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2000 Yamaha YZ125

Athena Factory Cylinder Kit

Retail: $795.99
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FITS: 2000 Yamaha YZ125 change
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Athena Factory Cylinder Kit

Product Description

  • Installing the Athena Factory cylinder kit on your bike makes a truly race ready to compete with the best of the best.
  • Athena Factory cylinder kits are made with nickel-carbide coating, and ported to factory “Works” specs for 2-stroke motorcycles.
  • The Athena Factory cylinder kit comes with a removable bronze dome, allowing for higher compression and anti-detonating features to improve the life of your motorcycle's engine.
  • The Factory cylinder from Athena uses specially designed high performance, high anodized power valves.
  • Athena Factory cylinder kit also uses a specially designed high performance Cast-lite, flat top piston, special gaskets and seals which are included with the kit for easy and complete installation.
  • The Athena Factory cylinder kit provides a cylinder bore of 54mm and a 54.4mm stroke which adds power without changing the displacement.
  • Note: the Athena Factory Cylinder kit does not include the upper connecting rod needle bearing.
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Miket1211 Location: Winter Garden, FL
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Ease of Installation
Location: Winter Garden, FL
Good Buy

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

Ease of Installation
Location: Mill Creek WV
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.

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Total Questions (3)
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mcredi Over 5 months ago Location: San Jose
Power valve?
Does the athena factory kit include power valves?
MotoSport Staff
Over 5 months ago
Yes, this kit will include the Valves. If you need to replace the shaft or any of the other parts associated with the power valves you can find them in our O.E.M. section for your 2000 YZ125 here:
Chris 1 year ago
Do the athena factory cylinder kit and athena big bore kit come complete with all gaskets and O rings required for a complete rebuild?
MotoSport Staff
1 year ago Location: Portland, OR, USA
For the 2006 YZ125 it will include all required gaskets and o-rings for the top end. It does not include gaskets and o-rings for the crankcase portion of the motor, only from the base gasket and up.
peter 1 year ago Location: denmark
I thought about to buy the Athena factory cylinder kit but if i buy it does i have to ride with athena cylinder kit piston?
whats is the uppe conecting neddle bearing?
MotoSport Staff
1 year ago Location: Portland, OR, USA
The Athena Factory Cylinder kits do require you to use their piston. If you purchase the cylinder kit, it is complete with cylinder, head, gaskets, wrist pin bearing and piston kit. Keep in mind since there was no model listed, this is not available for every make and model.
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