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Motorcycle engine - parts
Flex Tech Sprint 50 4T - Page 5

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Found: 431
Engine complete with SLS short 101 Octane - BT17459
Set of gaskets 101 Octane - BT13853
Foot starter lever 101 Octane - BT12007
Set of engine seals 139 QMB - BT17304
Head gasket 139 QMB 101 Octane - BT20019
Engine bearing set 101 Octane - BT12281
M12x1.25 variator nut SW18 GY6 4T - 49391

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Products reviews

2024-09-24, 13:47

poland

Jan

Oil filler cap with dipstick for engine 139 QMB 101 Octane

The picture doesn't match the look of the sent cap with the gauge but since it fit and performs its function I didn't bother.

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2025-08-24, 05:31

poland

Jari-Matti

GY6 50cc 39mm 4t Cylinder

14 year old son's first tuning and learning how to install...

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Reliable opinion

2016-05-12, 08:14

poland

Daniel

GY6 50cc 39mm 4t Cylinder

Cylinder and piston good quality but rings unfortunately not. After 150 km of mileage the gap of the rings after inserting into the cylinder was 3.2 mm Yes does not lie. The engine did not smoke but did not have its power. The solution to this was to put on rings made professionally from good quality materials. The cored rings lasted 13,000 km in a Chinese scooter. In my opinion, it is worth it to buy the made-up rings for 40 PLN than to take apart the engine every 2 weeks.

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2016-05-12, 08:14

poland

Daniel

GY6 50cc 39mm 4t Cylinder

Cylinder and piston good quality but rings unfortunately not. After 150 km of mileage the gap of the rings after inserting into the cylinder was 3.2 mm Yes does not lie. The engine did not smoke but did not have its power. The solution to this was to put on rings made professionally from good quality materials. The cored rings lasted 13,000 km in a Chinese scooter. In my opinion, it is worth it to buy the made-up rings for 40 PLN than to take apart the engine every 2 weeks.

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Reliable opinion

2021-01-22, 11:10

poland

Artek

Foot starter mode GY6 4T 139 QMB 101 Octane

I am not satisfied with the purchase because in the description it was written that the product fits kymco s8 2009 and in fact it is too long and the shaft from the half moon is too narrow and does not work with the half moon :( :( :( I am not satisfied with the purchase it was my first purchase on gmoto no happy

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Gmoto's reply If the products do not fit your motorcycle, you can easily return them by filling out the claim form at https://gmoto.com/returns. We will cover the return cost.
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Reliable opinion

2021-03-07, 10:47

poland

Adrian

Foot starter shaft protection 139 QMB 101 Octane

I have been buying parts from gmoto for several years and I am very satisfied with the quality of the product, as it is made very solidly and aesthetically pleasing. The shaft protector that I recently bought fits perfectly to my 139qmb 4T engine

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2020-08-21, 13:17

poland

Artur

GY6 50cc 39mm 4t Cylinder

Toros Fresco 50 scooter purchased cylinder in the store made of good quality materials. Everything fits elegantly , there were no problems with installation. Now nothing but to ride. I recommend to everyone.

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2025-06-28, 07:30

poland

Andrus

Foot starter shaft protection 139 QMB 101 Octane

Fitted perfectly and the quality was very good.In addition, fast shipping and a good price.I would recommend this product to others.

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Reliable opinion

2024-08-30, 06:38

poland

Jakub

Foot starter lever 101 Octane

The lever fits perfectly. It looks very nice. Affordable price. Lever at the scooter Kymco super 9 50.

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2024-09-06, 12:07

poland

Michał

Gearbox bearing and seal set GY6 139QMA QMB 4T

Merchandise not as described for the engine so before you order check what kind of bows you have in the drive.

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2024-02-03, 07:01

poland

Piotrbronson

Foot starter shaft protection 139 QMB 101 Octane

Seger, it can be, depends how you hit you have to be careful when assembling if you twist it, it won't hold!

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2019-06-01, 20:39

poland

Artur

Plastic foot starter spring ring 139 QMB 101 Octane

Kingway coliber fart, the ring will unfortunately break quickly.

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2021-04-14, 08:53

poland

Igor

Foot starter shaft protection 139 QMB 101 Octane

For scooter 139qmb 4t fits perfectly. Recommended.

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