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Your cart is empty.Product Description
Description:
- Good quality big bore kit.
- Compact size, easy installation.
- It will upgrade your engine from 50cc to 70cc.
- Good replacement for your old or broken one.
- Easy to install in few minutes without complicated tools.
- This is a non-OEM product, accessory only.
Specification:
- Material: Metal
- Color: Black, Gray, Silver Tone
- Master Cylinder Size: 110x100x87mm / 4.33"x3.94"x3.43"(L*W*H)
- Piston Size: 48x47mm / 1.89"x1.85"(H*D)
- Wrist Pin Size: 38x10mm / 1.50"x0.39"(H*D)
Fitment:
- for Yamaha Jog Zuma 2 Stroke 50cc
- for Apirilia Vino for Polaris
- for Minarelli 1E40QMB 2 Stroke Engine
Note:
- Please allow 1-3cm errors due to manual measurement.
- Please check the product model and your motorcycle make, model, year before purchasing.
- Please follow the maintenance manual and correct installation steps to install the product. The installation manual is not included.
Package Included:
- 1 x Master Cylinder
- 1 x Piston
- 1 x Wrist Pin
- 2 x Clamp Ring
- 2 x Piston Ring
- 2 x Gasket
CBLS
2025-09-03 11:47:48
Had a 50cc previous owner out motor oil in so rebuilt using this kit. Typical China quantity but seems to be holding up well
Romik
2025-08-24 16:17:42
Installed it the way it should be and right afterCompression will not pass 70psi not enough to fire
mel
2025-07-29 17:56:40
I mean, you get what you pay for in most instances. At 1/3 to 1/4 the price of a high quality brand name product for the same kit, It's obviously a roll of the dice. The quality isn't horrible. All the parts were there in the box at least. Only thing I wasn't happy about was one of the cooling fins were cracked and bent down. At least it's still there, so I'm gonna straighten it up and tack weld the crack. Definitely could use some cleanup around the port holes. But usable and works on a budget
Cody Christoffersen
2025-04-06 17:36:26
I got it as a quick repair but after break in it would completely stall and kill my bike every mile.
Jimmy James
2025-03-30 15:46:04
Box was taped up and look beat all to hell, jug broke, rings bent, no wrist pin, Badd Shipping see pics, piston was the only thing good, I would . was a cheap jug and light weaight thin piston ,, i will not make that mistake again. or i hope they do something about there shipping.!!!!!!
Mark harris
2025-01-26 13:02:30
Will not produce enough compression to fire!!! Poor quality lots of casting needs to be cleaned up and rings had a twist in them. Bought another from a different vendor! Much better quality and scooter is running again
Stevo C.
2024-12-21 14:21:37
I installed the kit on my scooter, after 1h after break in it had 70psi of compression and now won’t run, I’ve rebuilt many of these and I know it’s not my fault..
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