Performance Parts that fit the Buddy
Moderator: Modern Buddy Staff
- Kaos
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Performance Parts that fit the Buddy
Ok, since people have been asking, I'm creating a thread for performance parts for the Buddy. submit other parts and I'll update the list(Note: This is not my full list. I'll add more to it shortly):
BEWARE: MANY OF THESE PARTS CAN ONLY BE ORDERED OUT OF TAIWAN.
PARTS THAT ARE CONFIRMED WORKING
<b>Transmission parts:</b>
Dr Pulley Variator
NCY Variator
Dr Pulley Sliding Variator weights
Prima Rolling Variator weights
Koso Clutch Springs
Koso Contra Springs
Prodigy 2-way adjustable Torque Driver
Koso Performance Clutch set
Dr Pulley Performance Clutch Set
NCY Clutch Bell
Gates Powerlink Kevlar Belt (PL30707)
<b>Engine Parts:</b>
Hi-Cam A8 Camshaft
Hi-Cam A9/A10/A11/A12(Needs Gear swap for the 125's)
Prima Exhaust Pipe
Yoshimura Exhaust(With a lot of modification!)
GY6 Performance Valve springs(Generic)
GY6 Performance Dual Valve springs(KSPowersports)
GY6 15mm Piston Pin Cylinder kits(150cc motors only)
Akunar 15mm pin GY6 PRO-R High Compression Piston(150cc motors only)
Mikuni 24mm CVK Carburetors(with stock intake)
Mikuni 30mm CVK Carburetors(With aftermarket intake)
OKO Flat-Slide carburetors(With aftermarket intake)
GY6 Generic intakes.
Bando Coil
KCHONG 406 CDI
Prima 161cc kit(125cc only)
Prima 183cc kit(125 and 150)
<b>Suspension/Body parts:</b>
NCY Forks
NCY Front Disk
NCY Front Caliper
NCY Adjustable Rear Shock
<b>other:</b>
Sylvania Silverstar H4 / 9003 headlight
PARTS THAT WILL LIKELY WORK
<b>Transmission parts:</b>
NCY Rear Pulley
<b>Engine Parts:</b>
Akunar 13mm pin PRO-R Pistons(125cc motors only, unsure of skirt height)
NCY Exhaust
NCY Camshafts
Generic GY6 exhausts.
JiangWayne 155cc cylinder kit(125cc only)
<b>Suspension/Body parts:</b>
<b>other:</b>
PARTS THAT DO NOT WORK
<b>Transmission parts:</b>
<b>Engine Parts:</b>
Anything for a *VERTICAL* GY6
<b>Suspension/Body parts:</b>
Generic GY6 rear shock(wrong height)
<b>other:</b>
BEWARE: MANY OF THESE PARTS CAN ONLY BE ORDERED OUT OF TAIWAN.
PARTS THAT ARE CONFIRMED WORKING
<b>Transmission parts:</b>
Dr Pulley Variator
NCY Variator
Dr Pulley Sliding Variator weights
Prima Rolling Variator weights
Koso Clutch Springs
Koso Contra Springs
Prodigy 2-way adjustable Torque Driver
Koso Performance Clutch set
Dr Pulley Performance Clutch Set
NCY Clutch Bell
Gates Powerlink Kevlar Belt (PL30707)
<b>Engine Parts:</b>
Hi-Cam A8 Camshaft
Hi-Cam A9/A10/A11/A12(Needs Gear swap for the 125's)
Prima Exhaust Pipe
Yoshimura Exhaust(With a lot of modification!)
GY6 Performance Valve springs(Generic)
GY6 Performance Dual Valve springs(KSPowersports)
GY6 15mm Piston Pin Cylinder kits(150cc motors only)
Akunar 15mm pin GY6 PRO-R High Compression Piston(150cc motors only)
Mikuni 24mm CVK Carburetors(with stock intake)
Mikuni 30mm CVK Carburetors(With aftermarket intake)
OKO Flat-Slide carburetors(With aftermarket intake)
GY6 Generic intakes.
Bando Coil
KCHONG 406 CDI
Prima 161cc kit(125cc only)
Prima 183cc kit(125 and 150)
<b>Suspension/Body parts:</b>
NCY Forks
NCY Front Disk
NCY Front Caliper
NCY Adjustable Rear Shock
<b>other:</b>
Sylvania Silverstar H4 / 9003 headlight
PARTS THAT WILL LIKELY WORK
<b>Transmission parts:</b>
NCY Rear Pulley
<b>Engine Parts:</b>
Akunar 13mm pin PRO-R Pistons(125cc motors only, unsure of skirt height)
NCY Exhaust
NCY Camshafts
Generic GY6 exhausts.
