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 Zuma 50f four stroke big bore kits, mods and results 
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Scooterologist

Joined: Sun May 27, 2018 11:18 pm
Posts: 35
Location: Massachusetts
scooters and mods: 2013 Honda PCX 150 (RIP) and 2015 Yamaha Zuma 50F and 2014 Honda Forza 300
Post Zuma 50f four stroke big bore kits, mods and results
Newbie here. Recently bought a 2015 zuma 50f and wanted to know the results of other users who have upgraded their 4 stroke zumas. I already removed the restrictor washer and went from 34 mph gps to 41 mph gps on flats and 43.4 mph downhill but the rev limiter always kicks in.
I’m planing on buying the Polini 66cc bbk or a 60cc bbk on eBay for $90
I’m getting malossi 13/44 up gears, Polini air filter, malossi racing belt and dr pulley 5g sliders.
Not sure what big bore kit to go with. I’d appreciate feedback from fellow 4 stroke zuma owners. Thank you

_________________
2015 Titan Grey Yamaha Zuma 50F w/ dual headlight mod, restrictor washer behind variator, Michelin Reggea tires, Polini 66cc BBK, Polini Air Filter, Polini Variator, 6.9g Rollers, Malossi 13/44 Gears, Malossi White Contra Spring, Koso 1000 RPM Clutch Springs
2013 Red Honda PCX 150 - Stock (Crashed into a deer August 2018 :( RIP)
2014 Red Honda Forza 300 - Stock


Sun May 27, 2018 11:26 pm
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Scooterologist

Joined: Sun May 27, 2018 11:18 pm
Posts: 35
Location: Massachusetts
scooters and mods: 2013 Honda PCX 150 (RIP) and 2015 Yamaha Zuma 50F and 2014 Honda Forza 300
Post Re: Zuma 50f four stroke big bore kits, mods and results
I went ahead and put a big bore kit in my Zuma 4T.
Here’s a video of my progress. Before and after the big bore kit:
https://youtu.be/6-RxK0B7cqQ

And here’s a shortened version of the same video with a side by side comparison of before and after:
https://youtu.be/ampa194MAls

_________________
2015 Titan Grey Yamaha Zuma 50F w/ dual headlight mod, restrictor washer behind variator, Michelin Reggea tires, Polini 66cc BBK, Polini Air Filter, Polini Variator, 6.9g Rollers, Malossi 13/44 Gears, Malossi White Contra Spring, Koso 1000 RPM Clutch Springs
2013 Red Honda PCX 150 - Stock (Crashed into a deer August 2018 :( RIP)
2014 Red Honda Forza 300 - Stock


Sun Apr 14, 2019 2:32 pm
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Newb
Newb

Joined: Thu Feb 01, 2018 12:34 am
Posts: 17
Post Re: Zuma 50f four stroke big bore kits, mods and results
Burukkusu wrote:
I went ahead and put a big bore kit in my Zuma 4T.
Here’s a video of my progress. Before and after the big bore kit:
https://youtu.be/6-RxK0B7cqQ

And here’s a shortened version of the same video with a side by side comparison of before and after:
https://youtu.be/ampa194MAls

Looks like a fun and challenging project. Nice


Sun Apr 14, 2019 6:01 pm
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Scooterologist

Joined: Sun May 27, 2018 11:18 pm
Posts: 35
Location: Massachusetts
scooters and mods: 2013 Honda PCX 150 (RIP) and 2015 Yamaha Zuma 50F and 2014 Honda Forza 300
Post Re: Zuma 50f four stroke big bore kits, mods and results
Ferdirk wrote:
Burukkusu wrote:
I went ahead and put a big bore kit in my Zuma 4T.
Here’s a video of my progress. Before and after the big bore kit:
https://youtu.be/6-RxK0B7cqQ

And here’s a shortened version of the same video with a side by side comparison of before and after:
https://youtu.be/ampa194MAls

Looks like a fun and challenging project. Nice

Well not really lol. With how much I spent in parts and the Zuma itself I could have just got a Zuma 125 which I wanted to do but my GF doesn’t have a motorcycle license or permit so I was trying to make this go faster so she can keep up with me lol

_________________
2015 Titan Grey Yamaha Zuma 50F w/ dual headlight mod, restrictor washer behind variator, Michelin Reggea tires, Polini 66cc BBK, Polini Air Filter, Polini Variator, 6.9g Rollers, Malossi 13/44 Gears, Malossi White Contra Spring, Koso 1000 RPM Clutch Springs
2013 Red Honda PCX 150 - Stock (Crashed into a deer August 2018 :( RIP)
2014 Red Honda Forza 300 - Stock


Sun Apr 14, 2019 9:14 pm
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Newb
Newb

Joined: Thu Feb 01, 2018 12:34 am
Posts: 17
Post Re: Zuma 50f four stroke big bore kits, mods and results
Burukkusu wrote:
Ferdirk wrote:
Burukkusu wrote:
I went ahead and put a big bore kit in my Zuma 4T.
Here’s a video of my progress. Before and after the big bore kit:
https://youtu.be/6-RxK0B7cqQ

And here’s a shortened version of the same video with a side by side comparison of before and after:
https://youtu.be/ampa194MAls

Looks like a fun and challenging project. Nice

Well not really lol. With how much I spent in parts and the Zuma itself I could have just got a Zuma 125 which I wanted to do but my GF doesn’t have a motorcycle license or permit so I was trying to make this go faster so she can keep up with me lol

I see. It seems more practical in the future if your gf would acquire a license.


Mon Apr 15, 2019 6:51 pm
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Scooterologist

Joined: Sun May 27, 2018 11:18 pm
Posts: 35
Location: Massachusetts
scooters and mods: 2013 Honda PCX 150 (RIP) and 2015 Yamaha Zuma 50F and 2014 Honda Forza 300
Post Re: Zuma 50f four stroke big bore kits, mods and results
I see. It seems more practical in the future if your gf would acquire a license.[/quote]

She probably never will and who knows how long we’ll be together. We’re not on “future wedding” terms currently lol

_________________
2015 Titan Grey Yamaha Zuma 50F w/ dual headlight mod, restrictor washer behind variator, Michelin Reggea tires, Polini 66cc BBK, Polini Air Filter, Polini Variator, 6.9g Rollers, Malossi 13/44 Gears, Malossi White Contra Spring, Koso 1000 RPM Clutch Springs
2013 Red Honda PCX 150 - Stock (Crashed into a deer August 2018 :( RIP)
2014 Red Honda Forza 300 - Stock


Mon Apr 15, 2019 8:57 pm
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Newb
Newb

Joined: Thu Feb 01, 2018 12:34 am
Posts: 17
Post Re: Zuma 50f four stroke big bore kits, mods and results
Oh, that explains it.


Tue Apr 16, 2019 8:55 pm
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