50mm Bore Cylinder Head Kit for GY6 50cc to 100cc Engine with 69mm Valves scooter taotao kazuma ATV Moped
Condition: New
$55.88
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Availability:
In Stock.
Arrives
Wednesday, Oct 28
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At a glance
- Condition
- New
Features 4
- Fit GY6 50cc to 100cc 139QA 139QMB Engine
- Head Valve length 69mm, not 64mm
- Cylinder Bore Diameter : 50mm
- Kit includes: Cylinder head, cylinder block assembly, intake pipe screw, exhaust pipe screw, exhaust pipe nut, exhaust pipe gasket four locating pins.
Specs 7
| Manufacturer | HY |
|---|---|
| Brand | ZTDZZH |
| Model | TG-100 |
| Item Weight | 4.4 pounds |
| Package Dimensions | 6.61 x 6.18 x 6.02 inches |
| Item model number | 50 |
| Manufacturer Part Number | 50 |
No specs match.
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Wednesday, Oct 28
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
šµ
Todo de muy buena calidad lo recomiendo
Reviewed in the United States on December 2, 2025 by Armando Sanchez del risco
Awesome 100cc bbk
I was on Amazon looking to purchase a bbk for my gy6 50cc scooter. I ran across this one here what cought my interest was the price $ for under $60.00 you cant beat it šµšš I like the fact that the 4 dowel/locating pins come with the kit because most bbk don't include them. In the photos I shared you will see a few other items that don't come in this kit please be sure to read what's included before purchasing !
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Reviewed in the United States on April 4, 2022 by Kevin
Comes with everything you need
Comes with everything you needTo upgrade from 50 cc to 100 cc
Reviewed in the United States on August 21, 2023 by Ricky Boyer
Cheap gasket
The black gasket pain came off and ruined the piston now I canāt even returned only last me on the bike like two weeks
Reviewed in the United States on June 3, 2023 by Salo
This brand works for the 2013 taotao 50cc well
I like this kit. Comes with everything you need to replace your top end. Obviously not the cam or cam tower or slides. But I knew this and everything fit great and had no issues. 5 Stars from me
Reviewed in the United States on April 4, 2022 by Andrew Davis
Awesome product.
Great product installed it an my scooter is sooo much faster.... Very stratified with this item would purchase again.
Reviewed in the United States on March 26, 2021 by Eddie
. If you donāt have patience, donāt do this upgrade.
Went together well. Quality seems ok for 50 bucks. Take your time . Pay attention to detail. Especially your timing .
Reviewed in the United States on August 1, 2021 by Dom Vito
The right stuff.
Great description of product and very prompt service. A good experience overall!
Reviewed in the United States on September 8, 2020 by Amazon Customer