JiangWayne 155cc cylinder kit(125cc only)
<b>Suspension/Body parts:</b>
<b>other:</b>
PARTS THAT DO NOT WORK
<b>Transmission parts:</b>
<b>Engine Parts:</b>
Anything for a *VERTICAL* GY6
<b>Suspension/Body parts:</b>
Generic GY6 rear shock(wrong height)
<b>other:</b>
Last edited by Kaos on Fri May 29, 2009 1:30 pm, edited 3 times in total.
- ericalm
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Awesome list! I will add this to our in-development new FAQ and will move it to the Tech Library after response & discussion here.
Thanks for putting this together.
Thanks for putting this together.
Eric // LA Scooter Meetup Group // Stella 4T // Vespa LX // Vespa LXS // Honda Helix // some, uh, projects…
- ericalm
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Re: Performance Parts that fit the Buddy
Just out of curiosity, are these confirmed because people with BuBus in Asia have installed them? I don't think anyone here has, but if they have, I'd be curious to know how the parts are working out.Kaos wrote: GY6 15mm Piston Pin Cylinder kits(150cc motors only)
Akunar 15mm pin GY6 PRO-R High Compression Piston(150cc motors only)
Mikuni 24mm CVK Carburetors(with stock intake)
Mikuni 30mm CVK Carburetors(With aftermarket intake)
OKO Flat-Slide carburetors(With aftermarket intake)
GY6 Generic intakes.
Have you been haunting the Taiwanese forums?

And, just an aside to everyone: The surest way to shorten the lifespan of your scooter (without crashing it) is to install these kinds of mods. That's not to say I'm anti-modification—my Vespa has a cylinder kit, MultiVar and performance exhaust—but you'll be sacrificing a lot in reliability in exchange for performance. Also, like celebs and plastic surgery, once you start you hop onto an escalator if adding more and more to get the most out of whatever you just installed.
My point is, be sure you know what you're getting into and the possible outcome. I've already heard several stories of trashed engines due to installation of questionable Taiwanese performance parts and riding the scooter faster than it's built for longer than it should be run. If that happens to you, your warranty isn't going to cover it.
On the other hand, if you love to tinker, want the fastest Buddy out there, and have another scooter as backup (

Last edited by ericalm on Sun Mar 01, 2009 4:10 pm, edited 1 time in total.
Eric // LA Scooter Meetup Group // Stella 4T // Vespa LX // Vespa LXS // Honda Helix // some, uh, projects…
- Kaos
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- Location: Portland, OR
Re: Performance Parts that fit the Buddy
Heh, I've been haunting Taiwanese forums(With the help of Google translator) and talking to anyone and everyone with a Bubu, PGO Metro, or Modenas Ceria(All the Buddy incase you didn't know that)ericalm wrote:Just out of curiosity, are these confirmed because people with BuBus in Asia have installed them? I don't think anyone here has, but if t hey have, I'd be curious to know how the parts are working out.Kaos wrote: GY6 15mm Piston Pin Cylinder kits(150cc motors only)
Akunar 15mm pin GY6 PRO-R High Compression Piston(150cc motors only)
Mikuni 24mm CVK Carburetors(with stock intake)
Mikuni 30mm CVK Carburetors(With aftermarket intake)
OKO Flat-Slide carburetors(With aftermarket intake)
GY6 Generic intakes.
Have you been haunting the Taiwanese forums?
And, just an aside to everyone: The surest way to shorten the lifespan of your scooter (without crashing it) is to install these kinds of mods. That's not to say I'm anti-modification—my Vespa has a cylinder kit, MultiVar and performance exhaust—but you'll be sacrificing a lot in reliability in exchange for performance. Also, like celebs and plastic surgery, once you start you hop onto an escalator if adding more and more to get the most out of whatever you just installed.
My point is, be sure you know what you're getting into and the possible outcome. I've already heard several stories of trashed engines due to installation of questionable Taiwanese performance parts and riding the scooter faster than it's built for longer than it should be run. If that happens to you, your warranty isn't going to cover it.
On the other hand, if you love to tinker, want the fastest Buddy out there, and have another scooter as backup (), do what you will.
As well as other PGO bikes with compatible parts. I've made several contacts in Taiwan that have been helping me source parts for my bike.
I'm inches from having a viable big-bore kit for the 125cc bikes, and the 150cc's can already be kitted.
I agree that modifications are a slippery slope, but its one I'm more than willing to travel

**EDIT AFTER RE-READING YOUR POST:
I confirmed the GY6 intake and the Mikuni 24mm carb myself by visual inspection and measurment when I was tearing down a friend's GY6-based China bike.
