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Cylinder Works Top End Kit With Cylinder - 4-Stroke
Cylinder Works Top End Kit With Cylinder - 4-Stroke

$342.93 - $670.38
15% Off - Save up to $58.96

Select your bike to see if this cylinder kit fits
Item #CYW0008

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3 Reviews
4.7 out of 5 stars
5 Star   2 4 Star   1 3 Star   0 2 Star   0 1 Star   0
All Reviews
Taicho Verified Purchaser
2 months 6 days ago San Jose, CA
Durability5/5Ease of Installation3/5Performance5/5Power5/5Style5/5
Works good

It works good and engine starts without any problems. One thing, one bolt hole of the cam chain tentioner was too shallow compare to the other. I could not install the bolt which was used with the stock cylinder and replaced with shorter one. Other than that, everything smooth and functions good.

James Humble
Over 7 months ago Maple valley wa
Durability5/5Ease of Installation5/5Performance5/5Power5/5Style5/5
Auxiliary gas tank

I bought a acerbis auxiliary gas tank for the desert 100, it helped me get through the desert. Thank you for selling such a good product!

CamK
Over 7 months ago Pittsburgh pa
Durability5/5Ease of Installation2/5Performance5/5Power5/5Style3/5
Way more power

So I just bought a new bike and I hated the power on it so I bought this and I loved it way more snappy it’s faster and overall a great purchase 5 stars no doubt

9 Questions
Answered:   8
Not Yet:   1
Ray72
Q: I'm looking at the top end kit for a 2004 KX250F. What is the selection for bore size a/b? Wouldn't the piston come matched to the cylinder that's in the kit?
4 months 25 days ago
Michael
Top 10
4 months 25 days ago
A: Yes you are correct, they are all stock bore, however your choices are high compression piston, or a B piston which is also an even higher compression kit, and lastly A, which is a replica, or duplicate kit if you are looking to go with the same compression and build as an OEM kit as identical from the factory as possible.
bill
Q: I have a 2007 Suzuki king quad LTA450XK7. Does this top end fit this machine
Over 5 months ago
DaveGearhead
Top 1
Over 5 months ago
A: No. This kit will not work on your ATV.
Blazinangels
Q: Will this kit fit my 2014 honda rincon 680 4x4 and if not what kit will
Over 6 months ago
Chowe
Top 25
Over 6 months ago
A: Unfortunately this kit will not work on your vehicle you would need to purchase everything individually from the OEM section of our website. If you have any questions give us a call at 1-888-676-8853.
m3rk
Q: If i choose the higher compression piston do i need to change fuel or anything?
1 year 7 months ago
DaveGearhead
Top 1
1 year 7 months ago
A: Typically speaking, if you run any compression higher that 12:5:1 then you need to start thinking about running a higher octane fuel.
alfredo
Q: Does this fit my 2004 yz250f
2 years 10 months ago
Kevin
Q: So i checked and this kit exactly fits my bike which is a 2008 CRF250R but the kit is for a compression of 13.5-1 and my bike is 13.1-1?
Over 3 years ago
MotoSportExpert
Expert MotoSport Staff
Over 3 years ago
A: Slightly higher compression.. Feel free to give us a call at 888-676-8853 and we would be happy to help you out with your order.
CRF250R31PRO
Q: Will this kit fit my bike with a compression ratio of 13:1-1?
Over 3 years ago
MotoSportExpert
MotoSport Staff Expert
Over 3 years ago
A: Yes this kit fits your 2008 Honda CRF250R. Compression would be 13.5:1. 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.
Shawn
Q: Could I get a bigger cylinder? I race and need more power
Over 3 years ago
MotoSportExpert
MotoSport Staff Expert
Over 3 years ago
A: Yes you can find the Athena big bore 280 kit for your 2012 Honda CRF250R here:
http://www.motosport.com/athena-big-bore-kit
Mxracer243
Q: Is this a big bore kit or a regular cylinder head
Over 3 years ago
MotoSportExpert
MotoSport Staff Expert
Over 3 years ago
A: This would be a Standard bore kit.
Fitment

See all bikes that this part fits...

