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Cylinder Works Big Bore Gasket Set
Cylinder Works Big Bore Gasket Set

$35.99 - $116.96
10% Off - Save up to $12.99

Select your bike to see if this big bore gaskets fits
Item #CYW0002

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3 Reviews
5 out of 5 stars
5 Star   3 4 Star   0 3 Star   0 2 Star   0 1 Star   0
All Reviews
0311 Top 1000
1 month 6 days ago Pennsylvania
Durability5/5Ease of Installation5/5Performance5/5Power5/5Style5/5

Good price, great product!

LRRS38 Top 250 Verified Purchaser
2 years 8 months ago Littleton, NH 03561, USA
Durability5/5Ease of Installation5/5Performance5/5Power5/5Style5/5
Cylinder Works Big Bore Gaskets

Installed the Big Bore Kit on a 08 CRF450 and use these gaskets when I freshen the top end. Perfect fit and comes will the necessary gaskets to complete the job!

hammerhead Verified Purchaser
Over 6 years ago
Durability5/5Ease of Installation5/5Performance5/5Power5/5Style5/5
Cylinder Works makes some Great Products

Excellent ...

8 Questions
Answered:   7
Not Yet:   1
Q: Will this work with stock cylinder that is bored?
1 year 8 months ago
Q: Cylinder 80mm yz250f 2015
1 year 11 months ago
hello I have a 2015 yz250f with a big bore, the original head gasket is compatible for my cylinder, or should I buy a suitable one for the measurement of 80mm cylinder
Top 25
1 year 11 months ago
A: Yes you would need to purchase either athena, cylinder works, or cometic big bore gasket kits.
Q: Could I order the top end O-ring gaskets for a 2011 yz85 bored to 103.5
Over 3 years ago
MotoSport Staff Expert
Over 3 years ago
A: If available through one of our suppliers, we would be happy to order them for you. Please call one of our sales professionals to inquire about special orders and availability.
Dirt Bike / ATV: 1-888-676-8853
Q: Will this work on a 98mm big bore cylinder works ltr 450
Over 4 years ago
Top 10
Over 4 years ago
A: Yes! The Suzuki LTR450 quad at 98mm makes the engine a 474cc size.
Top 500
Q: Same as origanal pakaged gaskets?
Over 9 years ago
Are these the same gaskets that come with the big bore kit? will they fit with the yfz450 cylender works 480 big bore?
MotoSport Staff Expert
Over 9 years ago
A: These are the replacement gaskets for the Cylinder Works BigBore kits.
Q: Is this gaskets made by cometic
Over 10 years ago
cylinder works big bore gaskets
MotoSport Staff Expert
Over 10 years ago
A: As far as I know these are not made by Cometic.
Q: Does this fit 03 yamaha 290cc big bore kits
Over 10 years ago
MotoSport Staff Expert
Over 10 years ago
A: this gasket kit will only work with the Cylinder works big bore kits. You will need to figure out which kit is installed on the bike and order those replacement gaskets made for that kit.
Q: I need to know what mm the gasket is i need a 100mm head gasket for my big boar from cylinder works
Over 10 years ago
MotoSport Staff
Over 10 years ago
A: If you have a Cylinder Works big bore kit all you need to do is order the corresponding gasket kit for your bike.

See all bikes that this part fits...

See Fitments
# Part Numbers
Product Variant Manufacturer Part #
479cc 11003-G01
487cc 11005-G01
+2mm 11004-G01
269cc 11001-G01
+3.20mm 11007-G01
488cc 11002-G01
478cc 11006-G01
434cc 41001-G01
269cc 31001-G01
269cc 31004-G01
474cc 41002-G01
269cc 21002-G01
478cc 21003-G01
256cc 12001-G01
478cc 11008-G01
270cc 51004-G01
+2mm 31011-G01
276cc 51002-G01
365cc 51001-G01
365cc 51003-G01
269cc 41003-G01
269cc 41004-G01
+3mm 21010-G01
478cc 23001-G01
468cc 21005-G01
+2mm 21005-G02
103.5 21007-G01
727cc 11009-G01
727cc 21004-G01
860cc 31007-G01
975cc 61001-G01
808cc 61002-G01
808cc 61002-G02
1110cc 61003-G01
+3mm 11010-G01
+6.2mm 12007-G01
+2mm 22001-G01
+3mm 31012-G01
+3mm 51006-G01
+2mm 51007-G01
+3mm/ Fitment 43 11010-G02
+3mm/ Fitment 44 CW11011G01
+2mm/ Fitment 45 CW21012G01
+3mm/ Fitment 46 CW21013G01
California Proposition 65

WARNING: This product contains chemicals known to the State of California to cause cancer, and birth defects or other reproductive harm. Wash hands after handling. For more information, go to www.P65Warnings.ca.gov.