GY6 100cc Cylinder Assy (50mm)

Brand: Mortch Motor
Product Code: MIGY90-4003

Product Viewed: 307

Availability: In Stock

Weight: 0.98kg

Packing Size: 13.00 x 12.00 x 8.00cm

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US$15.80 1290 SOLD

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100cc (GY6 Big Bore) high performance cylinder kit for 50cc GY6 139QMB scooter engines.

This scooter upgrade kit is a high quality kit that is perfect for upgrading your old 50cc 139QMB engine to 100cc so you don't get left behind in today's fast paced world.

Installing this upgrade kit will increase your engine bore size to 100cc, and includes an aluminum cylinder, piston, piston rings, and gaskets.

After installation, you will see an immediate increase in low end acceleration and an increase in top speed!

This 100cc scooter cylinder kit does not include the cylinder head. Combine this cylinder head with a high performance carburetor and exhaust for an even larger boost in performance.

📏 Specifications

Piston: Ф50mm
Piston Pin: Ф13 x 38mm

⚡ Performance Gain: Upgrade your 50cc 139QMB engine to 100cc for immediate increase in low end acceleration and top speed!

⚠️ Please verify your engine type before ordering. This kit upgrades 50cc GY6 139QMB engines to 100cc. Cylinder head is not included. Piston: 50mm, Piston Pin: 13x38mm.

🔧 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.

Tags: 139QMB, 144QMC, 147QMD, 80cc upgrades, Big Bore Kit, Block, Cylinder, GY6, High Performance, Set Motor