NBS JAPAN Motorcycle Engine Reviews

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NBS JAPAN

26 Apr 2021

80cc Big Bore Cylinder Kit

Fits: HONDA GIORCUB, HONDA SUPER CUB 50, HONDA CHALY 50, HONDA SUPER CUB 50, HONDA SUPER CUB 50, HONDA BENLY50CD50, HONDA DAX, HONDA JAZZ, HONDA GORILLA, HONDA LITTLE CUB, HONDA CUB press 50, HONDA LITTLE CUB, HONDA CUB press 50, HONDA CUB press 50, HONDA MOTRA, HONDA XR50 MOTARD, HONDA MONKEY BAJA, HONDA MONKEY, HONDA MONKEY, HONDA MONKEY

Japanese Webike user

1/5

This Parts was a failure.

I bought the 75cc→80cc for a change of pace.

When I went to assemble it, I couldn't fit the …Cylinder Skirt (lol).
It seemed to be 2cm higher than the Skirt for 75 (lol)
I also looked up the fitment and apparently the one I bought was an outlier.
I think it's my failure rather than Parts because there are a lot of people who rated it highly and installed it.

I ended up going back to 75cc and High Camshaft.
I'm in good shape.
If possible, I think that a domestic Manufacturer is better.
Since they come from far across the sea… View detail

NBS JAPAN

08 Dec 2019

80cc Big Bore Cylinder Kit

Japan User(translated)

4/5

It's a product with mixed reviews, but, it's good

Officially, the Piston is 81.2 CC, and since the Piston itself is a little shorter, the top dead center of compression is lowered and the compression ratio The coefficient is 8:1 (confirmed by the manufacturer), which is lower than that of other manufacturers
In other words, the durability is promising, but the output is adequate, but don't worry It means you can turn it around, right?
White smoke after assembly is said in other sites, and at first I had a lot of white smoke After breaking in the cylinder head bolt and tightening it, the cylinder head bolt is released It's gone
The Gold genus part of the Head Gasket is thick, so I thought that was something that needed to be addressed It is View detail

NBS JAPAN

15 Nov 2015

80cc Big Bore Cylinder Kit

Japan User(translated)

1/5

Let's go cheap, this is a thing!

It was cheaper than KITACO's Bore Up Kit, so I put out my hands, but it was only looks. Come up and build up Engine, after a while smoke comes from the Exhaust System. Open and look Piston black. Degradation and remembrance exchange of Stem Seal. I was betrayed brilliantly. Even though it is only running for 2, 30 km, Piston, to Cylinder
There is uneven wear. It does not become usable at all. Those who feel attractive to the price purchase, please prepare your purchase! View detail

NBS JAPAN

23 Oct 2015

80cc Big Bore Cylinder Kit

Japan User(translated)

4/5

More than price

Surprised by the power of C50, considering Bore up. I found this when I was coloring Parts. It is very affordable, and it also has good accuracy, I like it. Simple packing is also good. However, because the Instruction Manual is not attached, it seems that you need some kind of knowledge to install it yourself. For familiar people, it is a super profitable kit.
All necessary parts are also set.. Because it is for STD Head, high rotation is a bit weak, but Torque gets fat and it gets easier to ride. It is a recommended item. ○ ○ Co ○ Ke ○ ○ It is more advantageous than. View detail

NBS JAPAN

12 Jun 2015

80cc Big Bore Cylinder Kit

Japan User(translated)

3/5

Cost performance is good, but remodeling is planned.

I used it as a handy Bore up.
Clearance seems to be appropriate and turns more lightly than when it was made to 75 cc of No Brand.
It is hard to rust with Aluminum cylinder, inexpensive and reliable Bore up using Normal head
I think that it is quite a good one.

... but there are drawbacks.

Firstly it is difficult to arrange Gasket as it is 50 mm bore.. Although it can also be diverted, basically the company's
You will be using a Gasket Set. (Horizontal Type Bore up is full of 52 mm 88 cc
I do not care whether.. )

Next is that it is designed exclusively for NORMAL 50ccHead. Adapted to 50 cc of Small Small Combustion Chamber Capacity
As a result, if you switch to a Big valve head, the compression ratio decreases drastically.
(Large body 6 in any Head. It will fall to about 5. I can not catch up with Gasket adjustment)
Well this is not limited to BPC's Bore Up Kit, but "12V50 Kit for 12V 50
It can only be used for Head "must be borne in mind that it is necessary.
(12V50Head is a design for each part dedicated to 50 cc, so Power up plan which sticks too much to this
Personally I do not recommend it.. )

It is a good item if you can understand only the above two points. Because it is cheap, do not think too deeply, proceed with remodeling
Even if you feel the limit, it is ant if you accept it as a study with that.
There is no problem in getting on a normal ride by dividing it into Paris.. View detail