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Yamaha YZ 125 Piston Kit 2002 2003 2004 Namura Rings Top End Gasket Set YZ125

US $85.99
ApproximatelyC $120.56
Condition:
New
Last one307 sold
People want this. 59 people are watching this.
This one's trending. 307 have already sold.
Shipping:
Free 4 day delivery
Get it between Wed, Oct 22 and Fri, Oct 24 to 94104.
Located in: Lehi, Utah, United States
Returns:
30 days return. Seller pays for return shipping.
Payments:
     Diners Club

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Seller assumes all responsibility for this listing.
eBay item number:361036185819
Last updated on Aug 25, 2025 13:07:04 EDTView all revisionsView all revisions

Compatibility

This part is compatible with 3 vehicle(s)
YearMakeModelSubmodelNotes
2004YamahaYZ125--
2003YamahaYZ125--
2002YamahaYZ125--
Portions of the information contained in this table have been provided by motoxoutlet

Item specifics

Condition
New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is ...
Stock Bore Size 54 mm
Piston Size 53.94 mm
Brand
Namura Technologies
Engine Type
2-Stroke
Type
Top End Piston Kit
Bundle Description
Piston, ring, pin, clips, bearing and top end gasket kit
Custom Bundle
Yes
Yamaha YZ125
Years 2002 2003 2004
Top End Piston Rebuild Kit
Piston, Ring, Pin, Clips, Bearing and Gasket Kit
Manufacturer Part Number
NX-40001K
Cylinder Bore Diameter
54.00mm
UPC
Does not apply
Category

Item description from the seller

About this seller

MotoXoutlet

99.8% positive feedback338K items sold

Joined Oct 1998
Usually responds within 24 hours
MotoXoutlet is a discount retailer of Atv and UTV Snow Plows, Motorcycle Tires, Atv Tires Motorcycle Helmets. Brands like Fly Racing, Thor MX, Dunlop, Michelin, Shinko, Maxima, HMF, Kenda, Avon, ITP, ...
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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 (87,111)

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  • Comentarios automatizados de eBay- Feedback left by buyer.
    Past month
    El pedido se entregó a tiempo sin problemas
  • s***e (3351)- Feedback left by buyer.
    Past 6 months
    Verified purchase
    AAA++++++++++
  • Comentarios automatizados de eBay- Feedback left by buyer.
    Past 6 months
    El pedido se entregó a tiempo sin problemas
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Product ratings and reviews

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

Would recommend

Good value

Good quality

Most relevant reviews

  • 03 YZ125 piston kit with all the parts and gaskets included

    Bought this for 03 YZ125 and installed with new Yamaha cylinder that was damaged. The piston kit came with all the gaskets and o-rings, including the wrist pin, clips, rings, and piston. Simple to install, perfect fit (I bought the A kit because installed a brand new cylinder). Now have about 10 hours on the bike and it has 165 psi compression. Bike runs and sounds great. Had a 1999 KTM SX125 that also put a Namura piston kit in a few years ago. Rode it 2 season with about 60 hours and it still started and ran great. Compression was 125 psi when I sold it. I've read the smaller bore bikes have to be rebuilt with new rings (and) piston more often than the bigger bore, but 60 hours our of a 125cc 2-stroke riding all woods and enduros is impressive to me. I had a Wiesco forged piston ...

    Verified purchase: YesCondition: NewSold by: mrmotocross_parts

  • Good piston and rings wrong wrist pin bearing

    This is a very good product I have bought a few and this is the first one that I have actually had a problem with because the wrist pin bearing it came with the new piston and rings does not fit the wrist pin it is clearly the wrong wrist pin bearing it is way too small other than that this is a great product this is the first and only time that I have had a problem so far

    Verified purchase: YesCondition: NewSold by: motoxoutlet

  • Good product

    Good product and good shipping

    Verified purchase: YesCondition: NewSold by: motoxoutlet