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Old 07-23-2014, 10:38 AM   #1
dwint51   dwint51 is offline
 
Join Date: Mar 2013
Location: murphy n.c
Posts: 467
bbk ebay

there are hundreds of these kits with lots of different prices.which ones are good and which ones to stay away from



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Old 07-26-2014, 10:27 PM   #2
chase50   chase50 is offline
 
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Join Date: Aug 2013
Location: CANADA
Posts: 5
I bought a 47mm bbk off ebay from scrappydog last year and I can't say anything bad about it. I've put over 600 miles (1000 km) on it with no problems. I also upgraded my carb and airfilter at the same time. I can't speak for other kits but scrappy's is working well for me.
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'09 Chase 50
47mm BBK kit
Stock head
Stock Variator
6.5g Sliders
Gates belt 729-17.5-30
K&N Style Cone Air Filter
18mm Keihin carburetor
#88 main jet
#35 idle
43 mph gps no wind
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Old 07-28-2014, 10:09 AM   #3
dwint51   dwint51 is offline
 
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Location: murphy n.c
Posts: 467
okay thanks



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Old 07-29-2014, 06:19 AM   #4
blueboy5000   blueboy5000 is offline
 
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Join Date: Jul 2011
Location: Connecticut
Posts: 493
Dwint, a BBK is not going to give you the performance gains you imagine it will.
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2011 Roketa MC-23-150

4T 150cc 157 qmj

24mm carb w 115 main jet and paper cone air filter

Manual petcock w Tygon fuel lines

Scrappy Dog Scooters Retro-slash stainless straight-thru exhaust

RED spring clutch

Adjustable CDI (brand unknown, it's blue and red and works great!)

KOSO high performance variator w 12g sliders

Gates Powerlink 835-20-30 belt

GPS verified 65mph on flats.
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Old 08-01-2014, 06:04 PM   #5
mmsscooters   mmsscooters is offline
 
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Join Date: Feb 2014
Location: las vegas
Posts: 100
Some kits are bad quality pistons, the piston is actually hard to push through the cylinder, scrappy dog, and my kits are good quality, it took us a lot of trial and error to find them
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2012 Jonway X
44mm Hoca crank
52mm Hoca big bore
MMS big valve head raised ports, polished, milled .023
Hoca 26mm carb
NCY titanium valve springs
NOS wet nitrous system
Holley fuel pump
MMS variator
Naraku CDI
HT coil
4' Wheelie bar
MMG stainless slip-on exhaust
NGK "11" spark plug
UNI filter

2014 Icebear Maddog
too much to list
http://mmsscooters.com



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Old 08-02-2014, 03:42 PM   #6
dwint51   dwint51 is offline
 
Join Date: Mar 2013
Location: murphy n.c
Posts: 467
thanks
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