The Akunar pistion for the 150cc's was confirmed by Akunar to fit the 150 Bubu, and G-Max(Blur)
The other items on that list are confirmed installed by various people on Taiwanese bike forums on either the Bubu or the G-Max.
Last edited by Kaos on Sun Mar 01, 2009 5:25 am, edited 1 time in total.
- Lostmycage
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Re: Performance Parts that fit the Buddy
I'll add a little to this as well. (for 125 and 150)
Dr Pulley Variator: 181401
Dr Pulley slider weights: 18x14
For Koso, NCY and Prodigy etc Clutches and Variators:
Variators that are 115mm in size
Clutch Bells are 120mm (and the clutches that fit to this size bell/drum)
GY6 Camshafts - always verify size, there's some odd balls out there.
Bearing distance (outside to outside) is 58mm
Lifts
A8:??
A9: 26.84mm ex:26.93mm
A10:??
A11:??
A12:in:26.9mm ex:27.21mm
Belts: the 125 and the 150 use two different sized belts. A belt that fits a 125 will not fit the 150, just an FYI.
NCY Big Disk Brake kits DO NOT come with bolts. If you get these, make sure that you install grade 10 flanged bolts. I can't confirm the size, but on the Blur the needed bolt is M10x1.25x25mm. These are actually hard to find locally.
I don't know the intake valve size off hand, but I have seen that aftermarket "Big Valve" heads tend to come with 27mm intake valves. So a 30mm carb might be excessive. Then again, finding an intake that's machined and matched to the valve size isn't really possible, so go nuts with the carb.
Now, my own aside. Don't mod your Buddy if you're not willing to buy a new one. Even proven parts can fail, and I guarantee you that it won't be covered by warranty. You can and will trash your motor if you mess up when you start getting into the heavier stuff. Do your research ahead of time, figure out what works.... and still be ready to buy a new one. It's a risk.
However... if you do it right, keep the engine running with the proper air fuel ratio, use high quality lubricants, install a temperature gauge and monitor it, keep a tab on the fuel mixture by reading your plug and generally take precautions... the longevity of the bike shouldn't be shortened. If you do it right, the potential for the bike increases in that it works less to achieve the same momentum as it did before. In my mind that extends the life of the scooter.
Dr Pulley Variator: 181401
Dr Pulley slider weights: 18x14
For Koso, NCY and Prodigy etc Clutches and Variators:
Variators that are 115mm in size
Clutch Bells are 120mm (and the clutches that fit to this size bell/drum)
GY6 Camshafts - always verify size, there's some odd balls out there.
Bearing distance (outside to outside) is 58mm
Lifts
A8:??
A9: 26.84mm ex:26.93mm
A10:??
A11:??
A12:in:26.9mm ex:27.21mm
Belts: the 125 and the 150 use two different sized belts. A belt that fits a 125 will not fit the 150, just an FYI.
NCY Big Disk Brake kits DO NOT come with bolts. If you get these, make sure that you install grade 10 flanged bolts. I can't confirm the size, but on the Blur the needed bolt is M10x1.25x25mm. These are actually hard to find locally.
I don't know the intake valve size off hand, but I have seen that aftermarket "Big Valve" heads tend to come with 27mm intake valves. So a 30mm carb might be excessive. Then again, finding an intake that's machined and matched to the valve size isn't really possible, so go nuts with the carb.
Now, my own aside. Don't mod your Buddy if you're not willing to buy a new one. Even proven parts can fail, and I guarantee you that it won't be covered by warranty. You can and will trash your motor if you mess up when you start getting into the heavier stuff. Do your research ahead of time, figure out what works.... and still be ready to buy a new one. It's a risk.
However... if you do it right, keep the engine running with the proper air fuel ratio, use high quality lubricants, install a temperature gauge and monitor it, keep a tab on the fuel mixture by reading your plug and generally take precautions... the longevity of the bike shouldn't be shortened. If you do it right, the potential for the bike increases in that it works less to achieve the same momentum as it did before. In my mind that extends the life of the scooter.
Last edited by Lostmycage on Sun Mar 01, 2009 6:41 pm, edited 1 time in total.
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- loodieboy
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NCY Adjustable Rear Shock
Gates Powerlink Kevlar Belt (PL30707)
NCY Clutch & Contra Springs (for Vento 150) (at least working for me)
Also may be nice to add compatible light bulbs:
Sylvania Silverstar H4 / 9003
Edit: BTW, I don't know if this kit has been discussed before, and I sure don't know if it works, but I found it here midway down the page. It is listed as Bubu / Buddy 125 compatible.
