Confirm this item fits

Add your vehicle to make sure this item fits and qualifies for free returns.

2007
Yamaha
YZ125

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

Ride Today Powersports (12890)
99.1% positive feedback
Price:
$923.36
Free shipping
Estimated delivery Mon, Oct 20 - Thu, Oct 23
Returns:
60 days returns. Seller pays for return shipping.
Condition:
New
Kit also includes Athena top end gasket set with required seals and hardware. 2020-2022 Yamaha YZ 125 X - -. 2005-2021 Yamaha YZ 125 - -. Cylinder Bore Coating. Cylinder Kit. Engine Type.

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

Buy It Nowselected
New

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