Cometic Top End Gasket Kit

$16.99 - $81.99
4.20 5 117
4.20 out of 5 stars
Fitment Expert:
 
Cometic Top End Gasket Kit
Cometic Top End Gasket Kit
  • Description
  • Reviews (117)
  • Q&A (40)
  • 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.

4.2 out of 5 stars (117)
4.2 out of 5 stars
5 star   89
4 star   16
3 star   9
2 star   4
1 star   17
See Terms and Conditions
1-10 of 117
Overall 5 out of 5 stars
Durability
Ease of Installation
Performance
Power
Style
Verified Purchaser
Location: Salt Lake City, UT, USA
MissPiggy
Seal it up.

Works very well, maintains your engines crucial seals.

Overall 5 out of 5 stars
Durability
Ease of Installation
Performance
Power
Style
Verified Purchaser
Location: lake charles la.
nilly
Weisco top end kit

bike runs better more power and runs smoother

Overall 3 out of 5 stars
Verified Purchaser
Average

Only came with one base gasket and I ended up needing a thicker one so that was a pain but everything else was OK.

Overall 5 out of 5 stars
Durability
Ease of Installation
Performance
Power
Style
Verified Purchaser
Location: Mohawk, TN 37810, USA
Brian
Easy To Change and Hold Up Well

I have not had a failure due to the gaskets after using them for two seasons. I really like the way the base gasket is so easy to remove when changing top ends. No scraping required........it just comes right off.

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.

1-10 of 117
Total Questions (40)
Questions with answers:
  40
Questions without answers:
0
Tyler Location: Toledo, OH, USA
Johnathan Location: Oklahoma
1-10 of 40
Rubins93 1 month 5 days ago
Hey, I have a honda cr125r bigbore, would it this fit?
Expert MotoSport Staff
1 month 4 days ago
MotoSportExpert
No, this would be for a stock bore. If one is 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: 1-888-676-8853
Tyler 3 months 13 days ago Location: Toledo, OH, USA
What are the exact gaskets included for a 2001 yamaha yz 80?
MotoSport Staff Expert
3 months 11 days ago
MotoSportExpert
The Cometic Top End Gasket Kit for your 2001 Yamaha YZ80 (C7137) would include:
1 - Outer Head O-Ring
1 - Inner Head O-Ring
1 - Base Gasket
1 - Exhaust O-Ring
Tyler 3 months 13 days ago Location: Toledo, OH, USA
I have a 2001 yz 80 regular bore will this kit fit perftect and what all does it come with for my bike?
Expert MotoSport Staff
3 months 11 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.

Top End Kit C7137 includes:

1 - Outer Head O-Ring
1 - Inner Head O-Ring
1 - Base Gasket
1 - Exhaust O-Ring
Berk451 3 months 21 days ago
What all comes with the Cometic top end kit for a 05 kx250f?
MotoSport Staff Expert
3 months 21 days ago
MotoSportExpert
The Cometic Top End Gasket Kit (C3054-EST) for your 2005 Kawasaki KX250F would include the following:
1 - Head Gasket
1 - Base Gasket
1 - Exhaust Gasket
1 - Cam Chain Tensioner O-Ring
4 - Valve Stem Seals
steve Over 5 months ago
Does this kit fit an xr50 with an 88cc big bore kit?
Expert MotoSport Staff
Over 5 months 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 Over 8 months 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
Over 8 months 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 Over 8 months 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
Over 8 months 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 Over 8 months ago Location: Florence, KY, USA
Curious as to exact items included for 2004 Suzuki LT Z400, application?
MotoSport Staff Expert
Over 8 months 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 Over 9 months 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
Over 9 months 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 10 months ago
Will this include the o-rings for the exhaust pipe?
MotoSport Staff Expert
Over 10 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
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