YP100 Cylinder Head

Brand: Mortch Motor
Product Code: MIYP100-5002

Product Viewed: 301

Availability: Pre-Order 1-2 Weeks🔔

Weight: 2.00kg

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US$27.50

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🔧 Yamaha 100 Cylinder Head

📦 Part Number: MIYP100-5002

⚙️ High Quality Cylinder Head · Air Cooled · Linhai LY149QMG

📍 Compatible Models: Yamaha RS100 · JOG100 · Linhai LY149QMG Engine

✅ Precision Cast · Optimized Combustion Chamber · OEM Specification · Direct Replacement

📋 Product Overview

This product is a high-quality Yamaha 100 Cylinder Head, part number MIYP100-5002. This cylinder head is specifically designed for air-cooled Yamaha RS100, JOG100, and Linhai LY149QMG engines — an ideal replacement for engine overhauls or power restoration projects.

The cylinder head is one of the most critical engine components, sealing the top of the cylinder to form the combustion chamber while housing the valve train, spark plug, and other essential components. The cylinder head directly influences compression ratio, combustion efficiency, and heat dissipation performance. This cylinder head features precision casting with optimized combustion chamber shape, valve seat angles, and spark plug position matching OEM specifications — ensuring restored original engine performance.

✅ High Quality Assurance: Manufactured from premium aluminum alloy with excellent heat dissipation. Key dimensions match OEM parts for a perfect fit and reliable operation.

📐 Specifications

🔖 Part Number: MIYP100-5002

🏷️ Product Name: Cylinder Head

🔧 Displacement: 100cc

🌡️ Cooling Type: Air Cooled

🧪 Material: Aluminum Alloy

📍 Compatible Engine: LY149QMG · GY6 100cc

🏍️ Compatible Models & Engines

This Cylinder Head (MIYP100-5002) is compatible with the following models and engines:

Yamaha RS100 · Air-Cooled 4-Stroke
Yamaha JOG100 · Air-Cooled 4-Stroke
Linhai LY149QMG Engine
GY6 100cc Air-Cooled 4-Stroke Engine
Other scooters equipped with LY149QMG / GY6 100cc engines

📌 Fitment Note: This cylinder head is designed for air-cooled Yamaha RS100, JOG100, and Linhai LY149QMG / GY6 100cc 4-stroke engines. Before installation, please confirm your engine is air-cooled and verify bore specifications. If your specific model is not listed, please contact us with your engine model for compatibility verification.

⚙️ Product Features

🔩 Precision Cast: High-quality aluminum alloy casting with optimized cooling fin design for excellent heat dissipation and structural strength.
🔥 Optimized Combustion Chamber: Combustion chamber shape strictly follows OEM specifications, ensuring compression ratio and combustion efficiency match original parts.
🔧 Precision Machined: Valve seats and spark plug mounting holes are precision-machined for perfect fitment with valves and spark plugs.
🌡️ Air-Cooled Optimized: Optimized cooling fin layout ensures excellent heat dissipation for air-cooled engine applications.
🔄 Direct Replacement: Mounting dimensions match OEM — directly replaces the old cylinder head without any modifications.

✅ Typical Signs That Cylinder Head Replacement Is Needed:
• Engine hard to start — low compression.
• Noticeable power loss — poor acceleration.
• Cylinder head warped causing coolant or oil leaks.
• Spark plug mounting hole threads stripped or damaged.
• Visual inspection reveals worn valve seats or cracks in the combustion chamber.
Replacing a damaged cylinder head promptly restores compression ratio and engine power.

✅ Installation Tips:
1. Thoroughly clean the engine exterior before removing the old cylinder head to prevent debris from entering the cylinder.
2. Inspect the cylinder block mating surface and remove all old gasket residue.
3. Before installing the new cylinder head, ensure the piston is at TDC.
4. Install the new gasket and tighten cylinder head bolts in OEM cross-pattern sequence in 2-3 even stages to specified torque.
5. Install the valve train and adjust valve clearance to specifications.
6. After installation, perform a break-in period and check for any gas or fluid leaks.
Professional installation by a qualified technician is strongly recommended. Improper installation may cause cylinder head warping or sealing failure.

⚠️ Important Notice: This product is a Yamaha 100 Cylinder Head, part number MIYP100-5002. Compatible with air-cooled Yamaha RS100, JOG100, and Linhai LY149QMG / GY6 100cc 4-stroke engines. Combustion chamber volume may vary across different model years or versions. We recommend confirming your original cylinder head specifications before purchase. Images are for reference only; actual product may vary.

🔧 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.