedication to constructing gaskets for the most demanding race circuits like AMA and NASCAR. Today's lightweight engines are producing more horsepower, higher cylinder pressure, clamp load and extreme temperatures. Cometic's commitment is to provide innovative, quality gaskets while maximizing your engine's power and performance.

Cometic meets the needs of each specific gasket by using materials to match. Even the basic top end gasket kit features different materials for each gasket. The head gasket is constructed from non-asbestos, flexible graphite that is laminated to a stainless steel core. The manifold and base gaskets are constructed from non-asbestos nitride rubber-bound fiber. Cometic also includes copper gaskets where needed.

Cometic designs and builds their gaskets in the U.S.A.

Note: Images are for reference only, actual item may vary based on contents and fitment.

4.1 out of 5 stars (131)
4.1 out of 5 stars
5 star   86
4 star   16
3 star   8
2 star   4
1 star   17
See Terms and Conditions
1-10 of 131
Overall 2 out of 5 stars
ski778
Bad

I bought this for my 07 yz 450f and the rivets in the head gasket didn't line up hitting the head caused it to leak everywhere. Going with stock

Overall 3 out of 5 stars
Durability
Ease of Installation
Performance
Power
Style
Verified Purchaser
Location: San Antonio, TX 78258, USA
Nate
Ehh

gasket didn't line up. on the head gasket where the coolant hole should be, there is just an "up" indicator that blocks the whole entire port. and also not sure if this is the case with all coolants, but don't use bell ray moot-chill coolant with theses gaskets, it breaks down the black paint/coating and it gets all in your calling system.

Overall 5 out of 5 stars
Durability
Ease of Installation
Performance
Power
Location: Tennille, GA, USA
klewis13
Great product

Good gaskets just need more info on whats in the pack might wanna buy xtra o rings the ktm kit didnt come with everything

Overall 5 out of 5 stars
Durability
Ease of Installation
Performance
Power
Style
Verified Purchaser
Location: Parker, AZ, USA
motoracer529
Great service

the only place I get all my parts

Overall 5 out of 5 stars
Durability
Ease of Installation
Performance
Power
Style
Verified Purchaser
crf487
Have used these for years

Religiously use Cometic for top end, and OEM for lower gaskets, period. Has never failed and you stick with what works.

Overall 5 out of 5 stars
Durability
Ease of Installation
Performance
Style
Verified Purchaser
Location: Wichita Falls Texas
fxlukefx
Fit Perfect

Product worked great and was as good as OEM.

Overall 5 out of 5 stars
Durability
Ease of Installation
Performance
Power
Style
Verified Purchaser
Location: Austin, TX
race271
Exactly What I Needed

During my rebuild I noticed my gaskets were completely toasted. Fortunately I had the foresight to grab these Cometic replacements. Not much to say except that they fit perfect, and included absolutely everything I needed to get everything freshened up.

Overall 5 out of 5 stars
Durability
Ease of Installation
Performance
Power
Style
Verified Purchaser
Location: Georgia, USA
Robert
Head Gasket

The only problem I saw was the head gasket is not marked with UP. This is why I gave Ease of Installation only 1 star.

Overall 4 out of 5 stars
Durability
Ease of Installation
Performance
Power
Style
Verified Purchaser
Location: Rome, PA, USA
2stroker
Quick shipping

I will definitely order parts from motosport again, only problem I have is finding certain parts.

Overall 4 out of 5 stars
Durability
Ease of Installation
Performance
Power
Style
Location: Western PA
DirtWarrior
Glad I bought it.

There isn't really much to say about a gasket kit other than answering the ever important question: "Does it fit?" Well, yes it fit my 2002 YZ125, but it seemed like it wasn't cut out all the way. Just trimmed it a little and it didn't affect anything so I give it 4 out of 5 stars. I also wish Cometic would label each O-ring and gasket to make reassembly a little easier the first time you do it.

