Koso 54mm 150cc Big Bore Kit MB640000 for Honda Grom 125 Monkey 125 2024-2025
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- SKU:
- DS01-1421
- MPN:
- MB640000
- Condition:
- New
Description
Important: Must use 91-94 octane Premium gas.
To run correctly you will also need a performance intake, throttle body, intake manifold, oil pump, camshaft, ECU tune and/or high-flow injector, and exhaust.
See description for a list of additional parts from Koso.
| Specifications | |
|---|---|
| Displacement: | 150 cc |
| Cylinder Material: | Aluminum |
| Piston Size: | 54 mm |
| Piston Construction: | Forged |
| Compression Ratio: | 11.38:1 |
| Includes: | Piston ring set, piston, wrist pin, head and base gaskets, and cylinder |
| Required additional components (Sold separately) | |
|---|---|
| Description | Partnumber |
| Racing air filter | DK640000 |
| Racing air filter cover | DL640000 |
| 28mm Airbox connection tube | DM640000 |
| 23 to 29mm Intake Manifold | DP640000 |
| 28mm Throttle Body | DY640000 |
| High Flow Oil Pump | NF640000 |
| Performance Camshaft | MM640000 |
| ECU Modfication (If using stock injector) | ----- |
| Performance Exhaust | ----- |
Product Features
- This kit features a powder coated cylinder and a forged piston with a compression ratio of 11.38:1
- Retains the ability to run on premium pump gas and maintains the reliability of a stock motor
| Make | Model | Year |
|---|---|---|
| Honda | Grom | 2024-2025 |
| Honda | Grom 125 | 2022-2023 |
| Honda | Grom 125 ABS | 2022-2023 |
| Honda | Grom ABS | 2024-2025 |
| Honda | Monkey Z125MA ABS | 2022-2025 |
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