1973 Honda Z50A K4 50cc Complete Top End Kit 12200-GK4-761 12301-086-000
SKU: 96295251644

1973 Honda Z50A K4 50cc Complete Top End Kit 12200-GK4-761 12301-086-000

$69.99 $77.77
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Description

1973 Honda Z50A K4 50cc Complete Top End Kit 12200-GK4-761 12301-086-000Honda ST 50 Dax C 50 Z 50 Monkey Z50R XR CRF 50 50cc Complete Top End Kit Features: Complete engine cylinder Top end rebuild kit for Honda 50cc. If your cylinder blows through, the compression is too low, or even a piston seizure has occurred, then this kit is exactly the right thing for you. Kit includes cylinder, cylinder head, piston, rings, pin, clips & top end gasket kit (you get exactly what is pictured). Includes all gaskets pictured to rebuild

Honda ST 50 Dax C 50 Z 50 Monkey Z50R XR CRF 50 50cc Complete Top End Kit

Features:
Complete engine cylinder Top end rebuild kit for Honda 50cc.
If your cylinder blows through, the compression is too low, or even a piston seizure has occurred, then this kit is exactly the right thing for you.
Kit includes cylinder, cylinder head, piston, rings, pin, clips & top end gasket kit (you get exactly what is pictured).
Includes all gaskets pictured to rebuild top end.
Kit is for standard bore size - 39mm, 13mm steel piston pin.
This kit is excellent as a low-cost replacement for defects in the original cylinder.

Specifications:
Condition: Aftermarket 100% Brand New
Quantity: 1 Set
Material: Aluminum
Displacement: 49cc
Bore Type: Standard Bore
Bore Size: STD 39mm
Pin Diameter: 13mm
Cooling system: Air cooled

Replacement Part Number:
Cylinder: 12101-GB2-000
Cylinder Head: 12200-GK4-761
Cylinder Head Cover: 12301-086-000
Cylinder Head Cover Gasket: 12391-035-306, 12391-GB2-000
Cylinder Head R Side Cover: 12331-GB0-910
Cylinder Head R Side Cover Gasket: 12394-GB0-910
Cylinder Head L Side Cover: 12341-065-920
Cylinder Head L Side Cover Gasket: 12395-GB2-306
Valve Tappet Cap(x2): 12361-035-000
Cylinder Base Gasket: 12191-GW8-681, 12191-GW8-682, 12191-035-010, 12191-035-000
Cylinder Head Gasket: 12251-GBJ-003
Piston (Std): 13101-GBZ-701, 13101-GBZ-700
Pin, Piston: 13111-GB2-000
Piston Ring Set (Std): 13011-GBZ-702
Circlips, piston: 13115-001-000
Valve Stem Seals: 12209-GB4-681
Carb Insulator Gasket: 16201-165-A10

Fits Models:
Fit for Honda - 2004-2009 - CRF50F - Mini Cycle
Fit for Honda - 2011-2019 - CRF50F - Mini Cycle
Fit for Honda - 2000-2003 - XR50R - Mini Cycle
Fit for Honda - 1969-1978 - Z50A - Mini Trail
Fit for Honda - 1979-1999 - Z50R
Fit for Honda - 1986 - Z50RD
Fit for Honda - 1988 - ZB50
Fit for Honda - 1967 - Z50M
Fit for Honda - 1968-1969 - Z50A - K0
Fit for Honda - 1969-1970 - Z50A - K1
Fit for Honda - 1970-1971 - Z50A - K2
Fit for Honda - 1972 - Z50A - K3
Fit for Honda - 1973 - Z50A - K4
Fit for Honda - 1974 - Z50A - K5
Fit for Honda - 1975 - Z50A - K6
Fit for Honda - 1976 - Z50A - 76'/ Z50J1
Fit for Honda - 1977 - Z50A - 77'/ Z50J1
Fit for Honda - 1978 - Z50A - 78'/ Z50J1

Also fits Dax ST, Monkey, Gorilla, Chaly, SS, C, CD with 6 Volt (!) series engine, Jincheng, Dax Q5, Gorilla Q7, Sasy with 50cc cylinder head!
Fit for Honda - 1978-1990 - Z50J (6v)
Fit for Honda - 2009-2018 - Z50J (FI)
Fit for Honda - 1978-1988 - Z50G Gorilla (6v)
Fit for Honda - 1988-1990 - ST50 Dax
Fit for Honda - 1985-1996 - C50 Cub

(Compatibility Chart is for Reference ONLY!!!)
(Please Compare with Your faulty unit and the image we provided to Decide Fitment)

Package Includes:
1x Cylinder
1x Cylinder Head
1x Cylinder Head Cover
1x Cylinder Head Cover Gasket
1x Cylinder Head R Side Cover
1x Cylinder Head R Side Cover Gasket
1x Cylinder Head L Side Cove
1x Cylinder Head L Side Cover Gasket
2x Valve Tappet Caps
1x Cylinder Base Gasket
1x Cylinder Head Gasket
1x 39mm Piston (Std)
1x Piston Pin
1x Piston Ring Set (Std)
2x Circlips
2x Valve Stem Seals
1x Carb Insulator Gasket
1x O-Ring kit

Note:
Carefully compare to your old parts to be sure this is the correct part for your machine.