1-10 of 131
Total Questions (36)
Questions with answers:
  36
Questions without answers:
0
1-10 of 36
steve 8 days 14 hours ago
Does this kit fit an xr50 with an 88cc big bore kit?
Expert MotoSport Staff
8 days 14 hours ago
MotoSportExpert
This would be for the stock bore cylinder, you would want to get one for the big bore. If its available through one of our suppliers, we would be happy to order it for you. Please contact one of our sales professionals to inquire about special orders and availability. Dirt Bike / ATV: 1-888-676-8853
Rittiz 2 months 18 days ago Location: South Africa
Just double checking, will this gasket set fit my 1994 Suzuki DR350 S have got some major oil leaks through cylinder head cover,?
As well as valve inspections cap O-Rings for the dr350 s
MotoSport Staff Expert
2 months 18 days ago
MotoSportExpert
Just be sure to correctly select the Year/Make/Model of your bike before ordering so we can be sure to send you the correct kit for your bike. Also, feel free to give us a call at 888-676-8853 and we would be happy to help you out with your order. Note: All products sold on Motosport.com are for US models only. We unfortunately do not have product fitment for non-us models.
Johnathan 2 months 19 days ago Location: Oklahoma
Will this fit a 2003 honda xr 50?
My son knocked a whole in the crankcase while jumping the dirt bike and ran it out of oil the what parts do you suggest I buy to fix it? Th
Expert MotoSport Staff
2 months 18 days ago
MotoSportExpert
Yes. Just be sure to correctly select the Year/Make/Model of your bike before ordering so we can be sure to send you the correct kit for your bike. As far as what will need to be replaced It depends on how long it ran without oil and how much damage was done. You wont be able to tell till you get it pulled apart and inspect it. Also, feel free to give us a call at 888-676-8853 and we would be happy to help you out with your order.
Chrisv 2 months 19 days ago Location: Florence, KY, USA
Curious as to exact items included for 2004 Suzuki LT Z400, application?
MotoSport Staff Expert
2 months 19 days ago
MotoSportExpert
The Cometic Top End Kit for your 2004 Suzuki LTZ400 includes: 1 - Head Gasket 1 - Base Gasket 1 - Cam Chain Tensioner Gasket 1 - Exhaust Gasket 1 - Oil Drain Bolt Gasket 4 - Valve Stem Seals Applications: Suzuki LT-Z400 03-13 Kawasaki KFX400 03-06 Arctic Cat DVX400 03-08 Stock Code: C7978-EST Bore Size: 92mm
BeginningRider 3 months 26 days ago Location: Grandville, MI, USA
Will this replace a bad "compression seal"?
My brother rode my bike with out my knowing and the compression completely disappeared when i went to ride it the next day. A friend said he probably revved it really and melted an o-ring. I am more of a car guy and i don't know much about bikes. will this fix my problem, if not what sounds wrong with it and what should i do ps -does not run -clutch no longer works, when in gear and clutch pulled the wheel doesn't move
Expert MotoSport Staff
3 months 26 days ago
MotoSportExpert
There could be multiple things that went bad. Was the gas properly mixed? You will need to pull the cylinder and head off to get a look at the piston and rings and a better idea of what is going on inside your motor.
zhill29 Over 5 months ago
Will this include the o-rings for the exhaust pipe?
MotoSport Staff Expert
Over 5 months ago
MotoSportExpert
No. The Cometic kit for your 2001 Suzuki RM125 would include the following: 1 - Inner Head O-Ring 1 - Outer Head O-Ring 1 - Base Gasket 1 - Front Power Valve Gasket 1 - Right Power Valve Gasket
etho42 Over 6 months ago
Does this gasket set come with valve stem seals?
MotoSport Staff Expert
Over 6 months ago
MotoSportExpert
The Cometic Top End Gasket Kit (C3066) for your 2006 Yamaha YFZ450 would include the following: 1 - Head Gasket 1 - Base Gasket 1 - Exhaust Gasket 1 - Cam Chain Tensioner Gasket 2 - Exhaust Valve Stem Seals 3 - Intake Valve Stem Seals 6 - Oil Line Washers 1 - Base Dowel O-Ring
Harpkid34 Over 7 months ago
How thick is this gasket?
Expert MotoSport Staff
Over 7 months ago
MotoSportExpert
Cometic does not list the thickness of the head gasket for your 2005 Honda CR85. It would be the same as stock. You can contact Cometic at 1-800-752-9850.
CC72 Over 7 months ago
1990 AND 1992 CR250R HAVE THE SAME TOP END GASKET?
MotoSport Staff Expert
Over 7 months ago
MotoSportExpert
No, the 1990-91 CR250 uses a different gasket kit (C7016) than the 1992-01 CR250 (C7116). In 1992 Honda switched cylinders moving the power valves from the top of the cylinder to the right side of the cylinder.
Will Over 11 months ago Location: Maui, Hawaii, USA
This comes with everything I need for top end ?
Seals exhaust
Top 500 Contributor Top 1000 Contributor
Over 11 months ago Location: Portland, OR, USA
alexi57
I installed this gasket kit when rebuilding the top end of my 2008 Honda CRF 450X. The kit was complete and replaced every required gasket in the top end.
Over 11 months ago Location: Wolcottville, IN, USA
rainbowroostbruce
No. You will still to order the head crush washers. (YZ)
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