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Motorcycle engine - parts
RMMotor PY 50 4T - Page 3

Manufacturer

Price

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Found: 167
Camshaft pulley 4T 154FMI - 59044 Camshaft pulley 4T 154FMI - 59044
Starter shaft 4T 139FMB set - 59011 Starter shaft 4T 139FMB set - 59011
Front sprocket cover - 58959 Front sprocket cover - 58959
Rocker arms set 4T 139FMB 154FMI - 59035 Rocker arms set 4T 139FMB 154FMI - 59035
Cylinder 50cc 139FMB 4T - 59031 Cylinder 50cc 139FMB 4T - 59031
4T 154FMI clutch disc wheel - 58912 4T 154FMI clutch disc wheel - 58912
Camshaft 4T 139FMB - 59008 Camshaft 4T 139FMB - 59008

€9.21

Camshaft 4T 139FMB - 59008

stars    (7)
139FMB Oil Pump Drive Pulley - 58910 139FMB Oil Pump Drive Pulley - 58910
4T oil pump drive shaft - 59009
Cylinder 60cc 139FMB 4T - 59032
Clutch disc 4T 139FMB set - 58990
Kick starter lever 4T 139FMB - 58901 Kick starter lever 4T 139FMB - 58901
Oil dipstick 4T 139FMB 154FMI - 58936 Oil dipstick 4T 139FMB 154FMI - 58936
Oil drain plug 4T 139FMB 154FMI - 58920 Oil drain plug 4T 139FMB 154FMI - 58920
Timing chain 82 links 4T 139FMB - 58932 Timing chain 82 links 4T 139FMB - 58932
-5%
Athena sealer 11.6x24x10 mm - M730900244500Athena sealer 11.6x24x10 mm - M730900244500

€2.44

Lowest price from 30 days before discount:  €2.57

Athena sealer 11.6x24x10 mm - M730900244500

-5%
Athena sealer 10x21x4 mm - M730000287000Athena sealer 10x21x4 mm - M730000287000

€3.12

Lowest price from 30 days before discount:  €3.28

Athena sealer 10x21x4 mm - M730000287000

stars    (1)
Valves 110cc BTS engine
Engine 139FMB 4T 70cc 4-speed horizontal manual Engine 139FMB 4T 70cc 4-speed horizontal manual Options +2

€262.80

delivery 0 €

Engine 139FMB 4T 70cc 4-speed horizontal manual

stars    (7)

pojemność:

BTS horizontal 152FMH 110cm3 4T 4-speed manual silver engine BTS horizontal 152FMH 110cm3 4T 4-speed manual silver engine

Browse by manufacturer

Products reviews

2020-09-07, 09:01

poland

Krystian

Timing chain for junk, of course, as for me a very good quality I compared with another chain purchased and the bending of the chain is greater evidenced by a different metal alloy which will cause stretching faster at a later time

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2024-09-27, 21:24

poland

Paweł

Fast delivery, very well packaged and complete in 4 words everything you need is. The company (site) wholeheartedly recommend and noti once again I will stop by and buy because it is good and specific

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2020-08-10, 13:44

poland

Kacper

The stopper is well made. Quality at a high level. Very well coated with chrome, does not come off and is very aesthetically pleasing. Holds firmly in place. I recommend this store to all motorcyclists.

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2021-01-03, 14:25

poland

Filip

The kicker fits very well at the Loncin 125 139FMB engine and does not jump on the polygon. Very easy to install and remove. The quality is very good. I recommend

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2019-01-08, 14:09

poland

Monika

Timing chain guide roller 4t 139 fmb very good quality recommend to everyone fits without any problem

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2019-05-20, 10:41

poland

Michał

Fits a Romet ogar 125 motorcycle and fits 1:1 in the original. After inserting the levers my romet has a lot of power

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2025-03-31, 15:37

poland

Tajaddin

The 50 cm³ cylinder for the 139FMB 4-stroke engine is an excellent choice for anyone looking for a reliable and durable replacement or upgrade for their engine. The workmanship is precise and the fit is perfect - installation went smoothly. After installation, the engine runs perfectly again, with smooth running and good performance. The cooling fins ensure efficient heat dissipation, which increases durability. A particularly positive feature is the high-quality material, which promises a long service life. All in all, a top product with a great price-performance ratio! A clear purchase recommendation for anyone who wants to get their 139FMB engine back in top form. ⭐⭐⭐⭐⭐

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2025-04-20, 11:14

poland

Adrian Rene

Product arrived quickly and in full with fast processing and no complications. The price is fair and also very good value for the good quality. Shipping costs are also not as high as with other suppliers. As stated, the parts fit perfectly for my Romet Router WS 50 with four-stroke. I have installed everything new and everything is running great, just as I had hoped. I always order spare parts for my moped here and have never been disappointed.