The product on offer is an accessory or spare part and thus is not an original product of the vehicle manufacturer.
The name of the vehicle manufacturer is stated only as an indication of the determination of the product being offered as an accessory or spare part, to clarify, for which vehicle the product on offer Fits.

Warranty:
1. Returns: Customers have the right to apply for a return within 60 days after the receipt of the product
2. 24-Hour Expert Online: Solve your installation and product problems

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 96295251644

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Donna M. Weigel
Massapequa, US
★★★★★ 5
Great Clean Alternative to Traditional Mouthwash, LOVE this!!
Flavor Name: Mint, Size: 3.5 Ounce (Pack of 1)
I’ve been really impressed with these Boka mouthwash tablets. They’re fluoride‑free and alcohol‑free, which is exactly what I was looking for, and the hydroxyapatite is a nice bonus for supporting enamel without the harshness of traditional mouthwashes. The tablets dissolve easily, the flavor is refreshing without being overpowering, and there’s no burning sensation at all. Do NOT chew and swallow like I did the first time. Chew, get salva going and swish. My teeth never felt so clean!!! I also love that they’re travel‑friendly and cut down on plastic waste compared to big bottles. My breath feels fresh, and my mouth feels clean without that chemical aftertaste. If you’re trying to switch to a cleaner, gentler oral‑care routine, these are a great option.
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Reviewed in the United States on March 25, 2026
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Windchimed
Draper, US
★★★★★ 5
Tasty, effective, and helpful against thrush
Flavor Name: Citrus Mint, Size: 3.5 Ounce (Pack of 1)
This is a good plastic-free, portable form of mouthwash. Pop one or two tablets in your mouth, chew well, add a little water if your mouth is particularly dry (mine is), swish, and spit. That's it. They don't burn like regular mouthwash, and they leave a nice flavor that isn't overpowering and that lasts longer than other mouthwashes have for me. It's a balanced flavor, if that means anything to you - basically, my mouth somehow feels right afterwards. I was skeptical about the claim that these improve the mouth microbiome, but they've virtually eliminated the thick white layer (presumably thrush) that I've been fighting to clear off my tongue forever. So, yeah, these are definitely a winner.
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Reviewed in the United States on December 24, 2025
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Realtor Wil
West Palm Beach, US
★★★★★ 4
More like a mint candy than mouthwash.
Flavor Name: Mint, Size: 3.5 Ounce (Pack of 1)
Hard to describe this product. Does it work like your typical mouthwash? No. Does it leave your mouth feeling minty and fresh? Yes, to a certain extent. Would I consider this an alternative to mouthwash on a consistent basis? No, it's ok for traveling because it's easy to transport. When you chew this tablet, it has the texture and feel of a traditional mint. It's chalky and breaks up easily.
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Reviewed in the United States on April 28, 2026
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Amazon Customer
Massapequa, US
★★★★★ 5
Great Product
Flavor Name: Citrus Mint, Size: 3.5 Ounce (Pack of 1)
I absolutely love this product! It keeps my breath fresh and no sensitivity issues.
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Reviewed in the United States on May 30, 2026
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mellissande
Natrona Heights, US
★★★★★ 3
Not a fan of this one
Flavor Name: Mint, Size: 3.5 Ounce (Pack of 1)
I am not a fan of this product. As many of the reviews noted, the flavor is very strong. I was surprised it wasn't more minty. This is a very herbal concoction. It also tastes of the other very strong herbs, especially the rosemary. According to the instructions, this product should be used once a day for 30 seconds. I prefer a product I can use twice a day for 45 seconds to a minute. My experience is that it takes 30 seconds just to crush it up enough to swish it around and I don't have enough saliva in the morning due to overnight dry mouth. I have to add a little water. The tablets never crush completely and leave a mess in the sink that has to be carefully rinsed away. If I use them more often, my mouth dries out too much and tastes like the tablets all day long. It's not a bad taste but I expect it to go away after a half-hour (or so). They are really chalky. The container isn't bad, but doesn't pour 1 tablet out at a time. Meh. I don't like touching a bunch of them each time. There is a desiccant packet in with the tablets to protect them. I am not sure this would stay closed during travel or be allowed on a plane in carry-on. It should travel ok otherwise because it's not a liquid, but I haven't tried it. I will probably not buy this product again, but in all honesty, I have bought far worse products and been disappointed far more by them.
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Reviewed in the United States on December 3, 2023

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