i am think about it and want to know the pros and cons and how good do they hold up and what else do i need to change if i get it thanks chad morse

 

i think more kids on www.planetminis.com have done it. it's more for racing applications really, so i don't think any stunters have gone through all that work. 88cc is the largest you can go w/out having to bore your cases, that's why 88 kits are so popular. anything larger and you'd have to disassemble your engine and have the casing bored out to allow the cylinder wall/piston skirt to fit in.
B

 

you can go bigger than 88cc without boring the cases by installing a crank with a longer stroke if i'm not mistaken.

 

you might be right, but either way you'd have to break down your engine to make it work.
B

 

Yes you can add a 52mm stroker crank for a total displacement of 110cc without boring the case. Anything over 88cc is going to be for racing only.....it would be to powerful and twitchy to stunt.

 

whats the bigest you can go and still be able to stunt it i want my 50 fast to so when we run from the cops i am not the one in the back becuse i am the bigest guy out off all the guys that we ride with i want more top speed and all around power so what sould i go with please help money isnt a prob at all

 

then send some this way! and send me your bike too i'll hook it all up. no really if you wanna dump a lotta cash into your fiddy i think silver surfer is the expert, talk to him.
B

 

88, 4 speed and some sprokets

 

u a brave man 5000 grand for one of those

 

88cc
Ported Monster Head
Cam

every performance mod known to man

15tooth front 32 rear

57mph :YEAH

 

thats just sick !!!!....

wheelie it at 55 on the highway in slow lane

 

check out twobrothers.com
124cc dohc for a fiddy sprockets and 4sppeed mannual

 

you'll pay way to much if you shop there

 

i have a friend who fiddy is now 107cc and everyone tells me its soo twitchy that they don't even wanna ride it cuz u just hit the gas in any gear and loop it so i'd just go with an 88 kit