Athena 144cc Big Bore Cylinder Top End Piston Kit For Yamaha YZ125 2005-2021 – 58mm, 2-Stroke, Includes Cylinder, Gaskets, Pistons, Rings, Wrist Pins, Made In Italy
About this item
Alright, Yamaha YZ125 riders!
Want to turn your 125 into a 144cc ripper?
This Athena big bore kit is the way to go.
It's a complete top end kit for 2005-2021 YZ125 models.
You get the cylinder barrel, piston, rings, wrist pin, and a full gasket set—everything you need to bump up your displacement and get more grunt out of your 2-stroke.
The kit is 58mm and made by Athena in Italy, known for high-quality performance parts.
It's corrosion-resistant and built to last.
Part number P400485100030 crosses to OE numbers 1C3-11111-11-00, 1C3-11311-21-00, and 1C3-11631-03.
It comes with a 1-year warranty.
Just a heads-up for California folks—Prop 65 warning applies.
If you're looking for more power without sacrificing reliability, this Athena kit is a killer upgrade.
Get ready to rip!
- Free shipping
- Free 30-day returns
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