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97-04 Yamaha YZ125 YZ 125 58mm 144cc Athena Big Bore Cylinder Top End Piston Kit

US $923.36
or Best Offer
as low as $82.90/mo with
Condition:
New
Last one159 sold

Additional service available

This one's trending. 159 have already sold.
Breathe easy. Free returns.
Shipping:
Free 2-4 day delivery
Get it between Wed, Aug 20 and Fri, Aug 22 to 94104.
Located in: Gilbert, Arizona, United States
Returns:
30 days returns. Seller pays for return shipping.
Payments:
       .
As low as $82.90/mo with Klarna.
*No Interest if paid in full in 6 months on $149+. See terms and apply now- for PayPal Credit, opens in a new window or tab
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Seller assumes all responsibility for this listing.
eBay item number:202458345055
Last updated on Jul 14, 2025 10:32:01 PDTView all revisionsView all revisions

Compatibility

This part is compatible with 8 vehicle(s)
YearMakeModelSubmodelNotes
2004YamahaYZ125--
2003YamahaYZ125--
2002YamahaYZ125--
2001YamahaYZ125--
2000YamahaYZ125--
1999YamahaYZ125--
1998YamahaYZ125--
1997YamahaYZ125--
Portions of the information contained in this table have been provided by azquadparts

Item specifics

Condition
New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is ...
Non-Domestic Product
No
Machine Type
Off-road Motorcycle
Items Included
Cylinder Barrel, Gasket Set, Piston Rings, Pistons, Wrist Pins, Head Studs, Power Valves
Custom Bundle
No
Manufacturer Part Number
P400485100029
Superseded Part Number
5MV-11111-00-00, 5MV-11311-11-00, 5HD-1131D-10-00, 5HD-1132D-10-00, 4XM-11631-30-D0
Vintage Part
No
Modified Item
No
Placement on Vehicle
upper
California Prop 65 Warning
yes
Brand
Athena
Engine Type
2-Stroke
Type
Engine Rebuild Kit
Interchange Part Number
5MV-11111-00-00, 5MV-11311-11-00, 5HD-1131D-10-00, 5HD-1132D-10-00, 4XM-11631-30-D0
Manufacturer Warranty
1 Year
OE/OEM Part Number
5MV-11111-00-00, 5MV-11311-11-00, 5HD-1131D-10-00, 5HD-1132D-10-00, 4XM-11631-30-D0
Surface Finish
Silver
Features
Corrosion-Resistant, Durable
Country/Region of Manufacture
Italy
Performance Part
Yes
UPC
Does not apply
Category

Item description from the seller

About this seller

AZ Quad Parts

100% positive feedback201K items sold

Joined Mar 2004
Usually responds within 24 hours

Detailed seller ratings

Average for the last 12 months
Accurate description
5.0
Reasonable shipping cost
5.0
Shipping speed
5.0
Communication
5.0

Seller feedback (32,146)

All ratings
Positive
Neutral
Negative
  • s***s (417)- Feedback left by buyer.
    Past year
    Verified purchase
    Good quality cast about to break in this weekend
  • c***9 (8)- Feedback left by buyer.
    More than a year ago
    Verified purchase
    eBay did it again. I'm very satisfied with the Athena big bore piston and cylinder kit. My bike runs better than bran new. It have ever lasting power. My 2001 yz125 is now a 144 and feels like it I'm ready to race anything. eBay is the best. I highly recommend ebay for the quality and service. Keep up the great work.
  • h***g (126)- Feedback left by buyer.
    More than a year ago
    Verified purchase
    Great product!
See all feedback

Product ratings and reviews

4.7
7 product ratings
  • 6 users rated this 5 out of 5 stars
  • 0 users rated this 4 out of 5 stars
  • 1 users rated this 3 out of 5 stars
  • 0 users rated this 2 out of 5 stars
  • 0 users rated this 1 out of 5 stars

Would recommend

Good value

Good quality

Most relevant reviews

  • Over priced

    The new power valves didn’t fit I have to file them down to get them to work . Also doesn’t come with wrist pin bearing

    Verified purchase: YesCondition: NewSold by: apex*racing

  • Woke up YZ 125

    Nice kit

    Verified purchase: YesCondition: NewSold by: apex*racing