See Fitments
# Part Numbers
Cylinder
Product Variant Manufacturer Part #
Stock Bore 30006
Stock Bore 30004
Stock Bore 40001
Stock Bore 30001
Stock Bore 10008
Stock Bore 50004
Stock Bore 10006
Rear Cylinder/Stock Bore 30008
Stock Bore 60003
Stock Bore 60002
Stock Bore 40002
Stock Bore 10009
Front Cylinder/Stock Bore 30007
Stock Bore 20104
Stock Bore 20004
Stock Bore 20003
Stock Bore 10005
Stock Bore 10003
Stock Bore 20005
Stock Bore 40004
Stock Bore 20001
Stock Bore 20010
Stock Bore 20002
Stock Bore 50002
Stock Bore 40003
Stock Bore 50003
Stock Bore 30011
Stock Bore 50001
Stock Bore 30005
Stock Bore 10002
Stock Bore 10007
Stock Bore 10001
Stock Bore 10004
Gasket
Product Variant Manufacturer Part #
Cylinder Works Top End Kit With Cylinder - 4-Stroke C3511-EST
Cylinder Works Top End Kit With Cylinder - 4-Stroke C7978-EST
Cylinder Works Top End Kit With Cylinder - 4-Stroke 10009-G01
Cylinder Works Top End Kit With Cylinder - 4-Stroke C3054-EST
Cylinder Works Top End Kit With Cylinder - 4-Stroke 860VG810328
Cylinder Works Top End Kit With Cylinder - 4-Stroke C3519-EST
Cylinder Works Top End Kit With Cylinder - 4-Stroke C3549-EST
Cylinder Works Top End Kit With Cylinder - 4-Stroke C3540-EST
Cylinder Works Top End Kit With Cylinder - 4-Stroke C3270-EST
Cylinder Works Top End Kit With Cylinder - 4-Stroke C3288-EST
Cylinder Works Top End Kit With Cylinder - 4-Stroke C3047-EST
Cylinder Works Top End Kit With Cylinder - 4-Stroke C7688
Cylinder Works Top End Kit With Cylinder - 4-Stroke C3187
Cylinder Works Top End Kit With Cylinder - 4-Stroke C3164-EST
Cylinder Works Top End Kit With Cylinder - 4-Stroke C3428-EST
Cylinder Works Top End Kit With Cylinder - 4-Stroke C7185
Cylinder Works Top End Kit With Cylinder - 4-Stroke C7908-EST
Cylinder Works Top End Kit With Cylinder - 4-Stroke C3057
Cylinder Works Top End Kit With Cylinder - 4-Stroke C7947
Cylinder Works Top End Kit With Cylinder - 4-Stroke C3395-EST
Cylinder Works Top End Kit With Cylinder - 4-Stroke C3139-EST
Cylinder Works Top End Kit With Cylinder - 4-Stroke C3406-EST
Cylinder Works Top End Kit With Cylinder - 4-Stroke C3051-EST
Cylinder Works Top End Kit With Cylinder - 4-Stroke C3066-EST
Cylinder Works Top End Kit With Cylinder - 4-Stroke 10001-G01
Cylinder Works Top End Kit With Cylinder - 4-Stroke 50004-G01
Cylinder Works Top End Kit With Cylinder - 4-Stroke 10004-G01
Cylinder Works Top End Kit With Cylinder - 4-Stroke C3175-EST
Cylinder Works Top End Kit With Cylinder - 4-Stroke 860VG810276
Cylinder Works Top End Kit With Cylinder - 4-Stroke 40003-G01
Cylinder Works Top End Kit With Cylinder - 4-Stroke 40001-G01
Cylinder Works Top End Kit With Cylinder - 4-Stroke 10003-G01
Cylinder Works Top End Kit With Cylinder - 4-Stroke 50001-G01
Cylinder Works Top End Kit With Cylinder - 4-Stroke C3142-EST
Cylinder Works Top End Kit With Cylinder - 4-Stroke 20005-G02
Cylinder Works Top End Kit With Cylinder - 4-Stroke 30007-G01
Cylinder Works Top End Kit With Cylinder - 4-Stroke 10005-G01
Cylinder Works Top End Kit With Cylinder - 4-Stroke 60002-G02
Cylinder Works Top End Kit With Cylinder - 4-Stroke 20004-G01
Cylinder Works Top End Kit With Cylinder - 4-Stroke C3150-EST
Cylinder Works Top End Kit With Cylinder - 4-Stroke 60002-G01
Cylinder Works Top End Kit With Cylinder - 4-Stroke 60003-G01
Cylinder Works Top End Kit With Cylinder - 4-Stroke C3267-EST