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2022-02-28, 20:47

poland

Przemysław

Hi, I have an atypical moped sachs madass with 139fmb engine ordered a set of cylinder + head 72 4T 139FMB the order itself with shipment went very smoothly, cylinder ok unfortunately the head was no longer 100% as it should be, mainly it's about the finish sharp edges with numerous flecks after treatment, in addition the casting probably from beer cans as for me the head itself is not worth anything better to put money and buy something better quality

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Gmoto's reply If the product does not meet your expectations, you can easily return it. To do so, fill out the form available at https://gmoto.com/returns.
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Reliable opinion

2024-02-14, 14:52

poland

Artur

The chain, after lubrication with oil-protection against rust and installation, has not caused the slightest problem. Since its purchase- that is, since the previous motorcycle season 2023- it has served without the slightest complaint. I am a person who rides daily- to high school, now and to work. Honestly? As if I had to recommend, for this price, the product as highly recommendable.

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2018-02-08, 20:26

poland

Rafał

I have a moped Router WS 50 , I recently purchased a 4T scythe shift shaft 139FMB . The product was very well and aesthetically packaged , as for the product : solid , no feeling that it will fall apart in your hands . Assembly was very easy and short . The product works very well , I have no problems with it . I recommend this product 100% .

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2016-03-08, 22:01

poland

Łukasz

i have a 2007 kingway 50 chopper timing chain is made of very good quality material and perfectly matched because some chains seem to also have these 82 links but they are different sizes than on this chain from the motorcycle and this chain has perfectly the same links as the old one I had in the engine really recommend !!!

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2021-04-14, 08:29

poland

Bartosz

I purchased the shaft for my Zipp Pro 50. For a long time in my motorcycle in 3rd gear it was very jerky. I decided that it might be to replace the cam shaft. And so I did I ordered it from gmoto.pl installing the gears go very smoothly without any complaints. To my eye the shaft is made of solid material. I recommend this product !

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2019-07-19, 13:06

poland

Paweł

I own a Chinese chopper 50 cm, all purchased parts fit perfectly. Despite the fact that I am not a mechanic the help of colleagues and Yotuba allowed me to carry out the overhaul of the box, Photos of the elements of the box with dimensions super thing, makes it easier to choose .I highly recommend and thank you for your service

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2018-12-19, 10:32

poland

Arkadiusz

The screamer shaft looks decent and there is nothing to complain about the quality of workmanship. There was a problem only during installation. It did not fit my engine (152FMH 110cc). Overall, I can recommend if someone is going to buy it for a 50cc or for replacing the chiefs, which I also did myself.

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2021-06-30, 11:55

poland

Patryk

Hi. I own a 2002 Zumico GR 200 motorcycle and I recently ordered just this oil level gauge and I am extremely pleased I am satisfied with the product easy to install does not leak oil oring holds well nicely and cleanly you can see the oil level. Regards. Patryk

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2021-06-08, 12:04

poland

Daniel

The plug fits Chinese 250 engines such as Bashan, loncin etc. the fit is very good as is the durability, previous plugs broke after some time and this one holds. I recommend the product, I could not get it in any automotive store and here it is.

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2020-05-24, 10:09

poland

Tomasz

Kingway fate 50ccm , goods very well made , easy assembly which took 2 minutes . Delivery on5+ . Ordered on Monday morning And on Tuesday already at my place . This is another purchase of mine from this store and once again I was not disappointed and will definitely still order .

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2020-07-31, 11:53

poland

Przemysław

Romet Ogar 202 capacity of 49 cubic cyntimeters , manufactured in 2017 . Purchased plug made of medium quality materials for a good price , no doubt a plus is the included washer which they did not have to look for separately .

