Athena Factory Cylinder Kit

Athena Factory Cylinder Kit
Athena Factory Cylinder Kit

$595.99 - $681.99
14% Off - Save up to $114.00

Description See Also: 3 Reviews 15 Questions Fitment
Item #ATH0008

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3 Reviews
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All Reviews
Boomer Verified Purchaser
Arlington, WA, USA
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
Very complete kit

With v force reeds this thing runs super clean and crisp. Good power.

Miket1211
Winter Garden, FL
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 4/5 Style 5/5
Good Buy

My stock cylinder was trashed. Picked up the Athena kit and after the simple install there was noticeable performance gains.

YZFrider360
Mill Creek WV
Durability 5/5 Ease of Installation 4/5 Performance 5/5 Power 4/5 Style 5/5
Top End Kit

Bought this kit for my YZ125 that I had blown up. It was super easy to install and got me back into the season without missing a race and the bike seemed to have a little more power also.

15 Questions
Answered:   13
Not Yet:   2
Bobby
Location: Chattanooga, TN, USA
Q: I just want to make sure that the kit comes with power valves, cylinder, head, gaskets, and ect please reply with detailed list for i will be purchas?
1 month 16 days ago
I want to purchase this kit. But need full description on everything it includes
Ausquatch
Location: Setauket
Q: Exhuast fitment?
1 month 17 days ago
With the Athena head on my 1997 Yz 125, my 2 stroke pipe does not seem to fit the exhaust port at all, as it protrudes from the cylinder instead of mounting the header in the recessed port on the stock cylinder head. Do i have the wrong exhaust as all stock exhaust should fit?
Randy
Location: Va
Q: Athena factory cylinder kit?
Over 5 months ago
Spark plug keeps coming out of the copper head. Never had this issue with the OEM head. What is causing this problem?
MotoSportExpert
Expert MotoSport Staff
Over 5 months ago
A: I would add a small amount of tread lock.
Carter242
Location: St Anne, IL, USA
Q: What jetting would you recommend on a 2003 kawasaki kx 125 that has v force 3 reeds?
Over 5 months ago
MotoSportExpert
MotoSport Staff Expert
Over 5 months ago
A: There is not a specific setting I could give you for jetting your bike. It would really depend on your location (altitude/temperature) and how your bike is running with the current jetting. Jetting can be very tricky, there isn't one setting that will work everywhere with every bike. I would recommend taking your bike to a local motorcycle dealership’s service department to have your bike properly jetted.
Nick
Q: Bore?
Over 9 months ago
Is this the stock bore for my 2001 yz 125? It says that it is a 54 mm or a or a 54.4 mm how do I know which one I'm getting?
MotoSportExpert
MotoSport Staff Expert
Over 9 months ago
A: The Athena Factory Cylinder Kit for your 2001 Yamaha YZ125 would have a cylinder bore of 54 mm and a 54.4 mm STROKE which adds power without changing the displacement. Bore is the diameter of the cylinder, stroke is the distance the piston travels.
Feel free to give us a call at 888-676-8853 and we would be happy to help you out with your order.
Staneart
Location: Springdale
Q: Does this kit come with the needle bearings for a 03 yz125?
Over 9 months ago
Does this kit come with the needle bearings for a 03 yz125
Boomer
Over 9 months ago Location: Arlington, WA, USA
A: No
Waylon
Location: Omaha, NE, USA
Q: Does this kit require any kind of break in once installed?
1 year 2 months ago
MotoSportExpert
Expert MotoSport Staff
1 year 2 months ago
A: Standard break in procedure would be recommended. Refer to your owners/service manual.
Waylon
Location: Omaha, NE, USA
Q: Will putting in the high compression part in the head cause any problems if i still run 91 Octane gasoline?
1 year 2 months ago
MotoSportExpert
MotoSport Staff Expert
1 year 2 months ago
A: Race gas or a mix of race gas would be recommended for optimum performance.
bwelch33
Location: Halstead p.a.
Q: I'm looking for just the cyclinder jug I have the rest is this possible or do I have to buy the whole kit?
1 year 8 months ago
MotoSportExpert
Expert MotoSport Staff
1 year 6 months ago
A: If it 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 / ATV: 1-888-676-8853
jake
Location: st.catharines
Q: Does it comes with everything pictured. i have a 1999 yz125?
1 year 10 months ago
will it come with everything pictured? cylinder, cylinder head, all gaskets, power valves, and cylinder head bolts? and will it fit my yz125 1999 5ET1-020 model#
MotoSportExpert
Top 1 Contributor
1 year 10 months ago
A: You can review the installation instructions here:

http://www.athenaparts.com/files/pdfs/P400485100003-P400485100008.pdf
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