Cylinder Works Top End Kit With Cylinder - 4-Stroke C3268-EST
Piston
Product Variant Manufacturer Part #
Stock Bore 10.5:1 Compression 24027B
Stock Bore 13.5:1 Compression 23941B
B Piston 23855B
Stock Bore 13.2:1 Compression 23646B
Stock Bore 12.6:1 Compression 23647B
Stock Bore 13.9:1 Compression 23458B
Stock Bore 13.0:1 Compression 23551B
B Piston 23869B
Stock Bore 13.6:1 Compression 23858B
Stock Bore 14.1:1 Compression 23848B
Stock Bore 13.6:1 Compression 23739B
Stock Bore 14.0:1 Compression 23736B
Stock Bore 13.8:1 Compression 23733B
B Piston 23731B
Stock Bore, B Piston 23235B
Stock Bore, B Piston 13.2:1 Compression 23446B
Stock Bore 14.0:1 Compression 23872B
Stock Bore 12.0:1 Compression 23644B
Stock Bore 11.5:1 Compression 23909B
Stock Bore 13.9:1 Compression 23515B
Stock Bore 14.4:1 Compression 23954B
Stock Bore 14:1 Compression 23642A
Stock Bore 13.7:1 Compression 23960B
B Piston 23759B
B Piston 23963B
Stock Bore 13.5:1 Compression 23861B
Stock Bore 24018B
B Piston 23961B
Stock Bore 12.1:1 Compression 24025B
B Piston 22900B
B Piston 24080B
B Piston 23304B
Stock Bore 23311B
Stock Bore 11.5:1 Compression 23545B
Stock Bore 23564B
Stock Bore, B Piston 23623B
Stock Bore 23532B
Stock Bore 13.8:1 Compression 23565B
Stock Bore 22805B
Stock Bore 13.9:1 Compression 23567B
Stock Bore 23127B
Stock Bore 13.9:1 Compression 23394B
Stock Bore 23391B
Stock Bore 13:1 Compression 23553B
Stock Bore 22915B
Stock Bore 10.2:1 Compression 23643B
Stock Bore 23562B
B Piston 23757B
Stock Bore 22984B
Stock Bore 13.6:1 Compression 23831B
Stock Bore, A Piston 23623A
Stock Bore 12.5:1 Compression 23857B
Stock Bore 13.3:1 Compression 23114B
Stock Bore 8.8:1 Compression 23908B
B Piston 23113B
Stock Bore 12.5:1 Compression 23958B
Stock Bore 13.5:1 Compression 23444B
Stock Bore 10.1:1 Compression 23965B
Stock Bore 13.5:1 Compression 23549B
Stock Bore 13.5:1 Compression 22889B
B Piston 23550B
Stock Bore, B Piston 22982B
Stock Bore Single Ring 13.5:1 Compression 22812B
Stock Bore 13.3:1 Compression 23236B
Stock Bore 13.5:1 Compression 22896B
Stock Bore, B Piston/ Fitment 126 23445B
B Piston 23561B
B Piston 23529B
B Piston 23456B
Stock Bore 11.0:1 Compression 23548B
Stock Bore 13.1:1 Compression 23546B
Stock Bore 13.5:1 Compression 23563B
Stock Bore, A Piston 13.2:1 Compression 23446A
B Piston 23639B
Stock Bore, B Piston 23641B
Stock Bore 14.0:1 Compression 23642B
11.7:1 Compression 23302B
B Piston 23730B
12.9:1 Compression 22983B
Stock Bore 14.5:1 Compression 23732B
B Piston 13.0:2 Compression 23443B
Stock Bore 14.5:1 Compression 23734B
B Piston 13.2:1 Compression 23510B
Stock Bore 14.2:1 Compression 23738B
B Piston 22814B
B Piston 23847B
B Piston 23003B
B Piston 23856B
B Piston 12.0:1 Compression 23455B
Stock Bore 13.9:1 Compression 23862B
B Piston 10.5:1 Compression 23163B
B Piston 23870B
B Piston 12.0:1 Compression 23522B
Stock Bore 13.8:1 Compression 23874B
B Piston 10.5:1 Compression 23638B
Stock Bore 14.2:1 Compression 23942B
Stock Bore, A Piston 22982A
Stock Bore 13.5:1 Compression 23959B
Stock Bore 23259B
B Piston 23962B
Stock Bore 23566B
Stock Bore 11.1:1 Compression 23966B
B Piston 11.3:1 Compression 22951B
Stock Bore 24024B
Stock Bore A Piston 23445A
Stock Bore 11.5:1 Compression 24028B
Stock Bore, A Piston 23235A
Stock Bore Pro 13.8:1 Compression 24092B
Stock Bore, A Piston 23641A
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.