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2019-02-18, 12:04

poland

Łukasz

Everything talks as it should, it took me three hours to put this kit on and on the road I recommend! I've been driving for a few days now, I've already driven 100 km and the power is zero oil burning and tp.Everything as described fits perfectly and goes even better!

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2021-04-18, 14:17

poland

Paweł

Hello some time ago I ordered the product for my Samson 4T 139FB . I am very satisfied with the product, the quality of the product is very solid and will serve for a long time of use. I recommend this product to all who have the same engine.

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2020-09-07, 09:04

poland

Krystian

There are hard and soft rollers, I personally prefer the soft one because the roller works in extreme conditions of temperature and oil hardens over time and can crack or there is a breakage of a part, therefore I choose the soft material

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2024-09-16, 09:33

poland

Volker

The engine is great, unfortunately I wanted a connection plan and a carburetor. Unfortunately, after several emails, I got no response at all. So the engine is great but the information is bad.

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2024-10-22, 09:42

poland

Patrick

Super shipping of parts. Goods received exactly on the specified date. Very satisfied. Always happy to return. Second part for the handle also arrived within the specified time frame. Really very fast for a shipment from abroad.

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2025-05-06, 05:01

poland

Ulrich

The quality makes a very good impression. The look and fit are the same as the original part I replaced with it. Shipping was very fast, everything I ordered was securely packed.

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2025-04-25, 14:26

poland

Bocquillon B

Good quality nickel, long-lasting. I recommend it. I tatolized 2690 km and it turns nickel no particular problem. Just alignment for slightly hard mounting, but nothing else to complain about.

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2018-05-13, 11:09

poland

Adrian

Hello, I own a 50cc torq motorcycle. The product I purchased is the front sprocket cover. In my opinion, the part came in almost perfect condition. I recommend products from gmoto.pl

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2017-10-20, 10:52

poland

Robert

Romet Router ws50 110cm 2013.Purchased clutch for 4t fmb engine turned out to be better than the original. The clutch bounces harder and takes a lot faster.I am satisfied with the purchase and recommend.A successful purchase.

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2018-09-23, 09:30

poland

Konrad

Zippa Pro 50 ;) Good quality parts did not cause any problems during assembly. The whole process went quickly and smoothly. In addition, the chrome on the valve adjustment cap improves the aesthetics of the engine.

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2017-02-26, 18:24

poland

Michał

I own a motorcycle junak 901 capacity 72cc of 2014,I just needed this part and found it in your store,what can I add the part fits,good price fast delivery Greetings

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2024-05-02, 11:12

poland

Marcin

I have already driven 9000km on this clutch and nothing happens to it goes smoothly and wonderful as for this low price it is worth it mostly clutches lasted me max5000km.

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2025-09-01, 16:47

poland

tadeáš

I used these sealing rings on my jawa betka /kentoya twinshot on 139FMB engine and I can not complain about the engine does not leak any oil and the material is better than the original.

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2024-05-21, 05:09

poland

tobias

Oil drain plug 4t 139FMB product made of good materjał for sure will work for a long time order was completed in a very short time sincerely recommend it

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2024-09-26, 06:31

poland

Peter

Good engine, precise fit, easy to install The gearbox could be smoother or the clutch more precise But it runs a very good price performance ratio

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2019-07-08, 14:16

poland

Krystian

Zumico gr 500.The discs are made of very good material I have been riding on them for a week now and I am very happy that finally my clutch is going very quietly. I definitely recommend!!!

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2021-07-27, 21:43

poland

Kamil

The kickstand fits the Junak 902 model, it is sturdy and does the job, but the clamp is slightly too large by which we are not quite able to tighten it

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2020-05-02, 23:03

poland

Michał

perform their function well, they fit well together , and lie well in the pupil, do not slip during installation like some which is very annoying at times

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2018-09-22, 15:06

poland

Paweł

I have a moped benzer yankee 50 cm purchased cover plug left top is well made aesthetically enhances its value and the installation went very quickly and efficiently

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2024-12-18, 06:01

poland

Peter

After ordering, the parts arrived within 3 days. I didn't notice any problems during installation and my moped has been running perfectly ever since.

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2025-04-16, 06:07

poland

Wolfgang

Everything is great, the engine fits and runs well, and it started up really well. greetings to the team! Keep up the good work, I'll be checking this app more often now.

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