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Motorcycle engine - parts
Flex Tech Thunder 25 4T

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Found: 154
Magnetic oil drain bolt M12x1.5 HLP - 3066583 Magnetic oil drain bolt M12x1.5 HLP - 3066583
Simering seal 16.4x30x5 101 Octane - IP23511
Kymco 50 4T 101 Octane variator lock - IP15340
EGR SLS GY6 50 139QMB 101 Octane - BT15475
GY6 139QMB oil pump on shaft 22 zeb 101 Octane - BT14782
Oil drain plug M12x1.5 with magnet - 229864

£7.54

delivery 0 £

Oil drain plug M12x1.5 with magnet - 229864

stars    (1)
Complete cylinder 80 cm3 GY6 139QMB 101 Octane - BT27365
Nut M12x1.25 - 165013

£1.14

delivery 0 £

Nut M12x1.25 - 165013

Transmission gasket 101 Octane - BT14010

£2.91

delivery 0 £

Transmission gasket 101 Octane - BT14010

stars    (2)
GY6 139QMB 101 Octane camshaft bridge - BT13854
Engine mount 139QMB 101 Octane - BT33012

£16.01

delivery 0 £

Engine mount 139QMB 101 Octane - BT33012

stars    (1)
Foot starter gear 139QMB 101 Octane - BT14430 Foot starter gear 139QMB 101 Octane - BT14430
Foot starter mode 101 Octane - BT24486 Foot starter mode 101 Octane - BT24486
Timing chain 139 QMB 101 Octane - BT40009

£3.81

delivery 0 £

Timing chain 139 QMB 101 Octane - BT40009

stars    (1)
GY6 4T 16t crankshaft - 56978 GY6 4T 16t crankshaft - 56978

£17.94

delivery 0 £

GY6 4T 16t crankshaft - 56978

stars    (28)
Clutch cover gasket 101 Octane - BT14732
Set of gaskets 101 Octane - BT13853

£4.84

delivery 0 £

Set of gaskets 101 Octane - BT13853

stars    (1)
Foot starter shaft 101 Octane - BT12001
Foot starter lever 101 Octane - BT12007

£5.84

delivery 0 £

Foot starter lever 101 Octane - BT12007

stars    (1)
Fan cover 139 QMB 101 Octane - BT13878 Fan cover 139 QMB 101 Octane - BT13878
Set of engine seals 139 QMB - BT17304

£3.17

delivery 0 £

Set of engine seals 139 QMB - BT17304

stars    (4)
Cylinder gasket 139 QMB 101 Octane - BT60002

£2.61

delivery 0 £

Cylinder gasket 139 QMB 101 Octane - BT60002

stars    (1)
Head gasket 139 QMB 101 Octane - BT20019

£3.10

delivery 0 £

Head gasket 139 QMB 101 Octane - BT20019

stars    (1)

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Products reviews

2025-09-08, 07:35

poland

Samu

Engine mount 139QMB 101 Octane

High quality and affordable. Fast delivery. Marginal measurement error in width, at least for the Znen qt model, but still managed to fit in place and works as expected.

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2019-01-09, 11:01

poland

Monika

Bushing for bendix in 4T 101 Octane drive belt cover

Bushing for bendix in 4t drive belt cover very good quality materials fits without any problem recommend to everyone

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2019-01-08, 12:06

poland

Monika

GY6 4T 16t crankshaft

Crankshaft Gg6 4t very good class shaft very strong suitable for strong cylinders 90cm I recommend to all

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2019-01-03, 18:36

poland

TNT147

GY6 4T 16t crankshaft

The crankshaft aesthetically packaged in a cardboard box and styrofoam extrusion arrived with no signs of damage.

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2020-03-27, 22:54

poland

Adrian

GY6 4T 16t crankshaft

I purchased this shaft for 2008 quest q7 Racing scooter, in my opinion it is really worth making a purchase of this shaft, because the installation went completely without any problems, everything fit perfectly and the most important thing is that the scooter has already done a lot of km on this shaft and does not show any problems, everything runs great simply, I recommend

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2017-04-05, 07:34

poland

Mateusz

GY6 4T 16t crankshaft

I have a Coliber Classic scooter and I ordered this part because my crankshaft that was already in it was byj.w. "wreckage" fortunately I found this site where I ordered a cheap and very good quality product with very fast delivery I really recommend this crankshaft

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2023-07-01, 10:03

poland

Maksym

GY6 4T 16t crankshaft

Good morning! The crankshaft works, But on the outside the threads and splines are not of very high quality. When buying, pay attention to the star of the oil pump - they can be different. I did not know this and had to squeeze from the old crankshaft

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2024-09-20, 06:30

poland

Alexandros

Oil drain plug M12x1.5 with magnet

Good morning, I was looking everywhere for this particular replacement, but I only found it in this store. I am very happy with the quality of the product in relation to the price. It's worth it and more.

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2016-09-12, 09:50

poland

Arkadiusz

GY6 4T 16t crankshaft

Review photo in the auction. Replacement packaging. The shoddy appearance of the connecting rod. Cutter and thread had damage. Plates on the counterweights crushed in an inaccurate way. The quality of the bearings will turn out in 5000km.

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2017-12-23, 16:42

poland

Przemysław

GY6 4T 16t crankshaft

The shaft to the "eye" as any other from allegro , BUT note - this is another shaft for a scooter from this seller that I bought,the previous one has already 22-thousand and still works perfectly, the current one 1500km and is ok.

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2021-12-22, 15:07

poland

Bernard

GY6 139QMB 101 Octane camshaft bridge

Motobi Huzar 4T 50cc. The product is solidly made. It is not a cheap Chinese product. Precise dimensions contribute to fast and trouble-free installation and operation.

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2025-11-15, 00:40

poland

bailleux

GY6 4T 16t crankshaft

Good quality crankshaft for the price. Really inexpensive, well packaged and fast, efficient delivery. Would recommend to anyone.

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2016-03-06, 14:29

poland

GrzegorzWesołowski

GY6 4T 16t crankshaft

Romet 717 4t 2008 Surprised positively TPI brand bearings. My suggestion: describe it what kind of bearings it has and give a picture on the connecting rod

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Gmoto's reply Thank you for sharing your idea with us. We will look into improving the description and add a photo of the connecting rod.
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Reliable opinion

2021-03-07, 10:21

poland

Przemysław

GY6 4T 16t crankshaft

Good quality and durability in the engine tuned very checks its properties, I own a scooter Moto Ventus Prymus 2

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2020-01-04, 18:45

poland

Sebastian

GY6 4T 16t crankshaft

Everything at the highest level packaging dimensions price to quality materials revelation cheaper will not buy anywhere greetings

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2020-05-19, 23:45

poland

Adam

GY6 4T 16t crankshaft

vaneti Atos 2012 capacity 50 ccm product quality and material is very good, it runs without any complaints and the installation is very fast.

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2019-11-25, 07:25

poland

Julian

GY6 4T 16t crankshaft

All ok good quality fast shipping fitted to 80 cc scooter . Product ok looks decent is not crap

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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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We have Motorcycle engine - parts to Flex Tech Thunder 25 4T