Upgrading a Yamaha BWS 100 with a Malossi 125cc Big Bore Kit!

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#urbanriders #scootertuning #malossi #bigbore #yamaha #bws
Watch us install a Malossi 125cc Big Bore kit on this already modified Yamaha BWS 100 also known in other parts of the world as the MBK Booster 100.
If you are interested in the parts in this video, check them out on our website: urbanriders.odoo.com/
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Time Stamps:
00:00 Intro
00:08 About this Scooter
01:06 Cylinder Kit
02:33 Strip Down
02:58 Stock Cylinder
03:15 Spark Plug
03:40 Stock Cylinder Removal
06:11 Cylinder Comparison
07:53 Malossi Cylinder Assembly
09:44 Plug and Cap
10:00 Reed Valve
10:21 Cooling Hack
12:39 Rebuild
12:52 First Start
13:52 Outro

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Опубликовано:

7 июн 2024

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Комментарии : 44

@woppy71 7 месяцев назад

Great to see the SA guys representing!

@urban_riders 6 месяцев назад

Thank you! 🇿🇦 love to see the South African love out here

@h.auskoln5724 7 месяцев назад

Leovince is the brand of the ZX, greetings from Germany. 🤙

@urban_riders 7 месяцев назад

Ahh yes! We thought so.

@user-nf2pg9kj1b 6 месяцев назад

They stopped bringing Leo Vince into SA, several years ago, because the importer got tired of replacing cracked pipes under warranty.

@traystunna 3 месяца назад

Leo Vince makes that pipe

@DennisSpecial 5 месяцев назад

👍👍👍👍👍

@angelaquinn8310 Месяц назад

Thankyou for your bws vids 😊 How does stock crank hold up to the malossi 124 big bore kit?

@urban_riders Месяц назад

Thank you! There aren’t too many options for upgraded cranks, but we have not had any faults with the stock crank. It’s more common to burn a hole in the piston than for the crank to go 😂

@angelaquinn8310 Месяц назад

@@urban_riders I'm deciding which of the big bore kits would best suit my bws - running technigas silent pro, malossi mutivar... Biggest might be best? Malossi 124 v airsal 120 v naraku 113.... Have u tried the naraku?

@urban_riders Месяц назад

@@angelaquinn8310 We have used the Airsal kits a few times, and we have fitted a Naraku kit. For us the Malossi cylinder with the other Malossi parts was the best for power.

@angelaquinn8310 Месяц назад

@@urban_riders thankyou 😎 sounds like malossi is the right choice for me

@shaunclaassen5649 5 месяцев назад

Where did you buy the kit? Is there someone in South Africa that supplies Malossi kits and pipes

@urban_riders 5 месяцев назад

Have a look at our website urbanriders.odoo.com/

@jimccc9467 3 месяца назад

Can you tell me if it’s possible to fit a 100/125 kit to the 50cc cases? I’m wondering if it can be done? I know cases would need machined for cylinder but would crank fit? Is the rod big end pin same? Many many questions

@urban_riders 3 месяца назад

Unfortunately they do not fit at all. The casings are completely different, however a 70cc could give you just as much performance if done correctly.

@Adam-ot3oy 6 месяцев назад

Hi, for a stock bws 100 with only malossi variator and malossi red sponge should I change the main jet?

@urban_riders 6 месяцев назад

We normally don't recommend using aftermarket air filters on a stock engine. The stock filter and airbox work best. The rule-of-thumb for jetting aftermarket filter is to go up 10% on the main jet. Std jet is 72.5 so using the Aerox 76 main jet would be easier change. Jetting can become very tricky on a CVT engine so is best avoided.

@fathimejri6753 6 месяцев назад

Hello my friend, what is the transmission oil for the Yamaha BWS100

@urban_riders 6 месяцев назад

Hello! We use Malossi 75w-90 Gear Oil

@anilgucuyen4451 7 месяцев назад

I think you need stroker crankshaft and high pressure cylinder head (4VP head is old style and inefficient).. I used 50.1mm crankshaft with Malossi and Airsal 117cc full set...I think Airsal is better..

@urban_riders 6 месяцев назад

We plan on doing a full build soon 👀. With the Malossi barrel and machined head as well as the stroker crank! But the Airsal kit is also a really solid mod!

@wesselmeijer625 6 месяцев назад

Any experience using the malossi cylinder in combination with the airsal 117cc head? I'm building an aerox with this engine

@anilgucuyen4451 6 месяцев назад

@@wesselmeijer625 Airsal head volume is 11cc, original is 13cc! You can calculate a simple compression. My opinion is that you should make the circumferecence of airsal 57,7mm

@michaelsmith3017 Месяц назад

I heard these 100cc engines are not performing well and it’s worth to upgrade a 50cc to 70cc as I have , if it’s worth let us know so we can buy an engine and fit it to our frames as they are the same , thanks

@urban_riders Месяц назад

Yes, that is correct. The 50cc is much better for modifying as they have way more parts available. The frames should be the same and it is an easy swap. Unfortunately in South Africa we got very little 50cc scooters and the ones we did get don't accept all the same mods. You would have to be very specific with which engine to start with.

@woutervermaak9007 6 месяцев назад

are you leaving the exhaust port stock?

@urban_riders 6 месяцев назад

On this build yes, but if you’ve seen the “All Malossi Build” we did on Clayton’s black BWS we had done some porting to better match the exhaust and flow.

@fathimejri6753 6 месяцев назад

Hello, what spark plug is suitable for the bws100

@urban_riders 6 месяцев назад

The standard plug is BP7HS-10 but in the hot/warmer climates we suggest running the BP8HS-10 for a stock setup.

@laytonhedges7314 7 месяцев назад

Hey guys cool video. Does malossi design the cylinder with the original head in mind? Was wondering if it would be worth it, or even necessary, to redo the head to match the new bore? 🤔

@bonsaiG 7 месяцев назад

the malossi cylinder says to use the stock head, but the stock head isnt the best design. The airsal cylinder looks a lot better compared to the malossi one and it comes with a matching head

@urban_riders 6 месяцев назад

Malossi used to have a cylinder head but it it has since been discontinued. You can use the stock head but some people get them machined. I don’t think it’s worth the trouble if you aren’t trying to squeeze out every bit of power.

@urban_riders 6 месяцев назад

The Airsal kit is also a really solid kit!

@Postalguy1 Месяц назад

2 or 4 stroke?

@urban_riders Месяц назад

This is the 2-stroke 100cc YW100. We only received the 125cc 4-stroke BWS for one year and then Yamaha stopped importing them because it was too expensive for our market.

@lizettefiguerres-dm1sn 3 месяца назад

Hi is this fit to zuma 50cc

@urban_riders 3 месяца назад

Hi @lizettefiguerres-dm1sn This 125cc kit does Not fit the 50cc Minarelli motors. There are Malossi and Stage6 70cc big-bore kits available for your Zuma 50cc. What country are you, I can refer you to the best place to enquire?

@lizettefiguerres-dm1sn 3 месяца назад

@@urban_riders hi im from phillipine and i leave here in the US

@urban_riders 3 месяца назад

@@lizettefiguerres-dm1sn then I suggest scootertuning.ca for your parts. And also scooterswapshop.com ✌