YP100 Cylinder Block

Brand: Mortch Motor
Product Code: MIYP100-5004

Product Viewed: 279

Availability: In Stock

Weight: 1.48kg

Packing Size: 14.00 x 13.00 x 10.00cm

0 reviews / Write a review

US$12.38 3 SOLD

Shipping To：

More Quotes

🏍️ Yamaha 100 Cylinder Block

📦 Part Number: MIYP100-5004

⚙️ High Quality Cylinder Block · Air Cooled · Linhai LY149QMG

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

✅ Precision Cast · Wear-Resistant Sleeve · OEM Specification · Direct Replacement

📋 Product Overview

This product is a high-quality Yamaha 100 Cylinder Block, part number MIYP100-5004. This cylinder block 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 block is one of the most critical engine components, guiding piston movement and forming the combustion chamber. With accumulated mileage, the cylinder wall may suffer from wear, scoring, or out-of-round conditions, resulting in reduced compression pressure, oil burning, and power loss. This cylinder block features precision casting with a high-quality wear-resistant sleeve to restore original engine performance.

✅ High Quality Assurance: Manufactured to exact original specifications. Key dimensions including bore diameter, height, and port positions match OEM specifications for a perfect fit and reliable operation.

📐 Specifications

🔖 Part Number: MIYP100-5004

🏷️ Product Name: Cylinder Block

🔧 Displacement: 100cc

🌡️ Cooling Type: Air Cooled

🔩 Cylinder Sleeve: Wear-Resistant Cast Iron Sleeve

📍 Compatible Engine: LY149QMG · GY6 100cc

🏍️ Compatible Models & Engines

This Cylinder Block (MIYP100-5004) 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 block 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 Cylinder: High-quality aluminum alloy casting provides excellent heat dissipation and structural strength.
🛡️ Wear-Resistant Sleeve: Cylinder sleeve features surface hardening treatment for superior wear resistance and extended service life.
📐 OEM Specifications: Manufactured to original factory drawings — bore diameter, height, and mounting dimensions match OEM parts.
🌡️ Air-Cooled Optimized: Optimized cooling fin design ensures excellent heat dissipation for air-cooled engine applications.
🔄 Direct Replacement: Mounting dimensions match OEM — directly replaces the old cylinder block without any modifications.

✅ Typical Signs That Cylinder Block Replacement Is Needed:
• Engine hard to start, especially when cold.
• Noticeable power loss, poor acceleration, or reduced top speed.
• Excessive oil consumption with blue smoke from the exhaust.
• Compression test reading below factory specification.
• Visual inspection reveals scoring, scratches, or a wear ridge on the cylinder wall.
Timely cylinder block replacement restores engine power, reduces fuel consumption, and extends overall engine life.

✅ Installation Tips:
1. Thoroughly clean the engine exterior before removing the old cylinder to prevent debris from entering the crankcase.
2. Inspect the crankcase mating surface and remove all old gasket residue before installing the new cylinder block.
3. When installing piston rings, pay attention to ring end gap orientation — stagger them as specified in the manual.
4. Tighten cylinder bolts to OEM torque specifications in 2-3 even stages.
5. After installation, perform a break-in period — avoid hard acceleration and heavy loads.
Professional installation by a qualified technician is strongly recommended. Improper installation may cause cylinder scoring or sealing failure.

⚠️ Important Notice: This product is a Yamaha 100 Cylinder Block, part number MIYP100-5004. Compatible with air-cooled Yamaha RS100, JOG100, and Linhai LY149QMG / GY6 100cc 4-stroke engines. Cylinder height and port positions may vary across different model years or versions. We recommend confirming your original cylinder 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.