WH 125cc Cylinder Head

Brand: Mortch Motor
Product Code: MIWH125-3002

Product Viewed: 132

Availability: Pre-Order

Weight: 1.35kg

Packing Size: 15.00 x 15.00 x 15.00cm

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US$22.00 24 SOLD

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WH 125cc Cylinder Head

Engine Type: 153QMI

Fits Keeway ARN 125, F-act 125, Matrix 125, RY8 125, RX9 LEONE, and other models equipped with QJ153QMI engine

📋 Product Overview

This is a WH 125cc cylinder head designed for the new 153QMI engine type. The 153QMI is a modified version of the standard GY6 engine (152QMI), featuring a taller cylinder head and longer valves for improved intake and exhaust efficiency.

Key Differences:

Cylinder Head Height: 73mm (standard GY6 is 60mm)
Valve Length: Longer than standard GY6 version
Valve Diameter: Intake 26.6mm / Exhaust 23mm

✨ Upgraded Design: Taller cylinder head design and larger valve sizes significantly improve intake and exhaust efficiency, enhancing engine power output.

📐 Specifications

Engine Type 153QMI / QJ153QMI

Cylinder Head Height 73mm

Intake Valve Diameter 26.6mm

Exhaust Valve Diameter 23mm

Base Engine GY6 (152QMI) Modified

🔧 Compatible Models

Keeway ARN 125
Keeway F-act 125
Keeway Matrix 125
Keeway RY8 125
Keeway RX9 LEONE
Other models equipped with QJ153QMI engine

📌 Compatibility Note: This cylinder head is designed for QJ153QMI engines and is NOT compatible with standard GY6 engines (152QMI). Please verify your engine model before purchasing. Due to the different cylinder head height (73mm vs 60mm), ensure appropriate valve and timing chain lengths are used.

⚙️ Product Features

Modified Design: The 153QMI is an upgraded version of the standard GY6 engine, featuring a taller cylinder head and larger valves for improved intake and exhaust efficiency.
Larger Valves: Intake 26.6mm / Exhaust 23mm, significantly increasing airflow compared to standard GY6.
Taller Cylinder Head: 73mm overall height design, paired with longer valves to optimize combustion chamber shape and valve lift characteristics.
Quality Casting: Made from high-quality aluminum alloy for excellent heat dissipation and structural strength.
Precision Machined: Valve seats and combustion chamber are precision machined for proper sealing and combustion efficiency.

✅ Installation Tip: When replacing the cylinder head, inspect and replace the cylinder head gasket as well. Due to the different cylinder head height compared to standard GY6, ensure the correct timing chain and valves are used. Valve clearance must be readjusted after installation. Professional installation is recommended to ensure proper engine operation.

⚠️ Important Note: This product is a WH 125cc cylinder head for 153QMI / QJ153QMI engines. It is NOT compatible with standard GY6 engines (152QMI). Please verify your engine model before purchasing. Images are for reference only; actual product may vary slightly due to batch differences.

🔧 Compatibility Notice

Please verify that this part fits your specific vehicle model and year. Many vehicles share similar names but use different components depending on year or market region.
We strongly recommend cross-checking with your vehicle's owner's manual or contacting us for confirmation before placing your order.

📄 Product Disclaimer

Product images, measurements, and descriptions are for reference only. Slight variations in color or appearance may occur due to manufacturing batches or photography lighting—functional specifications remain identical to the ordered part.
Professional installation is mandatory. Mortch Motor assumes no liability for damages, injuries, or losses resulting from improper installation, misuse, unauthorized modification, or abnormal operation.

💰 Import Duties & Taxes

All listed prices EXCLUDE shipping costs, import duties, taxes, and customs clearance fees. These charges (if applicable) are determined and collected by your local customs authority and are solely the buyer's responsibility.
In case of return due to unpaid duties/taxes or refusal to clear customs, the buyer shall bear the original shipping cost, return shipping fees, and any associated administrative charges deducted from the refund.

📌 Order Confirmation: By completing your purchase, you acknowledge that you have read, understood, and agreed to all terms above. For any questions, please contact our support team prior to ordering.