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2005
Yamaha
YZ125

Athena - P400485100030 - Big Bore Cylinder Kit (144cc), 4.00mm Oversize to 58.00mm, 14:1 Compression

Universal Powersport (23048)
98.6% positive feedback
Price:
$862.15
Free 2-4 day delivery
Get it between Wed, Dec 3 and Fri, Dec 5
Returns:
30 days returns. Seller pays for return shipping.
Condition:
New
Athena Big Bore Cylinder Kit 58mm 144cc Kit includes aluminum cylinder with nickel-carbide coating designed with larger water jackets Specially designed, high performance, hard anodized power valves (cannot use OEM) Forged piston with molybdenum coating Does not include cylinder head. Fits the following models: YAMAHA YZ125 2005-2021 YAMAHA YZ125X 2020-2022

About this product

Product Identifiers

BrandAthena
Manufacturer Part NumberP400485100030
eBay Product ID (ePID)171219836

Additional Product Features

Part TypeBig Bore Cylinder Kit (144cc)

All listings for this product

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Ratings and Reviews

4.4
10 product ratings
  • 7 users rated this 5 out of 5 stars
  • 2 users rated this 4 out of 5 stars
  • 0 users rated this 3 out of 5 stars
  • 0 users rated this 2 out of 5 stars
  • 1 users rated this 1 out of 5 stars

Would recommend

Good value

Good quality

Most relevant reviews

  • Gore?

    Head had indentations around machined surfaces. Power valves would not slide freely in cylinder. Power valve machined surfaces in cylinder appeared to be bead blasted as had the whole cylinder except the head sealing surface. Required using old power vavle actuating hardware.

    Verified purchase: YesCondition: New

  • Well worth the time and money.

    Took a little bit of grinding on the case to make room for the new cylinder. Be prepared to have to flush the bottom end if your not splitting the case. My kid noticed the difference immediately and said it has way more bottom end. Mild jetting will need to be done as it was a little bit lean after instillation.

    Verified purchase: YesCondition: New

  • Worth the money is you can afford it.

    Very nice kit. Makes a big difference in the low end.

    Verified purchase: YesCondition: New

  • As described

    Just gotta shave a bit of your casing so you can put it in but besides that wow my bike runs amazing

    Verified purchase: YesCondition: New

  • Athena Big bore kit

    Only thing I wish it included would be the nuts for the base and head. On the bike and running awesome!

    Verified purchase: YesCondition: New

  • Athena Cylinder

    Good product!

    Verified purchase: YesCondition: New

  • Big bore

    Fit as described

    Verified purchase: YesCondition: New

  • Athena kit

    Kit is great improvement to a stock 125. Just remember most kits do not come with wrist pin bearing so be sure to order one separately

    Verified purchase: YesCondition: New

  • Excelent

    Excelent

    Verified purchase: YesCondition: New