Gates Powerlink Kevlar Belt (PL30707)
NCY Clutch & Contra Springs (for Vento 150) (at least working for me)
Also may be nice to add compatible light bulbs:
Sylvania Silverstar H4 / 9003
Edit: BTW, I don't know if this kit has been discussed before, and I sure don't know if it works, but I found it here midway down the page. It is listed as Bubu / Buddy 125 compatible.
Clearly.
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- black sunshine
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- Kaos
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- Location: Portland, OR
Ohh, I've not seen that kit before, but I'll add it to the list!loodieboy wrote:NCY Adjustable Rear Shock
Gates Powerlink Kevlar Belt (PL30707)
NCY Clutch & Contra Springs (for Vento 150) (at least working for me)
Also may be nice to add compatible light bulbs:
Sylvania Silverstar H4 / 9003
Edit: BTW, I don't know if this kit has been discussed before, and I sure don't know if it works, but I found it here midway down the page. It is listed as Bubu / Buddy 125 compatible.
Vento 150's are GY6's. The parts work fine.
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- bikebuda
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Re: Performance Parts that fit the Buddy
Kaos wrote:Ok, since people have been asking, I'm creating a thread for performance parts for the Buddy. submit other parts and I'll update the list(Note: This is not my full list. I'll add more to it shortly):
BEWARE: MANY OF THESE PARTS CAN ONLY BE ORDERED OUT OF TAIWAN.
PARTS THAT ARE CONFIRMED WORKING
<b>Transmission parts:</b>
Dr Pulley Variator
NCY Variator
Dr Pulley Sliding Variator weights
Prima Rolling Variator weights
Koso Clutch Springs
Koso Contra Springs
Prodigy 2-way adjustable Torque Driver
Koso Performance Clutch set
Dr Pulley Performance Clutch Set
NCY Clutch Bell
Gates Powerlink Kevlar Belt (PL30707)
<b>Engine Parts:</b>
Hi-Cam A8 Camshaft
Prima Exhaust Pipe
Yoshimura Exhaust(With a lot of modification!)
GY6 Performance Valve springs(Generic)
GY6 15mm Piston Pin Cylinder kits(150cc motors only)
Akunar 15mm pin GY6 PRO-R High Compression Piston(150cc motors only)
Mikuni 24mm CVK Carburetors(with stock intake)
Mikuni 30mm CVK Carburetors(With aftermarket intake)
OKO Flat-Slide carburetors(With aftermarket intake)
GY6 Generic intakes.
JiangWayne 155cc cylinder kit(125cc only)
<b>Suspension/Body parts:</b>
NCY Forks
NCY Front Disk
NCY Front Caliper
NCY Adjustable Rear Shock
<b>other:</b>
Sylvania Silverstar H4 / 9003 headlight
PARTS THAT WILL LIKELY WORK
<b>Transmission parts:</b>
NCY Rear Pulley
<b>Engine Parts:</b>
Hi-Cam A9/A10/A11/A12
Akunar 13mm pin PRO-R Pistons(125cc motors only, unsure of skirt height)
NCY Exhaust
NCY Camshafts
Generic GY6 exhausts.
<b>Suspension/Body parts:</b>
<b>other:</b>
PARTS THAT DO NOT WORK
<b>Transmission parts:</b>
<b>Engine Parts:</b>
Anything for a *VERTICAL* GY6
<b>Suspension/Body parts:</b>
Generic GY6 rear shock(wrong height)
<b>other:</b>
question your A8 cam went in with no modifications?
- Kaos
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Re: Performance Parts that fit the Buddy
Yep, it installed with no mods at all, bolt in.bikebuda wrote:Kaos wrote:Ok, since people have been asking, I'm creating a thread for performance parts for the Buddy. submit other parts and I'll update the list(Note: This is not my full list. I'll add more to it shortly):
BEWARE: MANY OF THESE PARTS CAN ONLY BE ORDERED OUT OF TAIWAN.
PARTS THAT ARE CONFIRMED WORKING
<b>Transmission parts:</b>
Dr Pulley Variator
NCY Variator
Dr Pulley Sliding Variator weights
Prima Rolling Variator weights
Koso Clutch Springs
Koso Contra Springs
Prodigy 2-way adjustable Torque Driver
Koso Performance Clutch set
Dr Pulley Performance Clutch Set
NCY Clutch Bell
Gates Powerlink Kevlar Belt (PL30707)
<b>Engine Parts:</b>
Hi-Cam A8 Camshaft
Prima Exhaust Pipe
Yoshimura Exhaust(With a lot of modification!)
