Which BBK Is Right For Me?

[lykos23]

I've come a long way in attaining high speeds on my stock 63cc scooter, but it's about time for doing that popular thing that's equivalent to compiling your own linux kernel in the world of scoots; a BBK install.

I've been watching lots of youtube videos on the procedure, I've been reading up on the results, and I'm perturbed by the contrasting opinions. Some people say that too much of a bbk will ruin internal parts and etc. Others say that anything less than 72cc isn't worth installing. And while I know there is no true 100cc kit, what cc exactly is the 50mm bore kit?

I need my bike to last, but I also need my bike to go 45mph+ just to reach my bank. Right now 40mph is my top speed at 63cc and I've done all I can in regards to variator weights, clutch springs, performance coil, carb jetting, and all the main necessities so I think it's time to up the engine power.

I've got a Peace Sports 50, 2009 model.


I plan on getting this exhaust http://www.amazon.com/gp/product/B00...d=ABXFT02JRY7L for when I install the bbk, because I've read horror stories that a performance exhaust will ruin a stock engine unless it has enough power to push all the air out of the exhaust.

So which bbk is the right one for me?

Right now the following are in my cart and I'm not sure if any of them are good or which one I should really get:

http://www.amazon.com/Scooter-Bore-7...m+big+bore+kit

http://www.ebay.com/itm/GY6-Scooter-...236435&vxp=mtr

http://www.amazon.com/gp/product/B00...A1NHCW6NW9A2EP

http://www.ebay.com/itm/100cc-Big-Bore-Kit-Cylinder-Head-Piston-Rings-Scooter-139QMB-GY6-Engine-70002-/290910381530?pt=Motorcycles_Parts_Accessories&hash =item43bb9c25da&vxp=mtr

http://www.ebay.com/itm/Gy6-engine-8...1f9673&vxp=mtr



I eventually plan on getting another scooter just because I like toying with these things, would I be able to take my old 63cc piston and bore and install it in a different 49cc 139qmb for a cheap little bbk upgrade?

This thread has helped me in my decision to get a bbk:
http://scootdawg.proboards.com/index...y&thread=21571