Scooter Stage 3 Performance-139QMB and GY6-100cc 50mm Big Bore-A9 Cam-20mm Carb-Gears

Scooter Stage 3 Performance 139QMB and font b GY6 b font 100cc 50mm Big Bore A9
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50mm Big Bore Kit Performance Coil AC CDI for GY6 50cc Upgrade 100cc 139QMB Chinese Scooter
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Availability: in stock
Price:  69.65 € / piece


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45 days Money back 45 days Money back Returns accepted if product not as described, buyer pays return shipping; or keep the product & agree refund with seller.
On-time Delivery On-time Delivery
Guarantees: On-time Delivery 60 days

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What’s Included & Specifications
Big Valve Head
-Valve Length- 64mm
-Intake Valve Diameter- 23mm (stock is 18.5mm)
-Exhaust Valve Diameter- 20mm (stock is 16mm)
-Dish Diameter- 50mm
A9 Camshaft
-High Quality Steel Production
-Long Life Ball Bearings (2)
20mm Keihin Carburetor
– CVK style carburetor
– 20mm intake-side outlet
– 38mm filter-side inlet
– Accelerator pump
– Automatic electric choke (2-wire)
– Unsealed and rebuildable
-True Keihin Replica Carburetor
49/17 Performance Final Drive Gears
-2.88:1 Final Drive Gear Ratio (usually 3.41-3.71 stock)
-High Quality Steel Construction
-Angled Teeth to Reduce Noise
Cylinder
-50mm Diameter (100cc)
-Aluminum Cylinder with Steel Cylinder Walls
Piston & Rings
-50mm Aluminum Piston (83cc)
-50mm Piston Rings (high quality)
-13mm Wrist Pin & Retaining Rings
Rocker Arm Assembly
-Aluminum Rocker Arm Assembly (for 64mm valve length)
Gasket Set
-All of the required gaskets to install this kit

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1) WORLDWIDE SHIPPING. (Except some countries and APO/FPO)

2) Orders processed timely after the payment verification.

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4) The images shown are not the actual item and are for your reference only.

5) SERVICE TRANSIT TIME is provided by the carrier and excludes weekends and holidays. Transit times may vary, particularly during the holiday season.

6) If you have not received your shipment within 30 days from payment, please contact us. We will track the shipment and get back to you as soon as possible with a reply. Our goal is customer satisfaction!

7) Due to stock status and time differences, we will choose to ship your item from our first available warehouse for fast delivery.

8) Delivery Time:

1) You have 7 days to contact us and 30 days to return it from the date it was received. If this item is in your possession more than 7 days, it is considered used and WE WILL NOT ISSUE YOU A REFUND OR REPLACEMENT. There are NO EXCEPTIONS! Shipping cost is bear by both seller and buyer in half.

2) All returned items MUST BE in the original packaging and you MUST PROVIDE us with the shipping tracking number, specific reason for the return, and your po#.

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1) 12 months Manufacturer`s limited Warranty for defective items (excluding items damaged and/or misused after receipt). Accessories come with a 3-month warranty.

2) Defective items MUST BE reported and returned within the warranty period (and in the original packaging, if possible). You must tell us what the defect is and give us your order number. WE DO NOT REPAIR OR REPLACE ITEMS WITH AN EXPIRED WARRANTY.

3) You agree to all of the above-listed policies upon ordering on

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Shipping Company Shipping Cost Estimated Delivery Time
DHL 3 - 7 days
UPS Expedited 3 - 7 days
EMS 5 - 14 days
Post Air Mail Free Shipping 15 - 45 days
Return Policy If the product you receive is not as described or low quality, the seller promises that you may return it before order completion (when you click "Confirm Order Received" or exceed confirmation timeframe) and receive a full refund. The return shipping fee will be paid by you. Or, you can choose to keep the product and agree the refund amount directly with the seller.

N.B.: If the seller provides the "Longer Protection" service on this product, you may ask for refund up to 15 days after order completion.
Seller Service On-time DeliveryIf you do not receive your purchase within 60 days, you can ask for a full refund before order completion (when you click "Confirm Order Received" or exceed confirmation timeframe).
Price:  69.65 € / piece
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