GY6 Performance Valve springs(Generic)
GY6 15mm Piston Pin Cylinder kits(150cc motors only)
Akunar 15mm pin GY6 PRO-R High Compression Piston(150cc motors only)
Mikuni 24mm CVK Carburetors(with stock intake)
Mikuni 30mm CVK Carburetors(With aftermarket intake)
OKO Flat-Slide carburetors(With aftermarket intake)
GY6 Generic intakes.
JiangWayne 155cc cylinder kit(125cc only)
<b>Suspension/Body parts:</b>
NCY Forks
NCY Front Disk
NCY Front Caliper
NCY Adjustable Rear Shock
<b>other:</b>
Sylvania Silverstar H4 / 9003 headlight
PARTS THAT WILL LIKELY WORK
<b>Transmission parts:</b>
NCY Rear Pulley
<b>Engine Parts:</b>
Hi-Cam A9/A10/A11/A12
Akunar 13mm pin PRO-R Pistons(125cc motors only, unsure of skirt height)
NCY Exhaust
NCY Camshafts
Generic GY6 exhausts.
<b>Suspension/Body parts:</b>
<b>other:</b>
PARTS THAT DO NOT WORK
<b>Transmission parts:</b>
<b>Engine Parts:</b>
Anything for a *VERTICAL* GY6
<b>Suspension/Body parts:</b>
Generic GY6 rear shock(wrong height)
<b>other:</b>
question your A8 cam went in with no modifications?
- Kaos
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- Location: Portland, OR
You find someone in Taiwan who speaks decent english, and is willing to ship?ZQ8 Blazer wrote:So how do you order parts from Taiwan?
How about cold air intakes for the 125?
Autotech355 (Carlos) on eBay is a good place to get most things.
The idea behind a cold air intake really will not work on the Buddy, and really only has minimal effects on a car.
The body of the Buddy would only allow you to get about 8 inches of intake pipe max before you are sticking out the side of the bike, the air 8 inches from the motor is not going to be noticably cooler than the air right at the carburetor.
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- bikebuda
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- Kaos
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- Location: Portland, OR
No, the cam I purchased was 32 tooth.bikebuda wrote:so the A8 cam went rite in with no mods
even though buddy 125 uses a 32 tooth cam sprocket while all the others use a 34 tooth you didnt have to press on and off the original sprocket ?
all performance cams i have found for sale were 34 tooth
buddy 125 16/32
buddy 150 17/34
all GY6 17/32
There are actually 4 different variants of GY6 motors(Actually arguably 5, but I won't get into that)
The cams for the 152QMI and 157QMJ are the ones that fit if I remember right.
I seem to remember mine was for the 152QMI.
The 125cc motor is actually a hybrid between the 152QMI and 157QMJ,
so it can be tricky figuring out which part you want.
- bikebuda
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- Kaos
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- Location: Portland, OR
Ohh, I hadn't thought of indexing like that. I installed mine a couple of teeth off, to where its about 3 degrees advanced, but it was hard to get it at exactly 3 degrees. I confess I didn't really think about just moving the sprocketbikebuda wrote:i have tried several places no ones knows what i am talking about with the 32 tooth sprocket , all anyone has is 34 tooth
it is pretty easy to press off the stock gear and put it on any performance cam you want ,not to mention you can index the cam where you want it this way

- djelliott
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I'd like to add UNI filter (42mm I believe, of course they are a bit adjustable) to the list. It should be mentioned that some minor modification to the stock intake snorkel and proper jetting are needed. Oh, and the contra spring I used was NCY 1000RPM.Kaos wrote:Ohh, I hadn't thought of indexing like that. I installed mine a couple of teeth off, to where its about 3 degrees advanced, but it was hard to get it at exactly 3 degrees. I confess I didn't really think about just moving the sprocketbikebuda wrote:i have tried several places no ones knows what i am talking about with the 32 tooth sprocket , all anyone has is 34 tooth
it is pretty easy to press off the stock gear and put it on any performance cam you want ,not to mention you can index the cam where you want it this way
Dustin
Prima pipe
UNI filter
125 Main Jet
2000RPM Stall Spring
1500RPM Clutch Springs
Dr. Pulley Variator with 11 Gram Sliders
NCY Front Forks
Prima/NCY 161cc Big Bore kit With 150 Head
KS Power GY6 Performance Springs
NCY Secondary Shieve
UNI filter
125 Main Jet
2000RPM Stall Spring
1500RPM Clutch Springs
Dr. Pulley Variator with 11 Gram Sliders
NCY Front Forks
Prima/NCY 161cc Big Bore kit With 150 Head
KS Power GY6 Performance Springs
NCY Secondary Shieve