Welcome to MJ Select.
We are Japanese seller. We ship authentic items from Japan.
Please enjoy shopping with peace of mind!
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【About Included Manuals】
If a manual is included, it will primarily be in Japanese. We recommend using image translation apps if needed.
【Voltage Compatibility】
When using electrical appliances, please note that they are designed for Japanese voltage specifications (90-110V), so if you use them with a different voltage, it may cause a malfunction.
【Plug Type】
Our products use Japanese plug types (A or B type).
Please use a conversion adapter if necessary.
【Important Note on Transformers and Adapters】
A transformer adjusts voltage to match your device’s requirements.
A conversion adapter only changes the plug shape and does not adjust voltage.
Using only a conversion adapter without a transformer may result in damage to the product.
【Liability】
We are not responsible for malfunctions or damages caused by improper use, such as operating the product without a transformer.
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Compatible models: Grom: JC92-1000001~1099999 | *Grom (JC92-1100001~8BJ-JC92 model) cannot be used as it does not have I-MAP settings.
Aluminum cast iron sleeve cylinder (black) | No high camshaft
Piston: Casting specification (3R), molybdenum coated finish
Displacement: 145cc | Bore diameter: φ54 | Stroke: 63.1mm (standard)
Compression ratio: 10.5:1 | Premium unleaded gasoline
*I-MAP etc. is required for installation (required parts vary depending on the degree of tuning)
*Because it exceeds 125cc, it cannot be used on public roads.
This is a bore-up kit that allows you to use the stock cylinder head as is.
